更新日志

对绑定的扩展的函数有以下更新。

Version	Function	Description
Since 5.0.0	get_parent_class	The object parameter is optional if called from the object's method.
Since 5.0	cal_info	参数calendar作为可选项，缺省时默认值为"所有历法"。
Since 4.3.0	easter_date	year参数可选，缺省的默认值是当年。
	easter_days	参数year 可选，缺省默认值是当年。
	easter_days	引入参数 method。
Since 4.2.0	srand	seed 成为可选，省略时会默认使用随机值。
Since 4.0.5	get_parent_class	If object is a string, returns the name of the parent class of the class with that name.
prior to 5.3.0	get_object_vars	If the object isn't an object, then get_object_vars would return false
Prior to 5.1.3	imagecolorallocatealpha	Returns -1 if the allocation failed.
prior to 4.2.0	get_object_vars	If the variables declared in the class of which the object is an instance, have not been assigned a value, those will not be returned in the array
PHP 7.0.15, PHP 7.1.1	get_defined_functions	增加 exclude_disabled 参数。
PHP 5.3.2 (PECL OCI8 1.4)	oci_set_prefetch	Before this release, rows must be >= 1.
PHP 5.3 (PECL OCI8 1.3.4)	oci_set_prefetch	Before this release, prefetching was limited to the lesser of rows rows and 1024 * rows bytes. The byte size restriction has now been removed.
PECL 3.0.0	IntlDateFormatter::format	Support for providing IntlCalendar objects to the datetime parameter was added.
Before 5.1.0	get_parent_class	If called without parameter outside object, this function would have returned null with a warning.
8.0.3	bind_textdomain_codeset	codeset is nullable now. Previously, it was not possible to retrieve the currently set encoding.
	bindtextdomain	directory is nullable now. Previously, it was not possible to retrieve the currently set directory.
8.0.0, PECL OCI8 3.0.0	OCICollection::append	The OCI-Collection class was renamed to OCICollection to align with PHP naming standards.
	OCICollection::assign	The OCI-Collection class was renamed to OCICollection to align with PHP naming standards.
	OCICollection::assignElem	The OCI-Collection class was renamed to OCICollection to align with PHP naming standards.
	OCICollection::free	The OCI-Collection class was renamed to OCICollection to align with PHP naming standards.
	OCICollection::getElem	The OCI-Collection class was renamed to OCICollection to align with PHP naming standards.
	OCICollection::max	The OCI-Collection class was renamed to OCICollection to align with PHP naming standards.
	OCICollection::size	The OCI-Collection class was renamed to OCICollection to align with PHP naming standards.
	OCICollection::trim	The OCI-Collection class was renamed to OCICollection to align with PHP naming standards.
	OCILob::append	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::close	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::eof	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::erase	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::export	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::flush	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::free	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::getBuffering	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::import	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::load	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::read	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::rewind	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::save	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::saveFile	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::seek	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::setBuffering	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::size	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::tell	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::truncate	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::write	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::writeTemporary	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
	OCILob::writeToFile	The OCI-Lob class was renamed to OCILob to align with PHP naming standards.
8.0.0	DateTime::format	Prior to this version, false was returned on failure.
	DateTime::format	The format character p has been added.
	DateTime::getOffset	Prior to this version, false was returned on failure.
	DateTime::getTimestamp	These functions no longer return false on failure.
	DOMImplementation::createDocument	doctype is now nullable.
	array_filter	callback 回调现在可以为空（nullable）。
	bcpowmod	scale is now nullable.
	com_event_sink	sink_interface is nullable now.
	com_get_active_object	codepage is nullable now.
	deflate_add	context expects a DeflateContext instance now; previously, a resource was expected.
	deflate_init	On success, this function returns a DeflateContext instance now; previously, a resource was returned.
	enchant_broker_describe	Prior to this version, the function returned false on failure.
	enchant_broker_describe	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_dict_exists	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_free	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_free_dict	dictionary expects a EnchantDictionary now; previoulsy, a 资源(resource) was expected.
	enchant_broker_get_dict_path	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_get_error	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_init	On success, this function returns an EnchantBroker instance now; previoulsy, a 资源(resource) was retured.
	enchant_broker_list_dicts	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_list_dicts	Prior to this version, the function returned false on failure.
	enchant_broker_request_dict	On success, this function returns an EnchantDictionary instance now; previoulsy, a 资源(resource) was retured.
	enchant_broker_request_dict	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_request_pwl_dict	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_request_pwl_dict	On success, this function returns an EnchantDictionary instance now; previoulsy, a 资源(resource) was retured.
	enchant_broker_set_dict_path	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_broker_set_ordering	broker expects an EnchantBroker instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_add	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_add_to_session	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_check	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_describe	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_describe	Prior to this version, the function returned false on failure.
	enchant_dict_get_error	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_is_added	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_quick_check	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_store_replacement	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	enchant_dict_suggest	dictionary expects an EnchantDictionary instance now; previoulsy, a 资源(resource) was expected.
	gmp_binomial	This function no longer returns false on failure.
	gmp_export	This function no longer returns false on failure.
	gmp_import	This function no longer returns false on failure.
	gzgets	length is nullable now; previously, the default was 1024.
	gzwrite	length is nullable now; previously, the default was 0.
	html_entity_decode	encoding is nullable now.
	iconv_strpos	encoding is nullable now.
	iconv_strrpos	encoding is nullable now.
	imagegrabwindow	client_area expects a bool now; previously it expected an int.
	inflate_add	context expects an InflateContext instance now; previously, a resource was expected.
	inflate_get_read_len	context expects an InflateContext instance now; previously, a resource was expected.
	inflate_get_status	context expects an InflateContext instance now; previously, a resource was expected.
	inflate_init	On success, this function returns an InflateContext instance now; previously, a resource was returned.
	ldap_add	controls is nullable now; previously, it defaulted to [].
	ldap_add_ext	controls is nullable now; previously, it defaulted to [].
	ldap_bind_ext	controls is nullable now; previously, it defaulted to [].
	ldap_compare	controls is nullable now; previously, it defaulted to [].
	ldap_delete	controls is nullable now; previously, it defaulted to [].
	ldap_delete_ext	controls is nullable now; previously, it defaulted to [].
	ldap_exop_passwd	controls is nullable now; previously, it defaulted to [].
	ldap_list	controls is nullable now; previously, it defaulted to [].
	ldap_mod_add	controls is nullable now; previously, it defaulted to [].
	ldap_mod_del	controls is nullable now; previously, it defaulted to [].
	ldap_mod_replace	controls is nullable now; previously, it defaulted to [].
	ldap_modify_batch	controls is nullable now; previously, it defaulted to [].
	ldap_mod_add_ext	controls is nullable now; previously, it defaulted to [].
	ldap_mod_del_ext	controls is nullable now; previously, it defaulted to [].
	ldap_mod_replace_ext	controls is nullable now; previously, it defaulted to [].
	ldap_read	controls is nullable now; previously, it defaulted to [].
	ldap_rename	controls is nullable now; previously, it defaulted to [].
	ldap_rename_ext	controls is nullable now; previously, it defaulted to [].
	ldap_sasl_bind	dn, password, mech, realm, authc_id, authz_id and props are nullable now.
	ldap_search	controls is nullable now; previously, it defaulted to [].
	ldap_set_rebind_proc	callback is nullable now.
	libxml_use_internal_errors	use_errors is nullable now. Previously, its default was false.
	mb_chr	现在 encoding 可以为 null。
	mb_convert_kana	现在 encoding 可以为 null。
	mb_encode_numericentity	现在 encoding 可以为 null。
	mb_ereg	This function returns true on success now. Previously, it returned the byte length of the matched string if a match for pattern was found in string and matches was passed. If the optional parameter matches was not passed or the length of the matched string was 0, this function returned 1.
	mb_ereg_match	options is nullable now.
	mb_ereg_replace	options is nullable now.
	mb_ereg_replace_callback	options is nullable now.
	mb_ereg_search	pattern and options are nullable now.
	mb_ereg_search_init	pattern and options are nullable now.
	mb_ereg_search_pos	pattern and options are nullable now.
	mb_ereg_search_regs	pattern and options are nullable now.
	mb_eregi	This function returns true on success now. Previously, it returned the byte length of the matched string if a match for pattern was found in string and matches was passed. If the optional parameter matches was not passed or the length of the matched string was 0, this function returned 1.
	mb_eregi_replace	options is nullable now.
	mb_get_info	参数 type 中的 "func_overload" 和 "func_overload_list" 不再被支持。
	mb_ord	现在 encoding 可以为 null。
	mb_regex_encoding	现在 encoding 可以为 null。
	mb_regex_set_options	If the parameter options is given and not null, the previous options are returned. Formerly, the current options have been returned.
	mb_regex_set_options	options is nullable now.
	mb_scrub	现在 encoding 可以为 null。
	mb_str_split	现在 encoding 可以为 null。
	mb_str_split	This function no longer returns false on failure.
	metaphone	The function returned false on failure.
	mhash	key is now nullable.
	msg_get_queue	On success, this function returns a SysvMessageQueue instance now; previously, a resource was returned.
	msg_receive	queue expects a SysvMessageQueue instance now; previously, a resource was expected.
	msg_remove_queue	queue expects a SysvMessageQueue instance now; previously, a resource was expected.
	msg_send	queue expects a SysvMessageQueue instance now; previously, a resource was expected.
	msg_set_queue	queue expects a SysvMessageQueue instance now; previously, a resource was expected.
	msg_stat_queue	queue expects a SysvMessageQueue instance now; previously, a resource was expected.
	odbc_columns	schema, table and column are now nullable.
	odbc_error	odbc is nullable now.
	odbc_errormsg	odbc is nullable now.
	odbc_exec	flags was removed.
	odbc_fetch_row	row is nullable now.
	odbc_procedurecolumns	Prior to this version, the function could only be called with either one or five arguments.
	odbc_procedures	Prior to this version, the function could only be called with either one or four arguments.
	odbc_tables	schema, table and types are now nullable.
	openssl_pkey_new	成功时此函数会返回 OpenSSLAsymmetricKey 的实例；在之前版本中，则会返回类似为 OpenSSL key 的 资源(resource)。
	openssl_sign	private_key accepts an OpenSSLAsymmetricKey or OpenSSLCertificate instance now; previously, a 资源(resource) of type OpenSSL key or OpenSSL X.509 was accepted.
	openssl_x509_verify	certificate accepts an OpenSSLCertificate instance now; previously, a 资源(resource) of type OpenSSL X.509 was accepted.
	openssl_x509_verify	public_key accepts an OpenSSLAsymmetricKey or OpenSSLCertificate instance now; previously, a 资源(resource) of type OpenSSL key or OpenSSL X.509 was accepted.
	parse_str	result 是必须项。
	sem_acquire	semaphore expects a SysvSemaphore instance now; previously, a resource was expected.
	sem_get	On success, this function returns a SysvSemaphore instance now; previously, a resource was returned.
	sem_get	The type of auto_release has been changed from int to bool.
	sem_release	semaphore expects a SysvSemaphore instance now; previously, a resource was expected.
	sem_remove	semaphore expects a SysvSemaphore instance now; previously, a resource was expected.
	shm_attach	On success, this function returns an SysvSharedMemory instance now; previously, a resource was returned.
	shm_attach	size is nullable now.
	shm_detach	shm expects a SysvSharedMemory instance now; previously, a resource was expected.
	shm_get_var	shm expects a SysvSharedMemory instance now; previously, a resource was expected.
	shm_has_var	shm expects a SysvSharedMemory instance now; previously, a resource was expected.
	shm_put_var	shm expects a SysvSharedMemory instance now; previously, a resource was expected.
	shm_remove	shm expects a SysvSharedMemory instance now; previously, a resource was expected.
	shm_remove_var	shm expects a SysvSharedMemory instance now; previously, a resource was expected.
	shmop_close	shmop expects a Shmop instance now; previously, a resource was expected.
	shmop_delete	shmop expects a Shmop instance now; previously, a resource was expected.
	shmop_open	On success, this function returns an Shmop instance now; previously, a resource was returned.
	shmop_read	shmop expects a Shmop instance now; previously, a resource was expected.
	shmop_size	shmop expects a Shmop instance now; previously, a resource was expected.
	shmop_write	Prior to PHP 8.0.0, false was returned on failure.
	shmop_write	shmop expects a Shmop instance now; previously, a resource was expected.
	socket_accept	On success, this function returns a Socket instance now; previously, a resource was returned.
	socket_addrinfo_bind	address is an AddressInfo instance now; previously, it was a resource.
	socket_addrinfo_bind	On success, this function returns a Socket instance now; previously, a resource was returned.
	socket_addrinfo_connect	On success, this function returns a Socket instance now; previously, a resource was returned.
	socket_addrinfo_connect	address is an AddressInfo instance now; previously, it was a resource.
	socket_addrinfo_explain	address is an AddressInfo instance now; previously, it was a resource.
	socket_addrinfo_lookup	service is nullable now.
	socket_addrinfo_lookup	On success, this function returns a array of AddressInfo instances now; previously, an array of resources was returned.
	socket_connect	port 允许为空。
	socket_connect	socket is a Socket instance now; previously, it was a resource.
	socket_create_listen	On success, this function returns a Socket instance now; previously, a resource was returned.
	socket_create_pair	pair is a reference to an array of Socket instances now; previously, it was a reference to an array of resources.
	socket_export_stream	socket is a Socket instance now; previously, it was a resource.
	socket_get_option	socket is a Socket instance now; previously, it was a resource.
	socket_getpeername	socket is a Socket instance now; previously, it was a resource.
	socket_getsockname	socket is a Socket instance now; previously, it was a resource.
	socket_import_stream	On success, this function returns a Socket instance now; previously, a resource was returned.
	socket_last_error	socket is a Socket instance now; previously, it was a resource.
	socket_last_error	socket is nullable now.
	socket_listen	socket is a Socket instance now; previously, it was a resource.
	socket_read	socket is a Socket instance now; previously, it was a resource.
	socket_recvfrom	socket is a Socket instance now; previously, it was a resource.
	socket_recvmsg	socket is a Socket instance now; previously, it was a resource.
	socket_send	socket is a Socket instance now; previously, it was a resource.
	socket_sendmsg	socket is a Socket instance now; previously, it was a resource.
	socket_sendto	socket is a Socket instance now; previously, it was a resource.
	socket_sendto	port is nullable now.
	socket_set_block	socket is a Socket instance now; previously, it was a resource.
	socket_set_nonblock	socket is a Socket instance now; previously, it was a resource.
	socket_set_option	socket is a Socket instance now; previously, it was a resource.
	socket_shutdown	socket is a Socket instance now; previously, it was a resource.
	socket_write	length is nullable now.
	socket_write	socket is a Socket instance now; previously, it was a resource.
	socket_wsaprotocol_info_export	socket is a Socket instance now; previously, it was a resource.
	socket_wsaprotocol_info_import	On success, this function returns a Socket instance now; previously, a resource was returned.
	soundex	Prior to this version, calling the function with an empty string returned false for no particular reason.
	sprintf	This function no longer returns false on failure.
	ReflectionClass::getReflectionConstants	filter has been added.
	ReflectionParameter::getDefaultValue	This method now allows getting the default value of parameters of built-in functions and built-in class methods. Previously, a ReflectionException was thrown.
	ReflectionParameter::getDefaultValueConstantName	This method now allows getting the default values' constant names of built-in functions and built-in class methods. Previously, a ReflectionException was thrown.
	ReflectionProperty::getValue	object is nullable now.
	ReflectionProperty::isInitialized	object is nullable now.
	SoapClient::__doRequest	The type of oneWay is bool now; formerly it was int.
	SoapClient::__setCookie	value is now nullable.
	SoapServer::handle	request is now nullable.
	tidy::__construct	filename, config, encoding and useIncludePath are nullable now.
	tidy::parseFile	config and encoding are nullable now.
	tidy::parseString	config and encoding are nullable now.
	tidy::repairFile	tidy::repairFile is a static method now.
	tidy::repairFile	config and encoding are nullable now.
	tidy::repairString	tidy::repairString is a static method now.
	tidy::repairString	config and encoding are nullable now.
	tidy::repairString	This function no longer accepts the useIncludePath parameter.
	XMLReader::getAttribute	This function can no longer return false.
	XMLReader::getAttributeNs	This function can no longer return false.
	XMLReader::lookupNamespace	This function can no longer return false.
	XMLReader::next	name is nullable now.
	XMLReader::open	XMLReader::open is now declared as static method, but can still be called on an XMLReader instance.
	XMLReader::XML	XMLReader::XML is now declared as static method, but can still be called on an XMLReader instance.
	XMLWriter::endAttribute	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endCdata	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endComment	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endDocument	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endDtd	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endDtdAttlist	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endDtdElement	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endDtdEntity	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endElement	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::endPi	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::flush	This function can no longer return false.
	XMLWriter::flush	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::fullEndElement	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::openMemory	This function returns now an XMLWriter instance on success. Previouly, a 资源(resource) has been returned in this case.
	XMLWriter::openUri	This function returns now an XMLWriter instance on success. Previouly, a 资源(resource) has been returned in this case.
	XMLWriter::outputMemory	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::setIndent	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::setIndentString	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startAttribute	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startAttributeNs	prefix is nullable now.
	XMLWriter::startAttributeNs	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startCdata	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startComment	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startDocument	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startDtd	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startDtdAttlist	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startDtdElement	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startDtdEntity	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startElement	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startElementNs	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::startPi	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::text	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeAttribute	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeAttributeNs	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeCdata	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeComment	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeDtd	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeDtdAttlist	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeDtdElement	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeDtdEntity	publicId, systemId and notationData are nullable now.
	XMLWriter::writeDtdEntity	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeElement	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeElementNs	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writePi	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
	XMLWriter::writeRaw	现在 writer 需要 XMLWriter 实例， 之前需要的是 resource。
7.4.0	array_merge	允许不带参数调用，之前版本至少需要一个参数。
	array_merge_recursive	允许不传递参数调用，之前的版本中至少需要一个参数。
	get_magic_quotes_gpc	该函数已被废弃。
	gzread	This functions returns false on failure now; previously 0 was returned.
	gzwrite	This functions returns false on failure now; previously 0 was returned.
	hash_algos	支持 crc32c。
	idn_to_ascii	现在 variant 的默认值为 INTL_IDNA_VARIANT_UTS46 ， 而不是已弃用的 INTL_IDNA_VARIANT_2003 。
	idn_to_utf8	现在 variant 的默认值为 INTL_IDNA_VARIANT_UTS46 ， 而不是已弃用的 INTL_IDNA_VARIANT_2003 。
	imagecropauto	The behavior of imagecropauto() in the bundled libgd has been synced with that of system libgd: IMG_CROP_DEFAULT no longer falls back to IMG_CROP_SIDES and threshold-cropping now uses the same algorithm as system libgd.
	imagecropauto	The default value of mode has been changed to IMG_CROP_AUTO. Formerly, the default value has been -1 which corresponds to IMG_CROP_DEFAULT, but passing -1 is now deprecated.
	implode	把参数 glue 放到 pieces 的后面已被废弃（就是不按文档中的顺序传递参数）。
	ldap_control_paged_result	This function has been deprecated.
	ldap_control_paged_result_response	This function has been deprecated.
	password_hash	现在 algo 参数可支持 string 类型，但为了向后兼容也支持 int 类型。
	password_needs_rehash	现在 algo 参数可以支持 string 类型，但为了向后兼容性，同时支持 int 类型。
	preg_replace_callback	新增 flags 参数。
	preg_replace_callback_array	The flags parameter was added.
	SQLite3Stmt::bindParam	param now also supports the @param notation.
	SQLite3Stmt::bindValue	param now also supports the @param notation.
7.3.24, 7.4.12	tidyNode::isHtml	This function has been fixed to have reasonable behavior. Previously, almost any node was reported as being an HTML node.
7.3.14, 7.4.2	dba_open	The lmdb driver now supports an additional $mapsize parameter.
7.3.0	apache_request_headers	此函数可用于 FPM SAPI 模式。
	array_push	可以只用一个参数来调用此函数，之前版本中至少需要两个参数。
	array_unshift	现在可以只用一个参数来调用，之前至少需要两个参数。
	compact	现在，如果字符串指向的变量未定义，compact 会产生 E_NOTICE 级错误。 在此之前，此类问题会静默忽略掉。
	define	废弃了 case_insensitive，并将在 8.0.0 版中移除。
	ftp_nb_fget	参数 mode 变为可选参数。 在之前的版本中，这是一个必填参数。
	ftp_nb_fput	参数 mode 变为可选参数。 在之前的版本中，这是一个必填参数。
	ftp_nb_get	mode 参数变为可选，之前是强制性的。
	ftp_nb_put	mode 参数为可选，之前版本中为必填。
	ftp_put	mode 参数为可选，之前版本中为必选。
	is_countable	is_countable has been added.
	json_decode	JSON_THROW_ON_ERROR options was added.
	json_encode	options 参数新增 JSON_THROW_ON_ERROR 常量。
	list	支持在数组解构时传引用。
	password_hash	增加 PASSWORD_ARGON2ID，支持 Argon2id 密码算法。
	preg_quote	字符 # 被增加为需要转义的。
	session_set_cookie_params	增加 options 参数， 可以通过传入一个关联数组对各个选项进行设置。 同时，通过使用这个参数还可以对 SameSite cookie 进行设置。
	setcookie	An alternative signature supporting an options array has been added. This signature supports also setting of the SameSite cookie attribute.
	unlink	现在 Windows 也可以用 unlink 删除文件句柄还在使用中的文件了，在此之前是无法删除的。 然而，还是无法重新创建文件，需要等到所有句柄都关闭才可以。
	var_export	Now exports stdClass objects as an array cast to an object ((object) array( ... )), rather than using the nonexistent method stdClass::__setState. The practical effect is that now stdClass is exportable, and the resulting code will even work on earlier versions of PHP.
7.3	ldap_add	Support for controls added
	ldap_compare	Support for controls added
	ldap_delete	Support for controls added
	ldap_exop	Support for serverctrls added
	ldap_exop_passwd	Support for controls added
	ldap_list	Support for controls added
	ldap_mod_add	Support for controls added
	ldap_mod_del	Support for controls added
	ldap_mod_replace	Support for controls added
	ldap_modify_batch	Support for controls added
	ldap_mod_add_ext	Support for controls added
	ldap_mod_del_ext	Support for controls added
	ldap_mod_replace_ext	Support for controls added
	ldap_parse_result	Support for controls added
	ldap_read	Support for controls added
	ldap_rename	Support for controls added
	ldap_rename_ext	Support for controls added
	ldap_search	Support for controls added
7.2.19, 7.3.6, 7.4.0	DatePeriod::__construct	recurrences must be greater than 0 now.
7.2.18, 7.3.5	substr_compare	offset 现在可能等于 main_str。
7.2.0	count	当无效的 countable 类型传递给 array_or_countable 参数时，count 会产生警告。
	date_parse	返回数组的 zone 键现在代表秒，而不是分钟。 并且正负符号已反转，例如：之前是 -120 现在是 7200。
	date_parse_from_format	The zone element of the returned array represents seconds instead of minutes now, and its sign is inverted. For instance -120 is now 7200.
	gettype	现在，已关闭的资源报告为 'resource (closed)'。 此前，已关闭的资源报告为 'unknown type'。
	hash_copy	接受的参数以及返回值从资源类型修改为 HashContext 对象类型。
	hash_final	接收参数从资源类型修改为 HashContext 对象类型。
	hash_hmac	不再支持非加密的哈希函数（adler32，crc32，crc32b，fnv132，fnv1a32，fnv164，fnv1a64，joaat）。
	hash_hmac_file	不再支持非加密的哈希函数（adler32，crc32，crc32b，fnv132，fnv1a32，fnv164，fnv1a64，joaat）。
	hash_init	返回 HashContext 对象，不再返回资源类型。
	hash_init	当使用 HASH_HMAC 选项的时候，不再支持非加密的哈希函数（adler32，crc32，crc32b，fnv132，fnv1a32，fnv164，fnv1a64，joaat）。
	hash_pbkdf2	不再支持非加密的哈希函数（adler32，crc32，crc32b，fnv132，fnv1a32，fnv164，fnv1a64，joaat）。
	hash_update	接收参数从资源类型修改为 HashContext 对象类型。
	hash_update_file	接收参数从资源类型修改为 HashContext 对象类型。
	hash_update_stream	接收参数从资源类型修改为 HashContext 对象类型。
	idn_to_ascii	INTL_IDNA_VARIANT_2003 已被弃用； 可以使用 INTL_IDNA_VARIANT_UTS46 代替。
	idn_to_utf8	INTL_IDNA_VARIANT_2003 已被弃用； 可以使用 INTL_IDNA_VARIANT_UTS46 代替。
	json_decode	JSON_INVALID_UTF8_IGNORE, and JSON_INVALID_UTF8_SUBSTITUTE options were added.
	json_encode	options 参数新增 JSON_INVALID_UTF8_IGNORE 和 JSON_INVALID_UTF8_SUBSTITUTE 常量。
	mail	现在 additional_headers 参数开始支持 array。
	number_format	number_format 现在无法返回 -0，之前可能返回 -0，因为 number 可能会是 -0.01。
	openssl_pkcs7_verify	新增 p7bfilename 参数。
	pack	float 和 double 类型支持打断和小端。
	parse_str	不带第二个参数的情况下使用 parse_str 会产生 E_DEPRECATED 警告。
	password_hash	增加 PASSWORD_ARGON2I，支持 Argon2i 密码算法。
	preg_match	现在 $flags 参数支持 PREG_UNMATCHED_AS_NULL。
	preg_match_all	现在 $flags 参数可以支持 PREG_UNMATCHED_AS_NULL。
	proc_nice	在 Windows 平台上可用。
	session_abort	The return type of this function is bool now. Formerly, it has been void.
	session_module_name	不允许设置模块名称为 "user"。 在之前的版本中，如果设置为 "user"，那么会被静默的忽略到。
	session_name	session_name 函数会检查会话状态， 之前的版本仅仅检查 cookie 状态。 所以，旧版本的 PHP 允许你在调用 session_start 函数之后再调用 session_name 函数， 新版本的 PHP 不再允许这样做了。
	session_reset	The return type of this function is bool now. Formerly, it has been void.
	session_set_cookie_params	成功时返回 true， 或者在失败时返回 false。 之前版本中是返回 void 的。
	session_write_close	The return type of this function is bool now. Formerly, it has been void.
	unpack	float and double types supports both Big Endian and Little Endian.
	SQLite3::openBlob	The flags parameter has been added, allowing to write BLOBs; formerly only reading was supported.
7.1.5	IntlDateFormatter::format	Support for providing general DateTimeInterface objects to the datetime parameter was added. Formerly, only proper DateTime objects were supported.
7.1.4	PDO::sqliteCreateFunction	The flags parameter has been added.
	SQLite3::createFunction	The flags parameter has been added.
7.1.0	DateInterval::format	The F and f format characters were added.
	DateTime::setTime	新增 microsecond 参数。
	array_rand	内部随机化算法已从 libc rand 函数更改为使用 梅森旋转算法（Mersenne Twister） 随机数生成器。
	getenv	现在可以省略 varname 来检索所有环境变量的关联数组 array。
	getopt	添加 rest_index 参数。
	grapheme_extract	Support for negative offsets has been added.
	grapheme_stripos	Support for negative offsets has been added.
	grapheme_strpos	Support for negative offsets has been added.
	hash_algos	加入 sha512/224，sha512/256，sha3-224，sha3-256，sha3-384 以及 sha3-512 算法的支持。
	iconv_strpos	Support for negative offsets has been added.
	json_decode	An empty JSON key ("") can be encoded to the empty object property instead of using a key with value _empty_.
	json_encode	对 Double 的值进行编码时，使用 serialize_precision 代替 precision。
	json_encode	options 参数新增 JSON_UNESCAPED_LINE_TERMINATORS 常量。
	list	现在可以指定 list 中的键。 这就可以解构非数字键或者无顺序的数组。
	long2ip	参数 proper_address 的类型从 string 改成 integer。
	mb_ereg	mb_ereg will now set matches to an empty array, if nothing matched. Formerly, matches was not modified in that case.
	mb_ereg_replace	The e modifier has been deprecated.
	mb_ereg_replace	The function checks whether string is valid for the current encoding.
	mb_ereg_replace_callback	The function checks whether string is valid for the current encoding.
	mb_ereg_search_setpos	Support for negative offsets has been added.
	mb_eregi	mb_eregi will now set matches to an empty array, if nothing matched. Formerly, matches was not modified in that case.
	mb_eregi_replace	The e modifier has been deprecated.
	mb_eregi_replace	The function checks whether string is valid for the current encoding.
	mb_strimwidth	支持负数的 start 和 width。
	mb_stripos	支持 offset 使用负数。
	mb_strpos	支持负数的 offset。
	openssl_decrypt	添加了 tag 和 aad 参数。
	openssl_encrypt	增加了 tag、aad、tag_length 参数
	openssl_pkey_new	添加了 curve_name 配置参数使得可以创建 EC 密钥。
	session_start	当 session_start 执行失败， 无法开始一个会话的时候，会返回 false， 并且不会初始化超级变量 $_SESSION。
	shuffle	内置的随机数产生算法从 libc rand 函数改成 梅森旋转伪随机数生成算法。
	str_shuffle	内置的随机算法从 libc rand 函数改成了梅森旋转演伪随机数发生算法。
	stripos	开始支持负数的 offset。
	strpos	开始支持负数的 offset。
	substr_count	开始支持负数的 offset 和 length。
	unpack	The optional offset has been added.
	ReflectionType::__toString	ReflectionType::__toString has been deprecated.
	SessionHandler::gc	Prior to this version, the function returned true on success.
	SessionHandlerInterface::gc	Prior to this version, the function returned true on success.
7.1	DateTime::__construct	微秒部分不再是 '00000' 了，而是真实的微秒数据。
7.0.15,7.1.1	pack	添加了 “e”,“E”,“g” 和 “G” 代码以启用 float 和 double 的字节顺序支持。
7.0.11	iconv_substr	如果 str 等长于 offset 个字符， 将返回空字符串。之前的版本里，这种情况是会返回 false 的。
7.0.10	SQLite3::__construct	The filename can now be empty to use a private, temporary on-disk database.
7.0.7	curl_setopt	引入 CURL_HTTP_VERSION_2、 CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE、 CURL_HTTP_VERSION_2TLS、 CURL_REDIR_POST_301、 CURL_REDIR_POST_302、 CURL_REDIR_POST_303、 CURL_REDIR_POST_ALL、 CURL_VERSION_KERBEROS5、 CURL_VERSION_PSL、 CURL_VERSION_UNIX_SOCKETS、 CURLAUTH_NEGOTIATE、 CURLAUTH_NTLM_WB、 CURLFTP_CREATE_DIR、 CURLFTP_CREATE_DIR_NONE、 CURLFTP_CREATE_DIR_RETRY、 CURLHEADER_SEPARATE、 CURLHEADER_UNIFIED、 CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE、 CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE、 CURLMOPT_MAX_HOST_CONNECTIONS、 CURLMOPT_MAX_PIPELINE_LENGTH、 CURLMOPT_MAX_TOTAL_CONNECTIONS、 CURLOPT_CONNECT_TO、 CURLOPT_DEFAULT_PROTOCOL、 CURLOPT_DNS_INTERFACE、 CURLOPT_DNS_LOCAL_IP4、 CURLOPT_DNS_LOCAL_IP6、 CURLOPT_EXPECT_100_TIMEOUT_MS、 CURLOPT_HEADEROPT、 CURLOPT_LOGIN_OPTIONS、 CURLOPT_PATH_AS_IS、 CURLOPT_PINNEDPUBLICKEY、 CURLOPT_PIPEWAIT、 CURLOPT_PROXY_SERVICE_NAME、 CURLOPT_PROXYHEADER、 CURLOPT_SASL_IR、 CURLOPT_SERVICE_NAME、 CURLOPT_SSL_ENABLE_ALPN、 CURLOPT_SSL_ENABLE_NPN、 CURLOPT_SSL_FALSESTART、 CURLOPT_SSL_VERIFYSTATUS、 CURLOPT_STREAM_WEIGHT、 CURLOPT_TCP_FASTOPEN、 CURLOPT_TFTP_NO_OPTIONS、 CURLOPT_UNIX_SOCKET_PATH、 CURLOPT_XOAUTH2_BEARER、 CURLPROTO_SMB、 CURLPROTO_SMBS、 CURLPROXY_HTTP_1_0、 CURLSSH_AUTH_AGENT 和 CURLSSLOPT_NO_REVOKE。
7.0.0	array_column	input 参数现在可以是包含对象的数组。
	assert	assert is now a language construct and not a function. assertion can now be an expression. The second parameter is now interpreted either as an exception (if a Throwable object is given), or as the description supported from PHP 5.4.8 onwards.
	current	array 参数始终通过赋值来传递。之前的版本中，默认通过引用来传值。
	define	允许 array 的值。
	dirname	添加可选的 levels 参数。
	getrusage	此函数现在开始支持 Windows。
	json_decode	An empty PHP string or value that after casting to string is an empty string (NULL, FALSE) results in JSON syntax error.
	json_decode	Rejected RFC 7159 incompatible number formats - top level (07, 0xff, .1, -.1) and all levels ([1.], [1.e1])
	key	array 现在总是会传值。 在此之前，它会尽可能传引用，否则就传值。
	list	字符串无法再被拆包（unpack）。
	list	赋值操作的顺序发生了变化。
	list	list 表达式不再可以完全为空。
	mktime	is_dst参数已经被移除。
	openssl_open	添加了 iv 参数
	openssl_seal	添加 iv 变量。
	session_set_save_handler	新增可选参数 validate_sid 和 update_timestamp。
	session_start	新加 options 参数。
	substr	如果 string 的字符串长度与 start 相同时将返回一个空字符串。在之前的版本中，这种情况将返回 false 。
5.6.5	crypt	When the failure string "*0" is given as the salt, "*1" will now be returned for consistency with other crypt implementations. Prior to this version, PHP 5.6 would incorrectly return a DES hash.
5.6.3	pack	添加了 “q”、“q”、“J” 和 “P” 代码以支持处理 64 位数字。
5.6.0	array_fill	count 现在可以是零。 之前 count 必须大于零。
	array_filter	添加可选的 mode 标志和常量（ ARRAY_FILTER_USE_KEY 和 ARRAY_FILTER_USE_BOTH ）
	crypt	Raise E_NOTICE security warning if salt is omitted.
	htmlentities	The default value for the encoding parameter was changed to be the value of the default_charset configuration option.
	htmlspecialchars	The default value for the encoding parameter was changed to be the value of the default_charset configuration option.
	json_decode	Invalid non-lowercased variants of the true, false and null literals are no longer accepted as valid input, and will generate warnings.
	mb_regex_encoding	Default encoding is changed to UTF-8. It was EUC-JP Previously.
	mcrypt_create_iv	source 参数的默认值是 MCRYPT_DEV_URANDOM。
	mcrypt_decrypt	不再接受无效长度的 key and iv 参数。 如果参数长度无效，则 mcrypt_decrypt 函数会产生警告并且返回 false。 之前版本中，对于长度不足的密钥和初始向量会在其后补齐 '\0' 使其达到有效长度。
	mcrypt_encrypt	不再接受无效长度的 key and iv 参数。 如果参数长度无效，则 mcrypt_decrypt 函数会产生警告并且返回 false。 之前版本中，对于长度不足的密钥和初始向量会在其后补齐 '\0' 使其达到有效长度。
	ReflectionClass::newInstanceWithoutConstructor	All internal classes can now be instantiated except for those declared final.
5.5.38, 5.6.24, 7.0.9	getenv	添加 local_only 参数。
5.5.21	crypt	When the failure string "*0" is given as the salt, "*1" will now be returned for consistency with other crypt implementations. Prior to this version, PHP 5.5 (and earlier branches) would incorrectly return a DES hash.
5.5.7	getallheaders	此函数可用于 CLI server。
5.5.1	hex2bin	如果输入的字符串是无效的十六进制字符串则抛出一个警告，
	session_set_save_handler	新增可选参数 create_sid。
5.5.0/PECL 3.0.0	IntlDateFormatter::create	An IntlCalendar object is allowed for calendar. Objects of type IntlTimeZone and DateTimeZone are allowed for timezone. Invalid timezone identifiers (including empty strings) are no longer allowed for timezone. If null is given for timezone, the timezone identifier given by date_default_timezone_get will be used instead of ICUʼs default.
	IntlDateFormatter::setCalendar	It became possible to pass an IntlCalendar object.
5.5.0	empty	empty 现在支持表达式了，而不仅仅是变量。
	ip2long	Prior to this version, on Windows ip2long would sometimes return a valid number even if passed a value which was not an (IPv4) Internet Protocol dotted address.
		此函数会生成一个 E_DEPRECATED 错误。
		mysql_list_dbs 函数已废弃，调用时会抛出 E_DEPRECATED 级别的错误。
		函数会抛出一个 E_DEPRECATED 错误。
		mysql_tablename 函数已废弃，调用时会抛出 E_DEPRECATED 级别的错误。
	pack	“Z” 代码添加了与 “a” 等效的功能，以实现 Perl 兼容性。
	setrawcookie	发送给客户端的 Set-Cookie 头现在会加上 Max-Age 属性。
5.4.43, 5.5.27, 5.6.11	escapeshellcmd	感叹号会被空格所替换。
5.4.32, 5.5.16	ucwords	增加了 delimiters 参数。
5.4.8	assert	增加了参数 description。 description 现在也作为第四个参数提供给 ASSERT_CALLBACK 模式里的回调函数。
	mb_strcut	Passing NULL as length extracts all bytes to the end of the string. Prior to this version NULL was treated the same as 0.
	mb_substr	length 传入 NULL，则从 start 提取到字符串的结尾处。 在之前的版本里， NULL 会被当作 0 来处理。
5.4.7	parse_url	修复了 host 在 协议 省略时的识别。
5.4.4	hex2bin	如果输入的字符串有多余将抛出异常。 PHP 5.4.0 起字符串将被静默地接受，但是最后的字节会被截断。
5.4.0	array_combine	（修复）早期版本中如果是空数组就报E_WARNING的错并且返回false。
	array_multisort	array1_sort_flags 增加 SORT_NATURAL 和 SORT_FLAG_CASE 选项。
	date_default_timezone_get	不再使用 TZ 来推测时区。
	date_default_timezone_get	不再根据操作系统的信息来推测时区，因为这是不可靠的。
	dns_get_record	增加了参数raw。
	empty	检查非数字的字符串偏移量会返回 true.
	filter_input_array	添加 add_empty 参数.
	filter_var_array	添加 add_empty 参数。
	get_html_translation_table	The constants ENT_HTML401, ENT_XML1, ENT_XHTML and ENT_HTML5 were added.
	get_html_translation_table	The default value for the encoding parameter was changed to UTF-8.
	get_magic_quotes_runtime	总是返回 false，因为魔术引号（magic quotes）功能已经从 PHP 中移除。
	getallheaders	此函数可用于 FastCGI。 此前仅在PHP以 Apache 模块方式运行时支持。
	htmlentities	encoding 参数的默认值改成 UTF-8。
	htmlentities	增加常量 ENT_SUBSTITUTE、 ENT_DISALLOWED、 ENT_HTML401、 ENT_XML1、 ENT_XHTML、 ENT_HTML5。
	htmlspecialchars	encoding 参数的默认值改成 UTF-8。
	htmlspecialchars	增加常量 ENT_SUBSTITUTE、 ENT_DISALLOWED、 ENT_HTML401、 ENT_XML1、 ENT_XHTML、 ENT_HTML5。
	htmlspecialchars_decode	增加了 ENT_HTML401、ENT_XML1、 ENT_XHTML 和 ENT_HTML5 等常量。
	http_build_query	加入了 enc_type 参数。
	iconv	这个版本起，字符非法时候会返回 false，除非在输出字符里指定了 //IGNORE 。 在之前版本，它会返回一部分字符串。
	imagewebp	支持把 resource 流作为 to 参数传入。
	isset	检查字符的非数字偏移量将会返回 false。
	json_decode	JSON_BIGINT_AS_STRING, and JSON_OBJECT_AS_ARRAY options were added.
	json_decode	The options parameter was added.
	number_format	This function now supports multiple bytes in dec_point and thousands_sep. Only the first byte of each separator was used in older versions.
	openssl_decrypt	将 raw_output 更改至 options。
	openssl_encrypt	raw_output 改到 options。
	scandir	sorting_order now accepts constants. Any nonzero value caused descending order in previous versions.
	session_set_save_handler	新增用来实现自定义会话处理器的接口 SessionHandlerInterface； 新增 PHP 内部会话处理器类：SessionHandler。
5.3.9	DateTime::createFromFormat	新增 format 格式字符串中对于 + 格式字符的支持。
5.3.7	crypt	Added $2x$ and $2y$ Blowfish modes to deal with potential high-bit attacks.
5.3.6	array_product	空数组现在会产生 1，而之前此函数处理空数组会产生 0。
5.3.4	get_html_translation_table	The encoding parameter was added.
	rawurlencode	因为 rawurlencode 使用了 EBCDIC，所以波浪线字符不会再被编码。
	strip_tags	strip_tags ignores self-closing XHTML tags in allowable_tags.
5.3.3	openssl_decrypt	添加 iv 参数。
	openssl_encrypt	增加 iv 参数。
	parse_url	在 URL 解析失败时将不会产生 E_WARNING 级别的错误。
5.3.2	crypt	基于 Ulrich Drepper 的实现，新增基于 SHA-256 算法和 SHA-512 算法的 crypt。
	crypt	修正了 Blowfish 算法由于非法循环导致的问题，返回“失败”字符串（“*0” 或 “*1”）而不是转而使用 DES 算法。
	flock	在文件资源句柄关闭时不再自动解锁。现在要解锁必须手动进行。
5.3.1	get_defined_constants	仅作用于 Windows：内核常量归类到 Core，之前是 mhash。
5.3.0 起	get_class	object 默认参数现在是 null ，所以，现在传入 null 到 object 参数时，和没传参数的结果一样。
5.3.0	DateTime::__construct	如果 time 参数不是一个有效的 日期/时间格式， 会抛出异常。 在之前的版本中是会发出一个错误。
	DateTimeZone::listIdentifiers	添加可选的 what 和 country 参数。
	acosh	This function is now available on all platforms
	array_multisort	array1_sort_flags 增加选项 SORT_LOCALE_STRING。
	array_search	As with all internal PHP functions as of 5.3.0, array_search returns null if invalid parameters are passed to it.
	asinh	此函数在所有平台上均可用
	atanh	此函数在所有平台上都可以用了
	call_user_func	对面向对象里面的关键字的解析有所增强。在此之前，使用两个冒号来连接一个类和里面的一个方法，把它作为参数来作为回调函数的话，将会发出一个E_STRICT的警告，因为这个传入的参数被视为静态方法。
	call_user_func_array	对面向对象里面的关键字的解析有所增强。在此之前，使用两个冒号来连接一个类和里面的一个方法，把它作为参数来作为回调函数的话，将会发出一个E_STRICT的警告，因为这个传入的参数被视为静态方法。
	checkdnsrr	这个函数在Windows平台上也可以使用了。
	clearstatcache	增加了可选的 clear_realpath_cache 和 filename 参数.
	crypt	PHP 现在包含了它自己的 MD5 Crypt 实现，包括标准 DES 算法，扩展的 DES 算法以及 Blowfish 算法。如果系统缺乏相应的实现，那么 PHP 将使用它自己的实现。
	date_default_timezone_set	现在会抛出 E_WARNING 而不是 E_STRICT。
	dns_get_record	可以是在windows平台上使用这个函数了。
	dns_get_record	在此版本之前，如果给参数authns传入值，则必须同时传入addtl的值。
	expm1	此函数在所有平台上均可用
	fgetcsv	增加了 escape 参数。
	fnmatch	此函数开始在 Windows 平台上生效。
	func_get_arg	If this function is called from the outermost scope of a file which has been included by calling include or require from within a function in the calling file, it now generates a warning and returns false. （不知道如何翻译跟好，直接参考例2即可明白）
	func_get_arg	该函数可以在参数列表中使用。
	func_get_args	该函数可以在参数列表中使用。
	func_get_args	If this function is called from the outermost scope of a file which has been included by calling include or require from within a function in the calling file, it now generates a warning and returns false. （不知道如何翻译跟好，直接参考例2即可明白）
	func_num_args	This function can now be used in parameter lists.
	func_num_args	If this function is called from the outermost scope of a file which has been included by calling include or require from within a function in the calling file, it now generates a warning and returns -1.
	get_cfg_var	get_cfg_var 被修复，能够返回 "array" 的 ini 选项。
	get_defined_constants	内核常量归类为 Core，之前是 internal。在 Windows 上，内核常量归类到 mhash。
	get_object_vars	This function now returns NULL if the object isn't an object.
	getimagesize	Added icon support.
	getmxrr	Windows 平台上也能用这个函数了。
	htmlentities	增加常量 ENT_IGNORE。
	htmlspecialchars	增加常量 ENT_IGNORE。
	imagecolorclosesthwb	在 Windows 平台上可用
	imagefilter	Pixelation support (IMG_FILTER_PIXELATE) was added.
	ini_get	当配置项不存在，之前会返回空字符串，现在会返回 false。
	ini_get_all	增加参数 details。
	json_decode	Added the optional depth. The default recursion depth was increased from 128 to 512
	link	该功能在 Windows 平台下开始有效（Vista、 Server 2008 或更高版本）。
	linkinfo	Windows 平台上开始可用（Vista、Server 2008 或更高版本）。
	log1p	此函数在所有平台上均可用
	mcrypt_create_iv	不再需要提前调用 srand 函数， 由本函数自动完成调用。
	mcrypt_create_iv	MCRYPT_DEV_RANDOM 和 MCRYPT_DEV_URANDOM 在 Windows 平台也可用了。
	mktime	mktime now throws E_DEPRECATED notice if the is_dst parameter is used.
	nl2br	新增可选的 is_xhtml 参数。在此之前，总是插入 '<br />'。
	openssl_open	添加了 method 参数
	openssl_seal	添加 method 变量。
	property_exists	This function checks the existence of a property independent of accessibility.
	rawurlencode	现在符合了RFC 3986。
	readlink	此函数在 Windows 平台下可用（Vista、Server 2008 或更高版本）。
	register_tick_function	Ticks are now supported on threaded web server modules.
	round	引入了 mode 参数
	session_start	如果函数调用失败返回 false， 之前版本返回了 true。
	setlocale	This function now throws an E_DEPRECATED notice if a string is passed to the category parameter instead of one of the LC_* constants.
	stream_context_create	增加了可选参数 params 。
	stream_socket_pair	这个函数在windows平台不可用
	stristr	新增可选的 before_needle 参数。
	strlen	Prior versions treated arrays as the string Array, thus returning a string length of 5 and emitting an E_NOTICE level error.
	strstr	新增可选的 before_needle 参数。
	symlink	此函数在 Windows 平台上可用（Vista、Server 2008 或更高版本）。
	time_nanosleep	至此之后该函数在Windows平台下可用。
	time_sleep_until	自此，函数在Windows平台可用。
5.2.11	get_defined_constants	categorize 参数现在可以合适得被处理。 在此之前，categorize 被解释为 !is_null($categorize)，导致任何非 null 的值会强制常量分类。
5.2.10	array_unique	修改回 sort_flags 的默认值为 SORT_STRING。
	ip2long	再此之前的版本, ip2long 有时会返回即使这不是一个IPV4的标准地址的数字地址。
	natsort	用零填充的数字字符串 (例如 '00005')现在本质上会忽略掉填充的前道零。
5.2.9	array_unique	增加可选选项sort_flags，默认值 SORT_REGULAR。 5.2.9 之前，此函数内部使用 SORT_STRING 排序。
5.2.7	round	round 的内部运作修改符合 C99 的标准。
5.2.6	fopen	增加了选项 'c' 和 'c+'
5.2.5	addcslashes	The escape sequences \v and \f were added.
	imagefilter	Alpha support for IMG_FILTER_COLORIZE was added.
5.2.4	checkdnsrr	增加了TXT的记录类型。
	stream_wrapper_register	添加 flags 参数.
5.2.3	getimagesize	Read errors generated by this function downgraded to E_NOTICE from E_WARNING.
	htmlentities	增加参数 double_encode。
	htmlspecialchars	增加参数 double_encode。
	json_decode	The nesting limit was increased from 20 to 128
	PDOStatement::getColumnMeta	table 字段
5.2.2 - 5.2.6	substr	If the start parameter indicates the position of a negative truncation or beyond, false is returned. Other versions get the string from start.
5.2.2	ftp_ssl_connect	以前版本中，如果无法使用 SSL 连接，将会返回一个非 SSL 的连接， 在 5.2.2 版本中修改为返回 false
	phpinfo	增加了“已加载的配置文件”信息，之前只存在“配置文件路径(php.ini)"。
	proc_terminate	之前的版本被用来销毁进程 resource。
	token_get_all	Line numbers are returned in element 2
5.2.1	json_decode	Added support for JSON decoding of basic types.
	memory_get_peak_usage	使用此函数无需在编译时加上 --enable-memory-limit 选项。
	memory_get_usage	不需要在编译时使用 --enable-memory-limit 选项就能够使用这个函数。
	mt_srand	The Mersenne Twister implementation in PHP now uses a new seeding algorithm by Richard Wagner. Identical seeds no longer produce the same sequence of values they did in previous versions. This behavior is not expected to change again, but it is considered unsafe to rely upon it nonetheless.
	proc_open	为 other_options 参数增加 bypass_shell 选项。
5.2.0	base64_decode	增加了 strict 。
	curl_multi_info_read	msgs_in_queue被加入。
	imagettftext	It is now possible to specify an hexadecimal entity in text.
	mb_strrpos	增加了可选参数 offset。
	memory_get_peak_usage	添加参数 real_usage。
	memory_get_usage	增加了参数 real_usage。
	openssl_verify	添加了 signature_alg 参数。
	pathinfo	添加了常量 PATHINFO_FILENAME。
	session_get_cookie_params	在返回数组中加入 “httponly”。
	session_set_cookie_params	加入 httponly 参数。
	setrawcookie	增加了 httponly 参数。
	PDOStatement::execute	input_parameters 中的键名必须和 SQL 中声明的相匹配。PHP 5.2.0 之前默认忽略。
5.1.3	curl_getinfo	引入CURLINFO_HEADER_OUT.
	get_headers	自 PHP 5.1.3 起本函数使用默认的流上下文，其可以用 stream_context_get_default 函数设定和修改。
	http_build_query	方括号也会被转义。
5.1.2	date_default_timezone_set	本版本开始验证 timezone_identifier 参数。
	http_build_query	加入了参数 arg_separator。
	parse_url	增加了参数 component。
5.1.1	date	format 参数标准的可用日期/时间格式常量见： 常量
5.1.0	ctype_digit	在 PHP 5.1.0 之前，当 text 是一个空字符串的时候，该函数将返回 true 。
	date	时间戳的有效取值范围为 GMT 时间的 1901 年 12 月 13 日至 GMT 时间的 2038 年 1 月 19 日。 （32 位有符号整数的取值范围）。 但是，在 PHP 5.1.0 之前的版本，在某些系统（例如 Windows）上有效取值范围为 1970 年 1 月 1 日至 2038 年 1 月 19 日。
	date	现在发布 E_STRICT 和 E_NOTICE 时区错误。
	date_sunrise	现在发布 E_STRICT 和 E_NOTICE 时区错误。
	date_sunset	现在发布 E_STRICT 和 E_NOTICE 时区错误。
	explode	支持负数的 limit
	file_get_contents	Added the offset and maxlen parameters.
	file_put_contents	添加了对 LOCK_EX 的支持和 data 参数处理 stream 资源的功能。
	gettimeofday	增加了参数 return_float。
	imagerotate	新增： ignore_transparent 。
	localtime	现在发布 E_STRICT 和 E_NOTICE 时区错误。
	mktime	is_dst 参数被废弃。出错时函数返回 false 而不再是 -1。修正了本函数可以接受年月日参数全为零。
	mktime	When called with no arguments, mktime throws E_STRICT notice. Use the time function instead.
	mktime	现在发布 E_STRICT 和 E_NOTICE 时区错误。
	stream_get_contents	增加参数 offset 。
	strftime	现在发布 E_STRICT 和 E_NOTICE 时区错误。
5.0.0	apache_get_modules	可用于Apache 1或PHP Apache 2 filter API。 在此之前, 只可用于 Apache 2 handler API。
	apache_get_version	可用于 Apache 2 filter API.
	checkdnsrr	增加了AAAA的记录类型。
	fgetss	参数 length 从 此开始可选。
	file_get_contents	Added context support.
	file_put_contents	Added context support
	is_executable	is_executable 开始可用以于 Windows。
	jdtojewish	增加了参数 fl。
	opendir	path 支持 ftp:// URL wrapper
	socket_create	增加 AF_INET6 支持。
	strip_tags	strip_tags 变为二进制安全的。
	strrpos	引入 offset 参数。
	strrpos	参数 needle 可以是一个多字符的字符串。