uopz_extend

(PECL uopz 1, PECL uopz 2, PECL uopz 5, PECL uopz 6)

uopz_extend — Extend a class at runtime

说明

uopz_extend ( string $class , string $parent ) : bool

Makes class extend parent

参数

class: The name of the class to extend
parent: The name of the class to inherit

返回值

成功时返回 true，或者在失败时返回 false。

错误／异常

As of PHP 7.4.0, uopz_extends() throws a RuntimeException, if OPcache is enabled, and the class entry of either class or parent (if it is a trait) is immutable.

范例

示例 #1 uopz_extend() example


<?php
class A {}
class B {}

uopz_extend(A::class, B::class);

var_dump(class_parents(A::class));
?>

以上例程会输出：

array(1) {
  ["B"]=>
  string(1) "B"
}