大佬教程收集整理的这篇文章主要介绍了php析构函数行为,大佬教程大佬觉得挺不错的,现在分享给大家,也给大家做个参考。
class test{ public function __construct(){ print "contrucTing<br>"; } public function __destruct(){ print "destroying<br>"; } }
我称之为:
$t = new test;
它打印构造函数消息.但是,我希望当脚本结束并呈现页面时,析构函数应该触发.当然不是.
<?PHP class DestructTestDummy { protected $name; function __construct($Name) { echo "ConstrucTing $name\n"; $this->name = $name; } function __destruct() { echo "DestrucTing $this->name\n"; //exit; } } echo "Start script\n"; register_shutdown_function(function() { echo "Shutdown function\n"; //exit }); $a = new DestructTestDummy("Mr. Unset"); $b = new DestructTestDummy("Terminator 1"); $c = new DestructTestDummy("Terminator 2"); echo "Before unset\n"; unset($a); echo "After unset\n"; echo "Before func\n"; call_user_func(function() { $c = new DestructTestDummy("Mrs. Scopee"); }); echo "After func\n"; $b->__destruct(); exit("ExiTing\n");
在PHP 5.5.12中打印:
Start script ConstrucTing Mr. Unset ConstrucTing Terminator 1 ConstrucTing Terminator 2 Before unset DestrucTing Mr. Unset After unset Before func ConstrucTing Mrs. Scopee DestrucTing Mrs. Scopee After func DestrucTing Terminator 1 ExiTing Shutdown function DestrucTing Terminator 2 DestrucTing Terminator 1
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