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18 lines
450 B
18 lines
450 B
<?php
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/*
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* 重载：重新写类成员，只有当调用类中没有的成员时才会使用
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*/
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class clsA{
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public $a = 'hello';
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private $b;
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public function __set($key,$val)
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{
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echo "{$key}未定义, val:{$val}".'<br>';
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}
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}
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$obj = new clsA();
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$obj -> a = 'world';
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$obj -> b = 'test'; //b未定义，但b被赋值时，自动调用了__set，自动传入b和test
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?>
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