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1.只存在於class 裡是private的屬性或沒有才會調用這兩個方法
<?php
class A{
private $a;
public function __set($name,$value){
echo "seta";
$this->{$name}=$value;
}
public function __get($name){
echo $this->{$name};
}
}
$a=new A();
$a->a=123;
echo $a->a;
result:
seta123
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