Apr
10
2012
php中类的构造方法和析构方法
//__construct 构造方法，当一个对象创建时调用此方法
//__destruct 析构方法，PHP将在对象被销毁前（即从内存中清除前）调用这个方法
<?php
class MyClass {
public $Name;
public $Job;
public $Like;
function __construct($Name, $Job, $Like) { //__construct 构造方法，当一个对象创建时调用此方法
$this->Name = $Name;
$this->Job = $Job;
$this->Like = $Like;
}
public function info() {
if ($this->Name == 'xiaoming') {
$rs = 'Today is ' . $this->ToDay () . '<br/>';
$rs .= "My name is {$this->Name} <br/>";
$rs .= 'My job is ' . $this->Job . '<br/>';
$rs .= $this->Like;
return $rs;
}
return 'Error';
}
private function ToDay() {
return date ( 'Y-m-d' );
}
public function Now() {
return date ( 'H:i:s' );
}
function __destruct() { //__destruct 析构方法，PHP将在对象被销毁前（即从内存中清除前）调用这个方法
unset ( $Name );
unset ( $Name );
unset ( $Like );
}
}
$my = new MyClass ( 'xiaoming', 'Programmer', 'I like PHP' );
var_dump ( $my ); //察看对象中内容
$rs = $my->info ();
echo $rs . '<hr/>';
echo $my->Now ();
?>
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