PHP定义一个类，设置属性并且使用的例子

<?php
class Hello {
	private $content = "HelloMyPHP";
	public $name;
	
	public function getContent() {
		return $this->content;
	}
	function __construct($name) {
		$this->name = $name;
		echo "__construct<br/>" . $this->name;
	}
	function __destruct() {
		echo "<br/>__destruct<br/>byebye";
	
	}
	
	public function setContent($content) {
		echo "<br/>setContent<br/>" . $content;
		$this->content = $content;
	}
	
	function dangerous() {
		try {
			throw new Exception ( "<br/>就是想跑出异常罢了<br/>" );
		} catch ( Exception $e ) {
			echo $e->getMessage ();
		}
	}
}

$myHello = new Hello ( "myname" );
$myHello->setContent ( "我的内容" );
echo $myHello->getContent ();
echo $myHello->name;
$myHello->dangerous ();
?>