類的不錯的調用方法

<?php  

class example {  

    var $name;  

    var $sex;  

    function name($name) {  

        $this->name = $name;  

        return $this;  

    }  

    function sex($sex) {  

        $this->sex = $sex;  

    function trace() {  

        print("Name: {$this->name},Sex: {$this->sex}");  

}  

$person = new example;  

$person->name("lisha")->sex("female")->trace();  

/*output 

Name:lisha,Sex:female 

*/  

?>