PHP中的函数重载

 

<?php
 class overLoad {
    public function __call($method,$p){
        if ( $method=="display" ) {
            if ( is_int($p[0]) ) {
                $this->displayint($p[0]);
            } elseif( is_array($p[0]) ) {
                $this->displayarray($p[0]);
            } else {
                $this->displaystring($p[0]);
            }
        }       
    }       
    public function displayint($p){
        echo "我是整数!<br />";
        echo $p;
    }       
    public function displayarray($p){
        echo "我是字符串!<br />";
        print($p);
    }       
    public function displaystring($p){
        echo "我是数组!<br />";
        print_r($p);
    }
}
 /**/
 $ol = new overLoad();

 $ol->display(99999);
$ol->display("wgw8299");
$ol->display(array("wgw","tiwer"));