php通过魔术方法__call实现类函数重载
由于在php是弱类型语言,并不像c++一样可以通过改变函数返回值的类型和函数的参数个数进行重载!但在实际开发中可能会有重载函数的需求,为了满足开发需求,我们可以通过魔术方法__call()来实现函数重载!
class Templates { <span style="white-space:pre"> </span>function __call($fun,$argv){ <span style="white-space:pre"> </span>if($fun=="assign"){ <span style="white-space:pre"> </span>if(count($argv)==1){ <span style="white-space:pre"> </span>$this->assign1($argv[0]); <span style="white-space:pre"> </span>} elseif(count($argv)==2){ $this->assign2($argv[0],$argv[1]); } } } //assign函数接受参数 function assign2($key,$value){ if(isset($key)&&!empty($value)){ $this->val["$key"]=$value; }else{ exit("ERROR:请设置变量"); } } //重载assign函数接受数组 function assign1($array){ if(!empty($array)){ foreach($array as $key => $value){ $this->val["$key"]=$value; } }else{ exit("ERROR:请设置数组"); } }}

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