php数组遍历类与用法示例

<?php  class scanArray{    public $arr;    public $where;    private $str;    public function scan($arr,$where="array"){      $this->arr = $arr;      $this->where = $where;      foreach($this->arr as $k=>$v){        if(is_array($v)){          $this->where = ($this->where)."[{$k}]";          $this->scan($v,$this->where);        }else{          $this->str .= $this->where."[{$k}]=".$v.'<br />';        }      }      return $this->str;    }    function __destruct(){      unset($this->arr);      unset($this->where);    }  }  $a = array('g'=>"a",'vv'=>array("b"=>"b","l"=>"c","xx"=>array("e","g")));  $ah = new scanArray();  $b = $ah->scan($a);  echo $b;