php-foreach遍历数组

 1  
 2         $arr=$this->getPic();//接受经json转码过来的二维数组
 3          //echo "<pre/>";
 4         echo "<hr/>";
 5         foreach($arr as $pic){
 6              var_dump($pic);
 7              if(is_array($pic)){
 8              foreach($pic as $cao){
 9                   echo  $cao[‘url‘] ;
10                   echo "<br/>";
11               }
12            }  
13          }