array_walk()方法回调

1. [代码]array_walk    

  1 <?php
  2 $array = array('foo' => 'bar', 'baz' => 'bat');
  3 
  4 array_walk($array, function($val,$key) use(&$array){
  5     if ($val == 'bar') {
  6         unset($array[$key]);
  7     }
  8 });
  9 
 10 var_dump($array);
 11 ?>