在多维数组中未设置

Question

这是我的数组：

 array(

  [0] => Array (    

      [field_type] => title 

       [_id] => 4d143e6 ) 

  [1] => Array ( 

      [field_type] => title 

      [_id] => 89ff3a3 ) 

   );

如何从此数组中删除 _id 键..请帮忙

Answer 1

<?php$arr = [&nbsp; &nbsp;[&nbsp; &nbsp; &nbsp; 'field_type' => 'Title',&nbsp; &nbsp; &nbsp; '_id' => 1&nbsp; &nbsp;],&nbsp; &nbsp;[&nbsp; &nbsp; &nbsp; 'field_type' => 'Title',&nbsp; &nbsp; &nbsp; '_id' => 2&nbsp; &nbsp;]];// Pass by reference to allow array mutationforeach($arr as &$a){&nbsp; &nbsp;unset($a['_id']);}print_r($arr);