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 = [

   [

      'field_type' => 'Title',

      '_id' => 1

   ],

   [

      'field_type' => 'Title',

      '_id' => 2

   ]

];

// Pass by reference to allow array mutation

foreach($arr as &$a)

{

   unset($a['_id']);

}

print_r($arr);