array_column() 函數

從記錄集中取出 last_name 列：

<?php
// 表示由數據庫返回的可能記錄集的數組
$a = array(
  array(
    ‘id‘ => 5698,
    ‘first_name‘ => ‘Bill‘,
    ‘last_name‘ => ‘Gates‘,
  ),
  array(
    ‘id‘ => 4767,
    ‘first_name‘ => ‘Steve‘,
    ‘last_name‘ => ‘Jobs‘,
  ),
  array(
    ‘id‘ => 3809,
    ‘first_name‘ => ‘Mark‘,
    ‘last_name‘ => ‘Zuckerberg‘,
  )
);

$last_names = array_column($a, ‘last_name‘);
print_r($last_names);
?>

　　輸出“”

Array
(
  [0] => Gates
  [1] => Jobs
  [2] => Zuckerberg
)

從記錄集中取出 last_name 列，用相應的 "id" 列作為鍵值：

<?php
// 表示由數據庫返回的可能記錄集的數組
$a = array(
  array(
    ‘id‘ => 5698,
    ‘first_name‘ => ‘Bill‘,
    ‘last_name‘ => ‘Gates‘,
  ),
  array(
    ‘id‘ => 4767,
    ‘first_name‘ => ‘Steve‘,
    ‘last_name‘ => ‘Jobs‘,
  )
  array(
    ‘id‘ => 3809,
    ‘first_name‘ => ‘Mark‘,
    ‘last_name‘ => ‘Zuckerberg‘,
  )
);

$last_names = array_column($a, ‘last_name‘, ‘id‘)
 
;
print_r($last_names);
?>

輸出：

Array
(
  [5698] => Gates
  [4767] => Jobs
  [3809] => Zuckerberg
)
註意：
不返回莫一列，直接將全部數組返回，然後將元素值作為鍵名，中間字段為空

$newArray1 = array_column($data,NULL,‘uid‘);

返回數組中指定的一列，將鍵值作為元素鍵名array_column