array_column:将一个多维数组的转换为一个键值对数组

array_column( array $input , $column_key , $index_key)
第一个参数为原始数组,第二个参数(多维数组键名)为新数组的值,第三个参数(多维数组键名)为键.结果为一个键值对数组

$array = [

    ['id' => 1,'name' => 'tom','age' => 18],

    ['id' => 2,'name' => 'jack','age' => 19],

    ['id' => 3,'name' => 'mick','age' => 20],

    ['id' => 4,'name' => 'lucy','age' => 21],

    ['id' => 5,'name' => 'bill','age' => 22],

];

 

$arr = array_column($array,'name','id');

 

echo '<pre>';

print_r($arr);

 

result:

Array

(

    [1] => tom

    [2] => jack

    [3] => mick

    [4] => lucy

    [5] => bill

)