PHP 배열 array column()

1 개요

PHP array_column()

$orders = [
	['id'=>1, 'name'=>'Ashley', 'date'=>'2020-05-20'],
	['id'=>2, 'name'=>'Peter' , 'date'=>'2020-05-20'],
	['id'=>3, 'name'=>'Ashley', 'date'=>'2020-05-05'],
	['id'=>4, 'name'=>'John'  , 'date'=>'2020-05-05'],
	['id'=>5, 'name'=>'Peter' , 'date'=>'2020-05-05'],
];
$names = array_column($orders, 'name');
print_r( $names );

$records = [
   ['id' => 2135, 'first_name' => 'John', 'last_name' => 'Doe'],
   ['id' => 3245, 'first_name' => 'Sally', 'last_name' => 'Smith'],
   ['id' => 5342, 'first_name' => 'Jane', 'last_name' => 'Jones'],
];
 
$first_names = array_column($records, 'first_name');
print_r($first_names);
# Array
# (
#     [0] => John
#     [1] => Sally
#     [2] => Jane
# )

$records = [
   ['id' => 2135, 'first_name' => 'John', 'last_name' => 'Doe'],
   ['id' => 3245, 'first_name' => 'Sally', 'last_name' => 'Smith'],
   ['id' => 5342, 'first_name' => 'Jane', 'last_name' => 'Jones'],
];
 
$last_names = array_column($records, 'last_name', 'id');
print_r($last_names);
# Array
# (
#     [2135] => Doe
#     [3245] => Smith
#     [5342] => Jones
#     [5623] => Doe
# )

2 같이 보기

• PHP array_columns()
• 배열
• 컬럼
• 함수 array_column()

3 참고

• http://php.net/manual/en/function.array-column.php
• https://www.w3schools.com/php/func_array_column.asp