[英]Get certain elements of an array by its key
我确信这有一个功能:
是)我有的:
$myArray = array( 'foo' => 123, 'bar' => 456, 'lou' => 789, 'wuh' => 'xyz' );
$iNeed = array( 'foo', 'lou' );
如何获得$iNeed
的键值对:
$output = super_magic_function( $iNeed, $myArray );
// output should be array( 'foo' => 123, 'lou' => 789 );
如何调用super_magic_function
(如果可能, super_magic_function
native php)
$output = array_intersect_key($myArray, array_flip($iNeed));
如果你需要它作为一个功能:
function super_magic_function($array, $required) {
return array_intersect_key($array, array_flip($required));
}
输出:
Array
(
[foo] => 123
[lou] => 789
)
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