note 24545 modified in function.array-keys by vrana
| From: | vrana@php.net | Date: | Tue, 17 Aug 2004 13:58:36 +0000 |
| Subject: | note 24545 modified in function.array-keys by vrana | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-79769@lists.php.net to get a copy of this message | ||
Here is a way to use array_intersect on array keys rather than values:
<?php
$a = array("apple" => "red", "banana" => "yellow");
$z = array("apple" => "green", "peach" => "orange",
"banana" => "rotten");
$intersected_keys = array_intersect(array_keys($a), array_keys($z));
print_r($intersected_keys);
?>
This will print:
Array ( [0] => apple [1] => banana )
--was--
Here is a way to use array_intersect on array keys rather than values:
$a = array("apple" => "red", "banana" => "yellow");
$z = array("apple" => "green", "peach" => "orange",
"banana" => "rotten");
$intersected_keys = array_intersect(array_keys($a), array_keys($z));
print_r($intersected_keys);
This will print:
Array ( [0] => apple [1] => banana )
http://php.net/manual/en/function.array-keys.php