note 88892 deleted from function.array-diff by danbrown
| From: | danbrown@php.net | Date: | Thu, 10 Sep 2009 00:57:02 +0000 |
| Subject: | note 88892 deleted from function.array-diff by danbrown | ||
| References: | 1 | Groups: | php.notes |
| Request: | Send a blank email to php-notes+get-160390@lists.php.net to get a copy of this message | ||
Note Submitter: ottodenn at gmail dot com
----
I needed a function which compares $arr1 with $arr2 and return all values from $arr2 that
aren't in $arr1.
Additionally the function has to compares multiarrays to.
Here is it:
<?php
function arr_diff($a1,$a2){
$ar = array();
foreach ($a2 as $k => $v) {
if (!is_array($v)) {
if ($v !== $a1[$k])
$ar[$k] = $v;
}else{
if ($arr = arr_diff($a1[$k], $a2[$k]))
$ar[$k] = $arr;
}
}
return $ar;
}
// example:
$arr1 = array(
'user1' => array(
'name' => 'john d.',
'street' => 'elmstreet no. 2',
'city' => 'berlin'
),
'user2' => array(
'name' => 'harald c.',
'street' => 'b-street no. 7',
'city' => 'cologne'
)
);
$arr2 = array(
'user1' => array(
'name' => 'john b.', // change #1
'street' => 'elmstreet no. 2',
'city' => 'berlin'
),
'user2' => array(
'name' => 'harald c.',
'street' => 'b-street no. 7',
'city' => 'bavaria' // change #2
)
);
print_r(arr_diff($arr1, $arr2));
/*
will output:
Array
(
[user1] => Array
(
[name] => john b.
)
[user2] => Array
(
[city] => bavaria
)
)
*/
?>
maybe someone can need this, for my usage it works proper.
regards