note 88892 added to function.array-diff
| From: | ottodenn at gmail dot com | Date: | Thu, 12 Feb 2009 11:20:15 +0000 |
| Subject: | note 88892 added to function.array-diff | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-150564@lists.php.net to get a copy of this message | ||
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
----
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----
Manual Page -- http://www.php.net/manual/en/function.array-diff.php
Edit -- https://master.php.net/note/edit/88892
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Del: non-english -- https://master.php.net/note/delete/88892/non-english
Del: in docs -- https://master.php.net/note/delete/88892/in+docs
Del: other reasons-- https://master.php.net/note/delete/88892
Reject -- https://master.php.net/note/reject/88892
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