note 102582 added to function.array-diff
| From: | anton at osu1 dot php dot net | Date: | Tue, 22 Feb 2011 23:57:11 +0000 |
| Subject: | note 102582 added to function.array-diff | ||
| Groups: | php.notes | ||
| Request: | Send a blank email to php-notes+get-177233@lists.php.net to get a copy of this message | ||
A function to find values that only occur once in a number of arrays. I still need one to allow any
amount of input arrays, so if anyone knows, please let me know.
This is my function to find all the unique values:
<?php
function array_uniquevalues($array1,$array2,$array3)
{
$trvalues[] = array_merge(
array_intersect($array1,$array2),array_intersect($array2,$array1)
);
$trvalues[] = array_merge(
array_intersect($array2,$array3),array_intersect($array3,$array2)
);
$trvalues[] = array_merge(
array_intersect($array1,$array3),array_intersect($array3,$array1)
);
$trvalues = array_unique(
array_merge($trvalues[0],$trvalues[1],$trvalues[2])
);
$tvalues = array_unique(array_merge($array1,$array2,$array3));
$rvalues = array_diff($tvalues,$trvalues);
$rvalues = array_values($rvalues);
return $rvalues;
}
$array1 = array('red','green','blue');
$array2 = array('red','yellow','green');
$array3 = array('pink','yellow','red');
print_re(array_uniquevalues($array1,$array2,$array3));
?>
result:
Array
(
[0]=>blue
[1]=>pink
)
----
Server IP: 79.99.203.17
Probable Submitter: 94.227.67.171
----
Manual Page -- http://www.php.net/manual/en/function.array-diff.php
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