array_udiff
Computes the difference of arrays by using a callback function for data comparison
&reftitle.description;
arrayarray_udiff
arrayarray1
arrayarray2
array ...
callabledata_compare_func
Computes the difference of arrays by using a callback function for data
comparison. This is unlike array_diff which uses an
internal function for comparing the data.
&reftitle.parameters;
array1
The first array.
array2
The second array.
data_compare_func
The callback comparison function.
&return.callbacksort;
&callback.cmp;
&reftitle.returnvalues;
Returns an array containing all the values of array1
that are not present in any of the other arguments.
&reftitle.examples;
<function>array_udiff</function> example
priv_member = $val;
}
static function comp_func_cr($a, $b)
{
if ($a->priv_member === $b->priv_member) return 0;
return ($a->priv_member > $b->priv_member)? 1:-1;
}
}
$a = array("0.1" => new cr(9), "0.5" => new cr(12), 0 => new cr(23), 1=> new cr(4), 2 => new cr(-15),);
$b = array("0.2" => new cr(9), "0.5" => new cr(22), 0 => new cr(3), 1=> new cr(4), 2 => new cr(-15),);
$result = array_udiff($a, $b, array("cr", "comp_func_cr"));
print_r($result);
?>
]]>
&example.outputs;
cr Object
(
[priv_member:private] => 12
)
[0] => cr Object
(
[priv_member:private] => 23
)
)
]]>
&reftitle.notes;
Please note that this function only checks one dimension of a n-dimensional
array. Of course you can check deeper dimensions by using
array_udiff($array1[0], $array2[0], "data_compare_func");.
&reftitle.seealso;
array_diff
array_diff_assoc
array_diff_uassoc
array_udiff_assoc
array_udiff_uassoc
array_intersect
array_intersect_assoc
array_uintersect
array_uintersect_assoc
array_uintersect_uassoc