PHP - Function array_udiff_assoc()
Syntax
array_udiff_assoc ( $array1, $array2 [, $array3 ..., $data_compare_func] );
Definition and Usage
It computes the difference of arrays with additional index check, compares data by a callback function and returns an array containing all the values from array1 that are not present in any of the other arguments.
Parameters
| Sr.No | Parameter & Description |
|---|---|
| 1 |
array1(Required) It specifies an array. |
| 2 |
array2(Required) It specifies an array to be compared with the first array. |
| 3 |
array3(Optional) It specifies an array to be compared with the first array. |
| 4 |
data_compare_func*(Required) The name of the user-made function. |
Return Values
It returns an array containing all the values from array1 that are not present in any of the other arguments.
Example
Try out following example −
<?php
function call_back_function($v1,$v2) {
if ($v1 === $v2) {
return 0;
}
return 1;
}
$input = array("a"=>"orange","b"=>"orange","c"=>"mango");
$input1 = array("a"=>"orange","b"=>"mango","c"=>"orange");
print_r(array_udiff_assoc($input,$input1,"call_back_function"));
?>
This will produce the following result −
Array ( [b] => orange [c] => mango )
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