PHP array_udiff() Function

Hello folks! welcome back to a new section of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP array_udiff() Function.

The PHP array_udiff() function computes the difference of arrays using a callback function for data comparison and returns an array containing all of the values from array1 that are not present in any of the other arguments.

Syntax

Following below is the syntax to use this function -

array_udiff( $array1, $array2 [, $array3 ..., $data_compare_func] );

READ: PHP array_sum() Function

Parameter Details

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 Value

It returns an array containing all the values from array1 that are not present in the other arguments.

Example

Try out the below example -

<?php
   function call_back_function($v1,$v2) {
      if ($v1 === $v2) {
         return 0;
      }
      return 1;
   }
   $array1 = array("a"=>"orange","b"=>"mango","c"=>"banana");
   $array2 = array("a"=>"orange","b"=>"mango","c"=>"apple");
   
   print_r(array_udiff_assoc($array1,$array2,"call_back_function"));
?> 

Output

When the above code is executed, it will produce the following result -

Array ( [c] => banana )	

READ: PHP array_splice() Function

Alright guys! This is where we are going to be rounding up for this tutorial post. In our next tutorial, we are going to be discussing about the built-in PHP array_udiff_assoc() Function.

Feel free to ask your questions where necessary and we will attend to them as soon as possible. If this tutorial was helpful to you, you can use the share button to share this tutorial.

Follow us on our various social media platforms to stay updated with our latest tutorials. You can also subscribe to our newsletter in order to get our tutorials delivered directly to your emails.

Thanks for reading and bye for now.