We now have a youtube channel. Subscribe!

PHP array_intersect_ukey() Function

PHP array_intersect_ukey() 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_intersect_ukey() Function.

The built-in array_intersect_ukey() function in PHP returns an array which contains all the values of array1 which have matching keys that are present in all the arguments.


Following below is the syntax to use this function -

array_intersect_ukey ( $array1, $array2 [, $array3..., callback $key_compare_func] );

Parameter Details

Sr.NoParameter & Description


The first array is the array that the others will be compared with.



This is an array to be compared with the first array



This is an array to be compared with the first array



User defined call back function.

Return Value

It returns False if there is any error.


Try out the below example -

   function key_compare_func($k1, $k2) {
      if ($k1 == $k2)
         return 0;
      else if ($k1 > $k2)
         return 1;
         return -1;
   $input1 = array('blue'=>1, 'red'=>2, 'green'=>3, 'purple'=>4);
   $input2 = array('green'=>5, 'blue'=>6, 'pink'=>7, 'black'=>8);
   $result = array_intersect_ukey($input1, $input2, "key_compare_func");


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

array(2) {

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_key_exists() 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.

Post a Comment

Hello dear readers! Please kindly try your best to make sure your comments comply with our comment policy guidelines. You can visit our comment policy page to view these guidelines which are clearly stated. Thank you.
© 2023 ‧ WebDesignTutorialz. All rights reserved. Developed by Jago Desain