We now have a youtube channel. Subscribe!

PHP array_key_exists() Function

PHP array_key_exists() 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_key_exists() Function.

The array_key_exists() function returns true if the given key is set in the array.


Following below is the syntax to use this function -

bool array_key_exists ( $key, $array );

Parameter Details

Sr.NoParameter & Description


The key to be searched.



This is an array to be searched

Return Value

It returns TRUE if the given key exists in the array, else False.


Try out the below example -

   $input = array('first' => 10, 'second' => 400);
   if (array_key_exists('first', $input)) {
      echo "The 'first' element is in the array";


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

The 'first' element is in the array

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 PHP array_keys() 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