PHP | Ds\Queue::peek() Function

PHP Ds\Queue::peek() Function

Hello folks! welcome back to a new edition of our tutorial on PHP. In this tutorial guide, we are going to be studying about the PHP Ds\Queue::peek() Function.

The built-in PHP Ds\Queue::peek() function returns a value at the front of a queue.


Following below is the syntax to use this function -

public mixed Ds\Queue::peek( void )

Parameter Details

This built-in PHP function does not have any parameter.

Return Value

This function returns a value at the front of a queue but doesn't remove it. This function can throw an UnderflowException if empty.


Try out the following example below -

   $queue = new \Ds\Queue();  
   echo "The queue is: \n"; 
   echo "\n The element at front is:"; 

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 PHP Ds\Queue::pop() Function.

Do 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.

Do follow us on our various social media handles available and also subscribe to our newsletter to get our tutorial posts delivered directly to your emails.

Thanks for reading and bye for now.