PHP | Ds\Deque::unshift() 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 Deque unshift() Function.

The PHP Ds Deque unshift() function adds values to front of the deque, moving all the current values forward to make room for new values.

Syntax

Following below is the syntax to use this function -

public void Ds\Deque::unshift([ mixed $values ] )

READ: PHP | Ds\Deque::toArray() Function

Return Value

This built-in PHP function does not return any value.

Example

Try out the below example -

<?php  
   $deque = new \Ds\Deque([10, 20, 30]);  
   $deque -> unshift(3); 
   $deque -> unshift(7); 
   $deque -> unshift(2); 
   print_r($deque); 
?> 

READ: PHP | Ds\Deque::slice() 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 PHP Directory Function.

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