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

The built-in PHP Ds Deque insert() function can insert the value into the deque at the given index.

Syntax

Following below is the syntax to use this function -

public void Ds\Deque::insert( int $index [, mixed $...values ] )

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

Return Value

This built-in PHP function does not return any value. If an index is not valid, then this function throws an OutOfRangeException.

Example1

Try out the below example -

<?php 
   $deque = new \Ds\Deque([1, 2, 3, 4, 5]); 
   echo("The elements in the Deque: \n"); 
   print_r($deque); 
   echo("\n Insert a value 6 at index 4: \n"); 
   
   $deque->insert(4, 6); 
   print_r($deque);
?>

Example2

Try the following example -

<?php 
   $deque = new \Ds\Deque([1, 2, 3, 4, 5]); 
   echo("The original deque: \n"); 
   print_r($deque); 
   echo("\n The modified deque: \n"); 
   
   $deque->insert(2, ...[10, 20, 30]); 
   print_r($deque); 
?>

READ: PHP | Ds\Deque::filter() 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 Ds Deque isEmpty() Function in PHP.

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