How to use SplQueue::__construct() function in PHP?

This article will introduce to you how to use the "SplQueue::__construct()" function in PHP. It has certain reference value. Friends in need can refer to it. I hope it will be helpful to everyone.

SplQueue::__construct() function is a built-in function in PHP, used to construct a queue implemented using a double linked list.

The syntax is as follows:

void SplQueue::__construct(void)

Parameters: This function does not accept any parameters.

Return value: This function does not return any value.

The following program illustrates the SplQueue::__ construct() function in PHP:

Program 1:

<?php
  
// Create a new empty queue
$q = new SplQueue();
  
$q [] = 1;
$q [] = 2;
$q [] = 3;
  
// Print the queue elements
echo $q [0] . "n" ;
echo $q [1] . "n" ;
echo $q [2] . "n" ;
?>

The output is as follows:

1
2
3

Program 2:

<?php
  
// Create some fixed size array
$gfg = new SplQueue();
  
$gfg [] = 1;
$gfg [] = 5;
$gfg [] = 1;
$gfg [] = 11;
$gfg [] = 15;
$gfg [] = 17;
  
foreach ( $gfg as $elem )  {
     echo $elem . "n" ;
}
?>

The output is as follows:

1
5
1
11
15
17

Recommended learning: php video tutorial

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