The SplQueue::__construct() function is an inbuilt function in PHP which is used to construct a queue which is implemented using a doubly-linked list.
Syntax:
php
php
void SplQueue::__construct(void)Parameters: This function does not accept any parameter. Return Value: This function does not return any value. Below programs illustrate 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";
?>
Output:
Program 2:
1 2 3
<?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";
}
?>
Output:
1 5 1 11 15 17