The SplPriorityQueue::count() function is an inbuilt function in PHP which is used to count the number of elements in the queue.
Syntax:
int SplPriorityQueue::count()
Parameters: This function does not accept any parameters.
Return Value: This function returns the number of elements in the queue.
Example:
PHP
<?php // Declare a class class priorityQueue extends SplPriorityQueue { // Compare function to compare priority // queue elements public function compare($p1, $p2) { if ($p1 === $p2) return 0; return $p1 < $p2 ? -1 : 1; } } // Create an object of priority queue $obj = new priorityQueue(); // Insert elements into the queue $obj->insert("Geeks",2); $obj->insert("GFG",1); $obj->insert("G4G",3); $obj->insert('G',4); // Display the number of elements // in priority queue print_r($obj->count()); ?> |
Output
4
Reference: https://www.php.net/manual/en/splpriorityqueue.count.php
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