<?php

$heap = new SplMaxHeap();
$heap->insert('c');
$heap->insert('b');
$heap->insert('a');
$heap->insert('d');

echo 'top element: ' . $heap->top() . PHP_EOL;

foreach($heap as $val) {
    echo $val . PHP_EOL;
}

top element: d
d
c
b
a

• PHP's DoublyLinkedList
• Basic usage of PDO
• Checking if a transaction is still open in PDO

PHP 8.2, Laminas MVC 3.2, Symfony 5.2, Laravel 8.28, PHPUnit 9.5, Doctrine ORM 2.8