3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Solver { private $fileHandle; public function __construct($filename) { $this->fileHandle = fopen($filename, 'r'); } public function solve() { } public function __destruct() { fclose($this->fileHandle); } } (new Solver($argv[1]))->solve();

preferences:
43.86 ms | 402 KiB | 5 Q