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run code in 300+ PHP versions simultaneously
<?php $dir = "/in/"; // Open a known directory, and proceed to read its contents if (is_dir($dir)) { if ($dh = opendir($dir)) { while (($file = readdir($dh)) !== false) { echo "filename: $file : filetype: " . filetype($dir . $file) . "\n"; } closedir($dh); } }

preferences:
38.46 ms | 402 KiB | 5 Q