Online PHP editor | refs for 2Jvk0

<?php $files = [ [ "name" => "testä.jpg" ], [ "name" => "test.jpg" ], [ "name" => "ä" ] ]; foreach ($files as $file) { $filename = $file['name']; if (!preg_match('/^[\w.-]+$/i', $filename)) { echo "Error for: $filename" . PHP_EOL; } else { echo "No error for: $filename" . PHP_EOL; } }