3v4l.org

run code in 300+ PHP versions simultaneously
<?php $pattern = '/\b' . preg_quote('Ro\(M\)') . '\b/ui'; $sample = 'Ro(M)'; echo (int)preg_match( $pattern, $sample, $matches).PHP_EOL; print_r($matches);

preferences:
41.03 ms | 402 KiB | 5 Q