Online PHP editor | output for DYc3D

<?php $keywords = "val"; preg_match_all('/\w+(?=;|$)/', $keywords, $matches); echo implode(' OR ', $matches[0]) . "\n"; $keywords = "val;"; preg_match_all('/\w+(?=;|$)/', $keywords, $matches); echo implode(' OR ', $matches[0]) . "\n"; $keywords = "val1; val2;"; preg_match_all('/\w+(?=;|$)/', $keywords, $matches); echo implode(' OR ', $matches[0]) . "\n"; $keywords = "val1; val2"; preg_match_all('/\w+(?=;|$)/', $keywords, $matches); echo implode(' OR ', $matches[0]) . "\n";