'; } // run some tests to verify solution echo 'Positive tests:
'; test($pattern, '00:00:00'); test($pattern, '23:59:59'); test($pattern, '10:10:00'); test($pattern, '11:11:11'); test($pattern, '10:10:06'); test($pattern, '14:09:23'); echo '
Negative tests:
'; test($pattern, '24:00:00', false); test($pattern, '10:00:60', false); test($pattern, '10:60:00', false); ?>