3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(preg_match('/www\.tableau(software)?.com$/', 'www.tableausoftware.com')); var_dump(preg_match('/www\.tableau(software)?.com$/', 'www.tableau.com')); var_dump(preg_match('/www\.tableau(software)?.com$/', 'kb.tableausoftware.com')); var_dump(preg_match('/www\.tableau(software)?.com$/', 'not.tableauprod.net')); var_dump(preg_match('/www\.tableau(software)?.com$/', 'tab.local'));
based on DPkOS
Output for 4.3.0 - 7.1.0
int(1) int(1) int(0) int(0) int(0)