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<?php $str = '/2013/06/14/chocolate-peanut-butter-cups/'; $regex = '/[d{4}/\d{2}/\d{2}/[a-z0-9-]'; preg_match($regex, $str, $matches); print_r($matches);
Output for 5.2.3 - 7.1.0
Warning: preg_match(): Unknown modifier '\' in /in/2Muim on line 4
Output for 5.2.0 - 5.2.2
<br /> <b>Warning</b>: preg_match() [<a href='function.preg-match'>function.preg-match</a>]: Unknown modifier '\' in <b>/in/2Muim</b> on line <b>4</b><br />
Output for 4.4.3 - 5.1.6
<br /> <b>Warning</b>: preg_match() [<a href='function.preg-match'>function.preg-match</a>]: Unknown modifier '\' in <b>/in/2Muim</b> on line <b>4</b><br /> Array ( )
Output for 4.3.11 - 4.4.2
<br /> <b>Warning</b>: preg_match(): Unknown modifier '\' in <b>/in/2Muim</b> on line <b>4</b><br /> Array ( )
Output for 4.3.0 - 4.3.10
<br /> <b>Warning</b>: Unknown modifier '\' in <b>/in/2Muim</b> on line <b>4</b><br /> Array ( )