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<?php $reg = 'twitter.com/(\w+)'; $web = 'http://twitter.com/dcavuotti'; $arrMatches = array(); if (preg_match($reg,$web, $arrMatches)){ var_dump($arrMatches); }
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL in /in/C7vRj on line 6
Output for 5.2.3 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/C7vRj on line 6
Output for 4.4.3 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.2
<br /> <b>Warning</b>: preg_match() [<a href='function.preg-match'>function.preg-match</a>]: Delimiter must not be alphanumeric or backslash in <b>/in/C7vRj</b> on line <b>6</b><br />
Output for 4.3.11, 4.4.0 - 4.4.2
<br /> <b>Warning</b>: preg_match(): Delimiter must not be alphanumeric or backslash in <b>/in/C7vRj</b> on line <b>6</b><br />
Output for 4.3.0 - 4.3.10
<br /> <b>Warning</b>: Delimiter must not be alphanumeric or backslash in <b>/in/C7vRj</b> on line <b>6</b><br />

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