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run code in 300+ PHP versions simultaneously
<?php $geoIp = 'http://orlando.holaciudad.com/'; $url = preg_match('http:\/\/(.*)\/', $geoIp, $matches); var_dump($matches);
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/DI10W on line 3 NULL
Output for 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 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 - 8.1.27
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/DI10W on line 3 NULL
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/DI10W on line 3 array(0) { }
Output for 4.3.0 - 4.3.10
Warning: Delimiter must not be alphanumeric or backslash in /in/DI10W on line 3 array(0) { }

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