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<?php $course_id = "SW_3200R50S14C"; $matches = array(); preg_match("/[0-9]+/",$course_id, $matches); print_r($matches); $matches = array(); preg_match("R/[0-9]+/",$course_id, $matches); print_r($matches);
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Array ( [0] => 3200 ) Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL in /in/lNERs on line 11 Array ( )
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 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
Array ( [0] => 3200 ) Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/lNERs on line 11 Array ( )
Output for 4.3.0 - 4.3.10
Array ( [0] => 3200 ) Warning: Delimiter must not be alphanumeric or backslash in /in/lNERs on line 11 Array ( )

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