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<?php preg_match( '/^\[#(\d+)\]/', '[#1234]fdfasdfsdf', $matches); echo $matches[2]; // 1234
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: Undefined array key 2 in /in/aQe3R on line 3
Output for 5.5.0 - 5.5.35, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.25, 7.4.27 - 7.4.33
Notice: Undefined offset: 2 in /in/aQe3R on line 3
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.1 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 7.3.32 - 7.3.33, 7.4.26
Output for 5.1.0
<br /> <b>Fatal error</b>: fatal flex scanner internal error--end of buffer missed in <b>/in/aQe3R</b> on line <b>3</b><br />
Process exited with code 255.
preferences:
273.57 ms | 401 KiB | 387 Q