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<?php function get_numerics ($str) { preg_match('/^mom_\d+/', $str, $matches); return $matches[0]; } $one = 'mom_5'; $two = 'mom_123'; $three = 'actions'; print_r(get_numerics($one)); print_r(get_numerics($two)); print_r(get_numerics($three));
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
mom_5mom_123 Warning: Undefined array key 0 in /in/HBe7m on line 5
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 mom_5mom_123 Warning: Undefined array key 0 in /in/HBe7m on line 5
Output for 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
mom_5mom_123 Notice: Undefined offset: 0 in /in/HBe7m on line 5
Output for 7.3.32 - 7.3.33, 7.4.26
mom_5mom_123
preferences:
136.7 ms | 401 KiB | 219 Q