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<?php preg_match( '/^\(\d+)\/', '050Subject', $matches); echo $matches[1]; // 1234
Output for 8.3.0 - 8.3.4, 8.3.6
Warning: preg_match(): No ending delimiter '/' found in /in/NF85E on line 2 Warning: Trying to access array offset on null in /in/NF85E on line 3
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 Warning: preg_match(): No ending delimiter '/' found in /in/NF85E on line 2 Warning: Trying to access array offset on null in /in/NF85E on line 3
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18
Warning: preg_match(): No ending delimiter '/' found in /in/NF85E on line 2 Warning: Trying to access array offset on value of type null in /in/NF85E on line 3
Output for 7.4.0 - 7.4.33
Warning: preg_match(): No ending delimiter '/' found in /in/NF85E on line 2 Notice: Trying to access array offset on value of type null in /in/NF85E on line 3
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33
Warning: preg_match(): No ending delimiter '/' found in /in/NF85E on line 2

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