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run code in 300+ PHP versions simultaneously
<?php $x = preg_match('asdf','asdf'); echo array_flip(get_defined_constants(true)['pcre'])[preg_last_error()];
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6
Warning: preg_match(): Delimiter must not be alphanumeric, backslash, or NUL in /in/FSkBS on line 2 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/FSkBS on line 4 PREG_INTERNAL_ERROR
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(): Delimiter must not be alphanumeric, backslash, or NUL in /in/FSkBS on line 2 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/FSkBS on line 4 PREG_INTERNAL_ERROR
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/FSkBS on line 2 Warning: array_flip(): Can only flip string and integer values, entry skipped in /in/FSkBS on line 4 PREG_INTERNAL_ERROR
Output for 7.3.24 - 7.3.33, 7.4.12 - 7.4.33
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/FSkBS on line 2 Warning: array_flip(): Can only flip STRING and INTEGER values! in /in/FSkBS on line 4 PREG_INTERNAL_ERROR
Output for 7.1.6
Warning: preg_match(): Delimiter must not be alphanumeric or backslash in /in/FSkBS on line 2 PREG_NO_ERROR

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