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run code in 300+ PHP versions simultaneously
<?php $str = 'Hello world [something here]{optional}{optional}{optional}{n possibilities of this}'; var_export(preg_split('/ *\[|\]|(?=\{)/', $str, 0, PREG_SPLIT_NO_EMPTY));
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.4, 8.3.6 - 8.3.7
array ( 0 => 'Hello world', 1 => 'something here', 2 => '{optional}', 3 => '{optional}', 4 => '{optional}', 5 => '{n possibilities of this}', )
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 array ( 0 => 'Hello world', 1 => 'something here', 2 => '{optional}', 3 => '{optional}', 4 => '{optional}', 5 => '{n possibilities of this}', )

preferences:
116.54 ms | 402 KiB | 158 Q