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run code in 500+ PHP versions simultaneously
<?php $re = '/^(\S+)\h+\[\S*\](?!\S).*$(?![\s\S]*^\1)/m'; $str = 'green [foo] [foo1] red [foo] blue [foo] [foo1] [foo2] yellow [foo2] green [foo] green [foo] [foo1] red [foo] pink [foo3]'; preg_match_all($re, $str, $matches); print_r($matches[0]);
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.4, 8.3.6 - 8.3.30, 8.4.1 - 8.4.21, 8.5.0 - 8.5.7
Array ( [0] => blue [foo] [foo1] [foo2] [1] => yellow [foo2] [2] => green [foo] [foo1] [3] => red [foo] [4] => pink [foo3] )
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] => blue [foo] [foo1] [foo2] [1] => yellow [foo2] [2] => green [foo] [foo1] [3] => red [foo] [4] => pink [foo3] )
preferences:
97.04 ms | 1436 KiB | 4 Q