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run code in 300+ PHP versions simultaneously
<?php preg_match_all('#\bпхп|php\b#', 'пхп php', $m); print_r($m); echo PCRE_VERSION;
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => Array ( [0] => php ) ) 10.40 2022-04-14

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