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run code in 300+ PHP versions simultaneously
<?php $blah = 'Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Trident/6.0)'; if (preg_match('/MSIE ([0-9]*(?:\\.[0-9]*)?)([0-9.]*);/', $_SERVER['HTTP_USER_AGENT'], $matches)){ var_dump($matches); }
Output for git.master, git.master_jit, rfc.property-hooks
Warning: Undefined array key "HTTP_USER_AGENT" in /in/T0DiZ on line 3 Deprecated: preg_match(): Passing null to parameter #2 ($subject) of type string is deprecated in /in/T0DiZ on line 3

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