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run code in 300+ PHP versions simultaneously
<?php $_POST = [ 'wind_1' => 'hk', 'hamburger_66' => 'foo', 'wind_2' => 'pop', 'wind_25' => 'another', 'bar_111' => 'bar' ]; echo max(preg_replace('~^(?:wind_|.*)~', '', array_keys($_POST)));
Output for git.master, git.master_jit, rfc.property-hooks
25

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