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<?php $_POST = [ 'wind_1' => 'hk', 'hamburger_66' => 'foo', 'wind_2' => 'pop', 'wind_25' => 'another' ]; foreach ($_POST as $k => $v) { if (strpos($k, 'wind_') === 0) { $key = $k; } } echo filter_var($key, FILTER_SANITIZE_NUMBER_INT);
Output for git.master, git.master_jit, rfc.property-hooks
25

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