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<html><body>function countLetters($matches) { return $matches[0] . '(' . strlen($matches[0]) . ')';}$input = "Welcome to W3Schools.com!";$pattern = '/[a-z0-9\.]+/i';$result = preg_replace_callback($pattern, 'countLetters', $input);echo $result;</body><!-- Mirrored from www.w3schools.com/php/phptryit.asp?filename=tryphp_func_regex_preg_replace_callback by HTTrack Website Copier/3.x [XR&CO'2014], Wed, 21 Dec 2022 17:22:58 GMT --></html>
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