3v4l.org

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<?php $str = '+358 40 867 1180'; if(preg_match('', $str, $match)) { if(strlen($match[0]) === strlen($str)) { echo 'kyllä'; } else { echo 'ei'; } } else { echo 'eivv'; }
Output for 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Warning: preg_match(): Empty regular expression in /in/4t6VX on line 4 eivv
Output for 4.3.0 - 4.3.10
Warning: Empty regular expression in /in/4t6VX on line 4 eivv
preferences:
256.23 ms | 401 KiB | 354 Q