3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = "1234kjhgkdfkgjh"; $result = ctype_digit(substr($str, 0, 2)); var_dump($result); $str2 = ".1234kjhgkdfkgjh"; $result = ctype_digit(substr($str2, 0, 2)); var_dump($result);

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26.24 ms | 406 KiB | 5 Q