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ctype_alnumDescriptionbool ctype_alnum ( string text)Returns TRUE if every character in text is either a letter or a digit, FALSE otherwise. In the standard C locale letters are just [A-Za-z] and the function is equivalent to preg_match('/^[a-z0-9]*$/i', $text). See also ctype_alpha(), ctype_digit(), and setlocale(). |
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