IntlChar::isdigit Check if code point is a digit character &reftitle.description; public static boolnullIntlChar::isdigit intstringcodepoint Determines whether the specified code point is a digit character. &true; for characters with general category "Nd" (decimal digit numbers). Beginning with Unicode 4, this is the same as testing for the Numeric_Type of Decimal. &reftitle.parameters; codepoint &intl.codepoint.parameter; &reftitle.returnvalues; Returns &true; if codepoint is a digit character, &false; if not. Returns &null; on failure. &reftitle.examples; ]]> &example.outputs; &reftitle.seealso; IntlChar::isalpha IntlChar::isalnum IntlChar::isxdigit ctype_digit