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    IntlChar::digit

    (PHP 7)

    IntlChar::digit — Get the decimal digit value of a code point for a given radix

    설명

    public static int IntlChar::digit ( string $codepoint [, int $radix = 10 ] )

    Returns the decimal digit value of the code point in the specified radix.

    If the radix is not in the range 2<=radix<=36 or if the value of codepoint is not a valid digit in the specified radix, FALSE is returned. A character is a valid digit if at least one of the following is true:

    • The character has a decimal digit value. Such characters have the general category "Nd" (decimal digit numbers) and a Numeric_Type of Decimal. In this case the value is the character's decimal digit value.
    • The character is one of the uppercase Latin letters 'A' through 'Z'. In this case the value is c-'A'+10.
    • The character is one of the lowercase Latin letters 'a' through 'z'. In this case the value is ch-'a'+10.
    • Latin letters from both the ASCII range (0061..007A, 0041..005A) as well as from the Fullwidth ASCII range (FF41..FF5A, FF21..FF3A) are recognized.

    인수

    codepoint

    The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")

    radix

    The radix (defaults to 10).

    반환값

    Returns the numeric value represented by the character in the specified radix, or FALSE if there is no value or if the value exceeds the radix.

    Warning

    이 함수는 논리 FALSE를 반환하지만, 논리 FALSE로 취급할 수 있는 다른 값을 반환할 수 있습니다. 자세한 정보는 논리형 섹션을 참고하십시오. 이 함수의 반환값을 확인하려면 === 연산자를 이용하십시오.

    예제

    Example #1 Testing different code points

    <?php
    var_dump    (IntlChar::digit("0"));
    var_dump(IntlChar::digit("3"));
    var_dump(IntlChar::digit("A"));
    var_dump(IntlChar::digit("A", 16));
    ?>

    위 예제의 출력:

    int(0)
int(3)
bool(false)
int(10)

    참고

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