IntlChar::isbase

    (PHP 7, PHP 8)

    IntlChar::isbase — Check if code point is a base character

    说明

    public static IntlChar::isbase(int|string $codepoint): ?bool

    Determines whether the specified code point is a base character. true for general categories "L" (letters), "N" (numbers), "Mc" (spacing combining marks), and "Me" (enclosing marks).

    注意:

    This is different from the Unicode definition in chapter 3.5, conformance clause D13, which defines base characters to be all characters (not Cn) that do not graphically combine with preceding characters (M) and that are neither control (Cc) or format (Cf) characters.

    参数

    codepoint

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

    返回值

    Returns true if codepoint is a base character, false if not. Returns null on failure.

    示例

    示例 #1 Testing different code points

    <?php
    var_dump    (IntlChar::isbase("A"));
    var_dump(IntlChar::isbase("1"));
    var_dump(IntlChar::isbase("\u{2603}"));
    ?>

    以上示例会输出：

    bool(true)
bool(true)
bool(false)

    参见

    Improve This Page

    Learn How To Improve This Page • Submit a Pull Request • Report a Bug
    ＋add a note

    User Contributed Notes

    There are no user contributed notes for this page.
    To Top