Php/docs/intlchar.isbase

• PHP Manual
• IntlChar
• Check if code point is a base character

IntlChar::isbase

(PHP 7)

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

说明

public static IntlChar::isbase ( mixed $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).

Note:

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.

范例

Example #1 Testing different code points

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

以上例程会输出：

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

参见

• IntlChar::isalpha() - Check if code point is a letter character
• IntlChar::isdigit() - Check if code point is a digit character