IntlChar::isalpha()
版本:php7
(PHP 7)
Check if code point is a letter character
说明
public static IntlChar::isalpha(mixed $codepoint): bool
Determines whether the specified code point is a letter character.TRUE
for general categories "L"(letters).
参数
- $codepoint
The integer codepoint value(e.g.0x2603forU+2603 SNOWMAN), or the character encoded as a UTF-8 string(e.g."u{2603}")
返回值
Returns TRUE
if$codepointis a letter character,FALSE
if not.
范例
Testing different code points
<?php var_dump(IntlChar::isalpha("A")); var_dump(IntlChar::isalpha("1")); var_dump(IntlChar::isalpha("\u{2603}")); ?>
以上例程会输出:
bool(true) bool(false) bool(false)
参见
- IntlChar::isalnum() Check if code point is an alphanumeric character
- IntlChar::isdigit() Check if code point is a digit character