IntlChar::istitle()
版本:php7
(PHP 7)
Check if code point is a titlecase letter
说明
public static IntlChar::istitle(mixed $codepoint): bool
Determines whether the specified code point is a titlecase letter.
TRUE
for general category "Lt"(titlecase letter).
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 titlecase letter,FALSE
if not.
范例
Testing different code points
<?php var_dump(IntlChar::istitle("A")); var_dump(IntlChar::istitle("a")); var_dump(IntlChar::istitle("Φ")); var_dump(IntlChar::istitle("φ")); var_dump(IntlChar::istitle("1")); ?>
以上例程会输出:
bool(false) bool(true) bool(false) bool(true) bool(false)
参见
- IntlChar::isupper() Check if code point has the general category "Lu"(uppercase letter)
- IntlChar::islower() Check if code point is a lowercase letter
- IntlChar::totitle() Make Unicode character titlecase