IntlChar::istitle

(PHP 7)

IntlChar::istitle — Check if code point is a titlecase letter

说明

public static bool IntlChar::istitle ( mixed $codepoint )

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. 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 titlecase letter, FALSE if not.

范例

Example #1 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