IntlChar::isalpha

(PHP 7)

IntlChar::isalpha — 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. 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 letter character, FALSE if not.

范例

Example #1 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