IntlChar::isalnum
(PHP 7)
IntlChar::isalnum — Check if code point is an alphanumeric character
说明
Determines whether the specified code point is an alphanumeric character (letter or digit). TRUE
for characters with general categories "L" (letters) and "Nd" (decimal digit numbers).
参数
返回值
Returns TRUE
if
codepoint
is an alphanumeric character, FALSE
if not.
范例
Example #1 Testing different code points
<?php
var_dump(IntlChar::isalnum("A"));
var_dump(IntlChar::isalnum("1"));
var_dump(IntlChar::isalnum("\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