©
本文档使用 PHP中文网手册 发布
(PHP 7)
IntlChar::isdigit — Check if code point is a digit character
$codepoint
)Determines whether the specified code point is a digit character.
TRUE
for characters with general category "Nd" (decimal digit numbers). Beginning with Unicode 4, this is the same as testing for the Numeric_Type of Decimal.
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}")
Returns TRUE
if
codepoint
is a digit character, FALSE
if not.
Example #1 Testing different code points
<?php
var_dump ( IntlChar :: isdigit ( "A" ));
var_dump ( IntlChar :: isdigit ( "1" ));
var_dump ( IntlChar :: isdigit ( "\t" ));
?>
以上例程会输出:
bool(false) bool(true) bool(false)