php[tek] 2018 : Call for Speakers

IntlChar::isdigit

(PHP 7)

IntlChar::isdigitCheck if code point is a digit character

说明

public static bool IntlChar::isdigit ( mixed $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.

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 digit character, FALSE if not.

范例

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)

参见

add a note add a note

User Contributed Notes

There are no user contributed notes for this page.
To Top