IntlChar::charDigitValue()

版本：php7

(PHP 7)

Get the decimal digit value of a decimal digit character

说明

publicstaticIntlChar::charDigitValue(mixed $codepoint): int

Returns the decimal digit value of a decimal digit character.

Such characters have the general category "Nd"(decimal digit numbers)and a Numeric_Type of Decimal.

$codepoint: The integer codepoint value(e.g.0x2603forU+2603 SNOWMAN), or the character encoded as a UTF-8 string(e.g."u{2603}")

The decimal digit value of$codepoint, or-1if it is not a decimal digit character.

Testing different code points

<?php
var_dump(IntlChar::charDigitValue("1"));
var_dump(IntlChar::charDigitValue("\u{0662}"));
var_dump(IntlChar::charDigitValue("\u{0E53}"));
?>

以上例程会输出：

int(1)
int(2)
int(3)