IntlChar::charDigitValue

(PHP 7)

IntlChar::charDigitValue — Get the decimal digit value of a decimal digit character

说明

public static int IntlChar::charDigitValue ( mixed $codepoint )

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.

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

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

范例

Example #1 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)

参见

IntlChar::getNumericValue() - Get the numeric value for a Unicode code point