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IntlChar::getNumericValue

(PHP 7)

IntlChar::getNumericValueGet the numeric value for a Unicode code point

说明

public static float IntlChar::getNumericValue ( mixed $codepoint )

Gets the numeric value for a Unicode code point as defined in the Unicode Character Database.

For characters without any numeric values in the Unicode Character Database, this function will return float (-123456789).

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

Numeric value of codepoint, or float (-123456789) if none is defined.

范例

Example #1 Testing different code points

<?php
var_dump
( IntlChar :: getNumericValue ( "4" ));
var_dump ( IntlChar :: getNumericValue ( "x" ));
var_dump ( IntlChar :: getNumericValue ( "\u{216C}" ));
?>

以上例程会输出:

float(4)
float(-123456789)
float(50)
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