PHP 7.1.24 Released

IntlChar::getNumericValue

(PHP 7)

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

説明

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 IntlChar::NO_NUMERIC_VALUE.

パラメータ

codepoint

コードポイントを表す integer 型の値 (例: U+2603 SNOWMAN を表す 0x2603)、あるいは UTF-8 文字列としてエンコードされた文字 (例: "\u{2603}")。

返り値

Numeric value of codepoint, or IntlChar::NO_NUMERIC_VALUE if none is defined. This constant was added in PHP 7.0.6, prior to this version the literal value (float)-123456789 may be used instead.

例1 さまざまなコードポイントの例

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

上の例の出力は以下となります。

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