IntlChar::getNumericValue
(PHP 7, PHP 8)
IntlChar::getNumericValue — Get the numeric value for a Unicode code point
说明
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
.
参数
-
codepoint
-
The int 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 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.
范例
示例 #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)