(PHP 7)
IntlChar::getNumericValue — Get the numeric value for a Unicode code point
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).
Numeric value of codepoint
,
or float(-123456789) if none is defined.
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)