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(PHP 7)
IntlChar::getNumericValue — Get the numeric value for a Unicode code point
$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).
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}")
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)