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This document uses PHP Chinese website manual Release
(PHP 7)
IntlChar::isJavaIDPart — Check if code point is permissible in a Java identifier
$codepoint
)Determines if the specified character is permissible in a Java identifier.
In addition to IntlChar::isIDPart() , TRUE
for characters with general category "Sc" (currency symbols).
codepoint
The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")
Returns TRUE
if
codepoint
may occur in a Java identifier, FALSE
if not.
Example #1 Testing different code points
<?php
var_dump ( IntlChar :: isJavaIDPart ( "A" ));
var_dump ( IntlChar :: isJavaIDPart ( "$" ));
var_dump ( IntlChar :: isJavaIDPart ( "\n" ));
var_dump ( IntlChar :: isJavaIDPart ( "\u{2603}" ));
?>
以上例程会输出:
bool(true) bool(true) bool(false) bool(false)