©
이 문서에서는 PHP 중국어 웹사이트 매뉴얼 풀어 주다
(PHP 7)
IntlChar::isIDPart — Check if code point is permissible in an identifier
$codepoint
)Determines if the specified character is permissible in an identifier.
TRUE
for characters with general categories "L" (letters), "Nl" (letter numbers), "Nd" (decimal digits),
"Mc" and "Mn" (combining marks), "Pc" (connecting punctuation), and u_isIDIgnorable(c).
Note:
This is almost the same as Unicode's ID_Continue (
IntlChar::PROPERTY_ID_CONTINUE
) except that Unicode recommends to ignore Cf which is less than IntlChar::isIDIgnorable() .
codepoint
The integer codepoint value (e.g. 0x2603 for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g. "\u{2603}")
Returns TRUE
if
codepoint
is the code point may occur in an identifier, FALSE
if not.
Example #1 Testing different code points
<?php
var_dump ( IntlChar :: isIDPart ( "A" ));
var_dump ( IntlChar :: isIDPart ( "$" ));
var_dump ( IntlChar :: isIDPart ( "\n" ));
var_dump ( IntlChar :: isIDPart ( "\u{2603}" ));
?>
以上例程会输出:
bool(true) bool(false) bool(false) bool(false)
IntlChar::PROPERTY_ID_CONTINUE