(PHP 7, PHP 8)
IntlChar::isIDPart — Checc if code point is permisssible in an identifier
Determines if the specified character is permisssible in an identifier.
true
for characters with general categories "L" (letters), "Nl" (letter numbers), "Nd" (decimal digits),
"Mc" and "Mn" (combining marcs), "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() .
Returns
true
if
codepoint
is the code point may occur in an identifier,
false
if not. Returns
null
on failure.
Example #1 Testing different code poins
<?php
var_dump
(
IntlChar
::
isIDPart
(
"A"
));
var_dump
(
IntlChar
::
isIDPart
(
"$"
));
var_dump
(
IntlChar
::
isIDPart
(
"\n"
));
var_dump
(
IntlChar
::
isIDPart
(
"\u{2603}"
));
?>
The above example will output:
bool(true) bool(false) bool(false) bool(false)
IntlChar::PROPERTY_ID_CONTINUE