IntlChar::isIDIgnorable
(PHP 7)
IntlChar::isIDIgnorable — Check if code point is an ignorable character
说明
Determines if the specified character should be regarded as an ignorable character in an identifier.
TRUE
for characters with general category "Cf" (format controls) as well as non-whitespace ISO controls (U+0000..U+0008, U+000E..U+001B, U+007F..U+009F).
Note:
Note that Unicode just recommends to ignore Cf (format controls).
参数
返回值
Returns TRUE
if
codepoint
is ignorable in identifiers, FALSE
if not.
范例
Example #1 Testing different code points
<?php
var_dump(IntlChar::isIDIgnorable("A"));
var_dump(IntlChar::isIDIgnorable(" "));
var_dump(IntlChar::isIDIgnorable("\u{007F}"));
?>
以上例程会输出:
bool(false) bool(false) bool(true)
参见
- IntlChar::isIDStart() - Check if code point is permissible as the first character in an identifier
- IntlChar::isIDPart() - Check if code point is permissible in an identifier
IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT