IntlChar::isIDIgnorable
(PHP 7, PHP 8)
IntlChar::isIDIgnorable — Check if code point is an ignorable character
Description
public static IntlChar::isIDIgnorable(int|string
$codepoint): ?boolDetermines 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).
Parameters
-
codepoint -
The int codepoint value (e.g.
0x2603for U+2603 SNOWMAN), or the character encoded as a UTF-8 string (e.g."\u")
Return Values
Returns true if
codepoint is ignorable in identifiers, false if not. Returns null on failure.
Examples
Example #1 Testing different code points
<?php
var_dump(IntlChar::isIDIgnorable("A"));
var_dump(IntlChar::isIDIgnorable(" "));
var_dump(IntlChar::isIDIgnorable("\u"));
?>
The above example will output:
bool(false) bool(false) bool(true)
See Also
- 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
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