IntlChar::isIDIgnorable
PHP function
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(PHP 7, PHP 8)
Check if code point is an ignorable character
Description
IntlChar::isIDIgnorable(int|string $codepoint): bool|null
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).
Parameters
codepointParameter
Return Values
Returns true if codepoint is ignorable in identifiers, false if not. Returns null on failure.
Examples
Example
php
<?php
var_dump(IntlChar::isIDIgnorable("A"));
var_dump(IntlChar::isIDIgnorable(" "));
var_dump(IntlChar::isIDIgnorable("\u{007F}"));
?>The above example will output:
output
bool(false)
bool(false)
bool(true)See Also
IntlChar::isIDStart()IntlChar::isIDPart()IntlChar::PROPERTY_DEFAULT_IGNORABLE_CODE_POINT