IntlChar::isIDPart
PHP function
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(PHP 7, PHP 8)
Check if code point is permissible in an identifier
Description
IntlChar::isIDPart(int|string $codepoint): bool|null
Determines if the specified character is permissible in an identifier.
true for characters with general categories "L" (letters), "Nl" (letter numbers), "Nd" (decimal digits), "Mc" and "Mn" (combining marks), "Pc" (connecting punctuation), and u_isIDIgnorable(c).
Note
This is almost the same as Unicode's ID_Continue (IntlChar::PROPERTY_ID_CONTINUE) except that Unicode recommends to ignore Cf which is less than IntlChar::isIDIgnorable().
Parameters
codepointParameter
Return Values
Returns true if codepoint is the code point may occur in an identifier, false if not. Returns null on failure.
Examples
Example
php
<?php
var_dump(IntlChar::isIDPart("A"));
var_dump(IntlChar::isIDPart("$"));
var_dump(IntlChar::isIDPart("\n"));
var_dump(IntlChar::isIDPart("\u{2603}"));
?>The above example will output:
output
bool(true)
bool(false)
bool(false)
bool(false)See Also
IntlChar::isIDIgnorable()IntlChar::isIDStart()IntlChar::PROPERTY_ID_CONTINUE