(PHP 7, PHP 8)
IntlChar::isIDPart — Check if code point is permissible in an identifier
$codepoint): ?boolDetermines if the specified character is permissible in an identifier.
true for characters with general categories "L" (letters), "Nl" (letter numbers), "Nd" (decimal digits),
"Mc" and "Mn" (combining marks), "Pc" (connecting punctuation), and u_isIDIgnorable(c).
Nota:
This is almost the same as Unicode's ID_Continue (
IntlChar::PROPERTY_ID_CONTINUE) except that Unicode recommends to ignore Cf which is less than IntlChar::isIDIgnorable().
codepointO valor int do ponto de código (por exemplo, 0x2603 para U+2603 SNOWMAN) ou o caractere codificado como uma string UTF-8 (por exemplo, "\u{2603}")
Returns true if
codepoint is the code point may occur in an identifier, false if not. Returns null on failure.
Exemplo #1 Testando diferentes pontos de código
<?php
var_dump(IntlChar::isIDPart("A"));
var_dump(IntlChar::isIDPart("$"));
var_dump(IntlChar::isIDPart("\n"));
var_dump(IntlChar::isIDPart("\u{2603}"));
?>
O exemplo acima produzirá:
bool(true) bool(false) bool(false) bool(false)
IntlChar::PROPERTY_ID_CONTINUE