(PHP 8)
PhpToken::is — Tells whether the token is of given kind.
$kind): bool
   Tells whether the token is of given kind.
  
kindEither a single value to match the token's id or textual content, or an array thereof.
A boolean value whether the token is of given kind.
示例 #1 PhpToken::is() example
<?php
$token = new PhpToken(T_ECHO, 'echo');
var_dump($token->is(T_ECHO));        // -> bool(true)
var_dump($token->is('echo'));        // -> bool(true)
var_dump($token->is(T_FOREACH));     // -> bool(false)
var_dump($token->is('foreach'));     // -> bool(false)
示例 #2 Usage with array
<?php
function isClassType(PhpToken $token): bool {
    return $token->is([T_CLASS, T_INTERFACE, T_TRAIT]);
}
$interface = new PhpToken(T_INTERFACE, 'interface');
var_dump(isClassType($interface));   // -> bool(true)
$function = new PhpToken(T_FUNCTION, 'function');
var_dump(isClassType($function));    // -> bool(false)