src/text/tokenizer/TextTokenizer.php
public function id()
    {
        $ret = false;

        if (list($id) = $this->match(TextTokenizer::IDENTIFIER)) {
            $ret = array($id);
        }

        return $ret;
    }
public function id()
    {
        $ret = false;

        if (list($id) = $this->match(TextTokenizer::IDENTIFIER)) {
            $ret = array($id);
        }

        return $ret;
    }
public function id ( ) { $ ret = false ; if ( list ( $ id ) = $ this -> match ( TextTokenizer :: IDENTIFIER ) ) { $ ret = array ( $ id ) ; } return $ ret ; }
Is the next token an identifier?

This function returns false if the next token is not an identifier or an
array with a single string.

@return false|array of a single string
Is the next token an identifier?