# Parle\Lexer::push

(PECL parle >= 0.5.1)

Parle\Lexer::push — Add a lexer rule

### Descripción

public Parle\Lexer::push(string `$regex`, int `$id`): void

Push a pattern for lexeme recognition.

### Parámetros

`regex`

  Regular expression used for token matching.

`id`

  Token id. If the lexer instance is meant to be used standalone, this can be an arbitrary number. If the lexer instance is going to be passed to the parser, it has to be an id returned by Parle\Parser::tokenid().

### Valores devueltos

No devuelve ningún valor.