# Parle\Parser::validate

(PECL parle >= 0.5.1)

Parle\Parser::validate — Validate input

### Description

public Parle\Parser::validate ( string `$data` , Parle\Lexer `$lexer` ) : bool

Validate an input string. The string is parsed internally, thus this method is useful for the quick input validation.

### Parameters

`data`

  String to be validated.

`lexer`

  A lexer object containing the lexing rules prepared for the particular grammar.

### Return Values

Returns bool witnessing whether the input chimes or not with the defined rules.