PHP code example of macfja / lexer-expression

1. Go to this page and download the library: Download macfja/lexer-expression library. Choose the download type require.

2. Extract the ZIP file and open the index.php.

3. Add this code to the index.php. 
    
        
<?php
require_once('vendor/autoload.php');

/* Start to develop here. Best regards https://php-download.com/ */

macfja / lexer-expression example snippets


use \Doctrine\ORM\Query\Lexer;

$dql = 'SELECT u FROM User u WHERE u.id = MAX(5, 7)';
$lexer = new Lexer($dql);
$sy = new ShuntingYard();
$sy->setLexer($lexer);
$sy->setOpenParenthesis(Lexer::T_OPEN_PARENTHESIS);
$sy->setCloseParenthesis(Lexer::T_CLOSE_PARENTHESIS);
$sy->setOperators(array(
    new ShuntingYardOperator(Lexer::T_MAX,    10, ShuntingYardOperator::ASSOCIATIVITY_LEFT),
    new ShuntingYardOperator(Lexer::T_SELECT, 10, ShuntingYardOperator::ASSOCIATIVITY_LEFT),
    new ShuntingYardOperator(Lexer::T_FROM,   10, ShuntingYardOperator::ASSOCIATIVITY_LEFT),
    new ShuntingYardOperator(Lexer::T_WHERE,  2,  ShuntingYardOperator::ASSOCIATIVITY_LEFT),
    new ShuntingYardOperator(Lexer::T_DOT,    10, ShuntingYardOperator::ASSOCIATIVITY_LEFT),
    new ShuntingYardOperator(Lexer::T_EQUALS, 10, ShuntingYardOperator::ASSOCIATIVITY_LEFT)
));
$sy->setArgumentSeparator(Lexer::T_COMMA);
var_dump($sy->parse());