PHP-Backporter snippet

convert.php

<?php
// git clone https://github.com/nikic/PHP-Backporter.git
// git submodule init
// git submodule update

// in PHPBackporter_Converter_Namespace, should change like below.
// $functionDataParser->parse(file_get_contents(dirname(__FILE__).'/../../../function.data')),

$file = $argv[1];

require_once dirname(__FILE__) . '/../PHP-Backporter/vendor/PHP-Parser/lib/PHPParser/Autoloader.php';
PHPParser_Autoloader::register();
require_once dirname(__FILE__) . '/../PHP-Backporter/lib/PHPBackporter/Autoloader.php';
PHPBackporter_Autoloader::register();


$factory = new PHPBackporter_Factory;

$parser        = new PHPParser_Parser;
$traverser     = $factory->getTraverser();
$prettyPrinter = new PHPParser_PrettyPrinter_Zend;

$stmts = $parser->parse(new PHPParser_Lexer(file_get_contents($file)));
$traverser->traverse($stmts);
$code = $prettyPrinter->prettyPrint($stmts);

file_put_contents($file, $code);