Rewrite Your Localconf before updating to 6.2 (Get Rid of incompatibel extensions)

rewriteLocalconf45.php

#!/usr/bin/php
<?php

class ConfigManager {

    var $lines;
    var $pathFilename;
    var $uninstallExtensions;

    public function __construct(){

        $this->setHeader();

    }

    public function uninstallExtensions($arr){

        if (!is_array($arr)){
            return FALSE;
        }

        if (isset($GLOBALS['TYPO3_CONF_VARS']['EXT']['extList'])){

            $extListValues = explode(",",$GLOBALS['TYPO3_CONF_VARS']['EXT']['extList']);
            if (is_array($extListValues)){
                $extListKeys=array_flip($extListValues);

           }

        }

        if (isset($GLOBALS['TYPO3_CONF_VARS']['EXT']['extList_FE'])){

            $extListFEValues = explode(",",$GLOBALS['TYPO3_CONF_VARS']['EXT']['extList_FE']);
            if (is_array($extListFEValues)){
                $extListFEKeys=array_flip($extListFEValues);

            }

        }


        foreach ($arr as $ext){

            if (isset($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][$ext])){
                unset($GLOBALS['TYPO3_CONF_VARS']['EXT']['extConf'][$ext]);
            }

            if (isset($extListKeys[$ext])){
                unset($extListKeys[$ext]);
            }

            if (isset($extListFEKeys[$ext])){
                unset($extListFEKeys[$ext]);
            }

        }

        if (isset($GLOBALS['TYPO3_CONF_VARS']['EXT']['extList'])){
           $GLOBALS['TYPO3_CONF_VARS']['EXT']['extList'] = implode(",",array_keys($extListKeys));
        }

        if (isset($GLOBALS['TYPO3_CONF_VARS']['EXT']['extList_FE'])){
           $GLOBALS['TYPO3_CONF_VARS']['EXT']['extList_FE'] = implode(",",array_keys($extListFEKeys));
        }



    }


    public function setPathFilename($pathFile){

        $this->pathFilename = $pathFile;

    }

    private function getPathFilename(){

        return $this->pathFilename;

    }

    private function setHeader(){

        $this->setLine('<?php');
        $this->setLine("if (!defined ('TYPO3_MODE')) {");
        $this->setLine("        die ('Access denied.');");
        $this->setLine('}');

    }
    
        private function setFooter(){

        $this->setLine('?>');

    }

    public function setLine($line){
        $this->lines[] = $line;
    }

    public function analyzeT3ConfVar($key){


        $this->flatten($key);

    }

    /**
     * a bit ugly, but works
     **/

    public function flatten($key){

        if (is_array($GLOBALS[$key])){

            foreach (array_keys($GLOBALS[$key]) as $key_sub){

                if (is_array($GLOBALS[$key][$key_sub])){

                    foreach (array_keys($GLOBALS[$key][$key_sub]) as $key_sub_sub){

                        if (is_array($GLOBALS[$key][$key_sub][$key_sub_sub])){

                            foreach (array_keys($GLOBALS[$key][$key_sub][$key_sub_sub]) as $key_sub_sub_sub){
                                $this->setLine('$'.$key."['".$key_sub."']['".$key_sub_sub."']['".$key_sub_sub_sub."'] = '".$GLOBALS[$key][$key_sub][$key_sub_sub][$key_sub_sub_sub]."';");
                            }
                        }
                        else {
                            $this->setLine('$'.$key."['".$key_sub."']['".$key_sub_sub."'] = '".$GLOBALS[$key][$key_sub][$key_sub_sub]."';");
                        }
                    }

                }
                else {
                    $this->setLine('$'.$key."['".$key_sub."'] = '".$GLOBALS[$key][$key_sub]."';");
                }
            }


        }
        else {
            $this->setLine('$'.$key." = '".$GLOBALS[$key]."';");
        }

    }


    public function output(){

        $this->setFooter();
        $fp=fopen($this->getPathFilename().".rewritten","w");
        fwrite($fp,implode("\n",$this->lines));
        fclose ($fp);

    }


}

$options = getopt("",array('path:','uninstall::'));
$uninstallExtensions = array();

if (sizeof($options) == 0){
   print "Required: --path=/path/to/typo3/installation/\n";
   print "Example: ./rewriteLocalconf45.php --path=/path/to/typo3/installation --uninstall=cssspamprotect,cag_relatedcontent,t3quixplorer";
   print "Sorry. Giving up \n";
   exit;
}

$path = $options["path"];

if (isset($options['uninstall'])){
    $uninstallExtensions=explode(",",$options["uninstall"]);

}


if (!is_dir($path)){
   print "Sorry. ".$path." - directory does not exist !!\n";
   exit;
}

$pathLocalconf = $path."/typo3conf/localconf.php";

if (!file_exists($pathLocalconf)){
    print "Sorry. ".$pathLocalconf." - file does not exist !!\n";
    exit;
}

define('TYPO3_MODE','BE');
include_once($pathLocalconf);


$cf = new ConfigManager();
$cf->setPathFilename($pathLocalconf);
$cf->uninstallExtensions($uninstallExtensions);

foreach (array_keys($GLOBALS) as $key){
   if (substr($key,0,strlen('typo')) == 'typo'){
       $cf->setLine('$'.$key." = '".$GLOBALS[$key]."';");
   }
   elseif (substr($key,0,strlen('TYPO3_CONF_VARS')) == 'TYPO3_CONF_VARS'){
       $cf->analyzeT3ConfVar($key);
   }

}

echo "Creating ".$cf->getPathFilename().".rewritten\n";
$cf->output();