Plugin not working

Look at this code:

PHP:

<?php

/*
__PocketMine Plugin__
author=PEMapModder
name=GitBackup
description=Needs Git be installed in the computer
apiversion=10,11,12
version=ALPHA
class=BackupGitPlugin
*/
//Alpha_1.3.10 or above for LevelAPI::getAll()
class BackupGitPlugin implements Plugin{
    public $datcfg, $dat;
    public function __construct(ServerAPI $api, $s=0){}
    public function __destruct(){
        $this->datcfg->setAll($this->dat);
    }
    public function init(){
        $a=ServerAPI::request()->api;
        $p=$a->plugin;
        $c=$a->console;
        $path=$p->configPath($this)."memory";
        if(file_exists($path)){
            $this->datcfg=new Config($path, CONFIG_YAML);
            $this->dat=$this->datcfg->getAll();
        }
        else{
            $this->dat=array(
                "inited"=>false,
                "remotes"=>array()
            );
            $this->datcfg=new Config($path, CONFIG_YAML, $this->dat);
        }
        $c->register("git", "<subcmd> [args] Git backup (console only)", array($this, "cmd"));
        if(!$this->dat["inited"]===false)
            exec("git init");
        @mkdir(FILE_PATH."git_worlds/");
    }
    public function cmd($c, $a, $i){
        if($i!=="console")
            return "Please run this command on-console.";
        switch(strtolower($a[0])){
            case "remote":
                if($a===array("remote")){
                    $ret="Remote list:\n";
                    foreach($this->dat["remotes"] as $name=>$link){
                        $ret.="    $name: $link";
                    }
                    return $ret;
                }
                if(count($a)!==3)
                    return "Usage: /git remote <name> <HTTP/SSH>";
                $this->dat["remotes"][$a[1]]=$a[2];
                break;
            case "addworlds":
                console("[NOTICE] Creating worlds backup...");
                foreach(ServerAPI::request()->api->level->getAll() as $level){
                    $out=FILE_PATH."git_worlds/".$level->getName()."/";
                    $in=FILE_PATH."worlds/".$level->getName()."/";
                    $inDir=dir($in);
                    @unlink($out);
                    @mkdir($out);
                    while(false!==($filename=$inDir->read())){
                        if(is_file($in.$filename)){
                            file_put_contents($out.$filename, file_get_contents($in.$filename));
                        }
                    }
                    $inDir->close();
                    $out.="chunks/";
                    $in.="chunks/";
                    $inDir=dir($in);
                    while(false!==($filename=$inDir->read())){
                        if(is_file($in.$filename)){
                            file_put_contents($out.$filename, file_get_contents($in.$filename));
                        }
                    }
                    console(FORMAT_GREEN."[DEBUG] Copied level ".$level->getName());
                }
                console("[NOTICE] Finished creating world backup");
                $msg="";
                exec("git add git_worlds/*", $msg);
                console($msg);
                exec("git commit -m \"".(isset($a[1]) and $a[1]!=""?$a[1]:"world adding")."\"", $msg);
                console($msg);
                break;
            case "addplugins":
                $this->duplicateFolder("plugins/");
            case "push":
                if(count($a!=2))
                    return "Usage: /git push <remote name>";
                if(!isset($this->dat["remotes"][$a[1]]))
                    return "Remote ".$a[1]." not found";
                $path=$p->configPath($this)."temp";
                file_put_contents($path, "");
                $subpath=trim($path, FILE_PATH);
                exec("git push -u \"".$this->dat["remotes"][$a[1]]."\" master > /$subpath &");
                return "Pushing worlds. Result at $path.";
            default:
                return "Command /git ".$a[0]."doesn't exist.";
        }
    }
    public function duplicateFolder($inSubpath){
        $inSubpath=trim($inSubpath, FILE_PATH);
        if(substr($inSubpath, -1)!=="/")$inSubpath.="/";
        $out=FILE_PATH."git_".$inSubpath;
        if(!is_dir($inSubpath))
            return false;
        $inDir=dir(FILE_PATH.$inSubpath);
        while(false!==($filename=$inDir->read())){
            if(is_file($in.$filename))
                file_put_contents($out.$filename, file_get_contents($in.$filename));
            elseif(strpos($filename, ".")===false){
                $this->duplicateFolder($in.$filename);
            }
        }
        $inDir->close();
        return true;
    }
}


There are no crashes, but the code does not seem to be working...

Code:

<?php

/*
__PocketMine Plugin__
author=PEMapModder
name=GitBackup
description=Needs Git be installed in the computer
apiversion=10,11,12
version=ALPHA
class=BackupGitPlugin
*/
//Alpha_1.3.10 or above for LevelAPI::getAll()
class BackupGitPlugin implements Plugin{
    public $datcfg, $dat;
    public function __construct(ServerAPI $api, $s=0){}
    public function __destruct(){
        $this->datcfg->setAll($this->dat);
    }
    public function init(){
        $a=ServerAPI::request()->api;
        $p=$a->plugin;
        $c=$a->console;
        $path=$p->configPath($this)."memory";
        if(file_exists($path)){
            $this->datcfg=new Config($path, CONFIG_YAML);
            $this->dat=$this->datcfg->getAll();
        }
        else{
            $this->dat=array(
                "inited"=>false,
                "remotes"=>array()
            );
            $this->datcfg=new Config($path, CONFIG_YAML, $this->dat);
        }
        $c->register("git", "<subcmd> [args] Git backup (console only)", array($this, "cmd"));
        if(!$this->dat["inited"]===false)
            exec("git init");
        @mkdir(FILE_PATH."git_worlds/");
    }
    public function cmd($c, $a, $i){
        if($i!=="console")
            return "Please run this command on-console.";
        if(isset($a[0])){
            switch(strtolower($a[0])){
                case "remote":
                    if($a===array("remote")){
                        $ret="Remote list:\n";
                        foreach($this->dat["remotes"] as $name=>$link){
                            $ret.="    $name: $link";
                        }
                        return $ret;
                    }
                    if(count($a)!==3)
                        return "Usage: /git remote <name> <HTTP/SSH>";
                    $this->dat["remotes"][$a[1]]=$a[2];
                    break;
                case "addworlds":
                    console("[NOTICE] Creating worlds backup...");
                    foreach(ServerAPI::request()->api->level->getAll() as $level){
                        $out=FILE_PATH."git_worlds/".$level->getName()."/";
                        $in=FILE_PATH."worlds/".$level->getName()."/";
                        $inDir=dir($in);
                        @unlink($out);
                        @mkdir($out);
                        while(false!==($filename=$inDir->read())){
                            if(is_file($in.$filename)){
                                file_put_contents($out.$filename, file_get_contents($in.$filename));
                            }
                        }
                        $inDir->close();
                        $out.="chunks/";
                        $in.="chunks/";
                        $inDir=dir($in);
                        while(false!==($filename=$inDir->read())){
                            if(is_file($in.$filename)){
                                file_put_contents($out.$filename, file_get_contents($in.$filename));
                            }
                        }
                        console(FORMAT_GREEN."[DEBUG] Copied level ".$level->getName());
                    }
                    console("[NOTICE] Finished creating world backup");
                    $msg="";
                    exec("git add git_worlds/*", $msg);
                    console($msg);
                    exec("git commit -m \"".(isset($a[1]) and $a[1]!=""?$a[1]:"world adding")."\"", $msg);
                    console($msg);
                    break;
                case "addplugins":
                    $this->duplicateFolder("plugins/");
                case "push":
                    if(count($a!=2))
                        return "Usage: /git push <remote name>";
                    if(!isset($this->dat["remotes"][$a[1]]))
                        return "Remote ".$a[1]." not found";
                    $path=$p->configPath($this)."temp";
                    file_put_contents($path, "");
                    $subpath=trim($path, FILE_PATH);
                    exec("git push -u \"".$this->dat["remotes"][$a[1]]."\" master > /$subpath &");
                    return "Pushing worlds. Result at $path.";
                default:
                    return "Command /git ".$a[0]."doesn't exist.";
            }
        }else{
        return "You can ues remote,addworlds,addplugins,push.";
        }
    }
    public function duplicateFolder($inSubpath){
        $inSubpath=trim($inSubpath, FILE_PATH);
        if(substr($inSubpath, -1)!=="/")$inSubpath.="/";
        $out=FILE_PATH."git_".$inSubpath;
        if(!is_dir($inSubpath))
            return false;
        $inDir=dir(FILE_PATH.$inSubpath);
        while(false!==($filename=$inDir->read())){
            if(is_file($in.$filename))
                file_put_contents($out.$filename, file_get_contents($in.$filename));
            elseif(strpos($filename, ".")===false){
                $this->duplicateFolder($in.$filename);
            }
        }
        $inDir->close();
        return true;
    }
}

I think I can help you.

How to ues GitHub API?

Works for all Git servers?