PHP Decode

<?php 
 
require_once('config.php'); 
require_once('incl/main.php'); 
 
neutral_dbconnect(); $settings=get_settings(); 
$avsize=(int)$settings['avsize']; 
 
if(isset($_FILES['avupload']) && isset($_FILES['avupload']['size']) && isset($_POST['avatar']) && isset($_POST['stoken'])){ 
 
$stoken=explode('z',$_POST['stoken']); $id=(int)$stoken[0]; 
if(!isset($stoken[1]) || hash('sha256',$stoken[0].$settings['random_salt']) != $stoken[1]){die();} 
 
$avatar2db=''; $motto2db=''; $image_pro=0; 
 
$avatar_filename='attachments/avtr_'.substr(md5(time().microtime()),0,20); 
 
if(move_uploaded_file($_FILES['avupload']['tmp_name'],$avatar_filename)){ 
chmod("$avatar_filename",0666); $image_pro=1;} 
 
$maxsize=(int)$settings['avatar_msize']; 
 
if($image_pro==1 && filesize($avatar_filename)<$maxsize){$image_pro=2;} 
 
if($image_pro==2){ 
 
$smime=0; 
 
if(function_exists('finfo_open') && function_exists('finfo_file')){ 
$finfo=@finfo_open(FILEINFO_MIME_TYPE);$smime=@finfo_file($finfo,$avatar_filename);} 
elseif(function_exists('mime_content_type')){$smime=@mime_content_type($avatar_filename);} 
 
if($smime=='0'){ 
$unkext=explode('.',$_FILES['avupload']['name']); 
$unkext=strtolower(end($unkext)); 
switch($unkext){ 
case 'jpeg': $smime='image/jpeg'; break; 
case 'jpg' : $smime='image/jpeg'; break; 
case 'png' : $smime='image/png';  break; 
default    : $smime='unknown';    break;}} 
 
$extension=explode('/',$smime); 
if(isset($extension[1])){$ext=strtolower($extension[1]);} 
 
if(isset($ext) && ($ext=='jpg' || $ext=='jpeg' || $ext=='png')){ 
@rename($avatar_filename,$avatar_filename.'.'.$ext); 
$avatar_filename=$avatar_filename.'.'.$ext;  
 
// resize begin 
if(!isset($unkext) && function_exists('imagecreatefromjpeg') && function_exists('imagecreatefrompng')){ 
switch($ext){ 
case 'jpeg': function imgsrc($v){return imagecreatefromjpeg($v);} function imgdst($d,$f){return imagejpeg($d,$f);} break; 
case 'jpg' : function imgsrc($v){return imagecreatefromjpeg($v);} function imgdst($d,$f){return imagejpeg($d,$f);} break; 
case 'png' : function imgsrc($v){return imagecreatefrompng($v);}  function imgdst($d,$f){return imagepng($d,$f);}  break; 
default    : break;} 
 
if(function_exists('imgsrc') && function_exists('imgdst') && function_exists('imagecreatetruecolor') && function_exists('imagecopyresampled')){ 
$src=imgsrc($avatar_filename); list($width,$height)=getimagesize($avatar_filename); 
 
$offsetx=0;$offsety=0;$xwidth=$width;$xheight=$height; 
if($width>$height){$offsetx=round(($width-$height)/2);$xwidth=$width-$offsetx*2;} 
if($height>$width){$offsety=round(($height-$width)/2);$xheight=$height-$offsety*2;} 
 
$dst=imagecreatetruecolor($avsize,$avsize); 
imagealphablending($dst,false); imagesavealpha($dst,true); 
imagecopyresampled($dst,$src,0,0,$offsetx,$offsety,$avsize,$avsize,$xwidth,$xheight); 
imgdst($dst,$avatar_filename);}} 
// resize end 
 
$image_pro=3;}} 
 
if($image_pro<3){@unlink($avatar_filename);}else{$avatar2db=$avatar_filename;} 
 
if(strlen($_POST['avatar'])>5){ 
$avatar2db=neutral_escape($_POST['avatar'],50,'str'); 
if(!preg_match('/^([a-z0-9.\-\/\_]+)$/i',$avatar2db) || (strpos($avatar2db,'avatars/')!==0 && strpos($avatar2db,'attachments/')!==0) || !file_exists($avatar2db)){ 
$avatar2db='';}} 
 
if(isset($_POST['motto']) && strlen(trim($_POST['motto']))>0){$motto2db=neutral_escape($_POST['motto'],64,'str');} 
 
$curimg=neutral_query('SELECT image FROM '.$dbss['prfx'].'_uxtra WHERE id='.$id); 
$curimg=neutral_fetch_array($curimg); 
if(is_array($curimg) && isset($curimg[0]) && strpos($curimg[0],'attachments/')===0 && $curimg[0]!=$avatar2db){@unlink($curimg[0]);} 
 
neutral_query('DELETE FROM '.$dbss['prfx'].'_uxtra WHERE id='.$id); 
neutral_query('INSERT INTO '.$dbss['prfx']."_uxtra VALUES($id,'$avatar2db','$motto2db',0,'','','','','','','')"); 
 
if(isset($_POST['room'])){$room=(int)$_POST['room'];}else{$room=0;} 
redirect('blabax.php?room='.$room);die(); } 
 
// --------------- 
 
if(isset($_GET['list'])){ 
$list_pics=''; 
 
$mcache=neutral_query('SELECT value FROM '.$dbss['prfx']."_scache WHERE id='avt_cache'"); 
$mcache=neutral_fetch_array($mcache); $avt_cache=$mcache[0]; 
 
if(strlen($avt_cache)<1){$avt_set=array();} else{$avt_set=unserialize(base64_decode($avt_cache));} 
 
shuffle($avt_set); 
 
for($i=0;$i<count($avt_set);$i++){ 
 
$pic='<img src="avatars/'.$avt_set[$i].'" alt="" class="avatar_list" id="av'.$avt_set[$i].'" onclick="shoop(this,1,100);sel_avatar(\'avatars/'.$avt_set[$i].'\')"> '; 
$list_pics.=$pic; 
} 
print $list_pics;} 
 
?>