PHP Decode

<?php 
function resizeImage($resourceType,$image_width,$image_height,$resizeWidth,$resizeHeight) { 
    // $resizeWidth = 100; 
    // $resizeHeight = 100; 
    $imageLayer = imagecreatetruecolor($resizeWidth,$resizeHeight); 
    imagecopyresampled($imageLayer,$resourceType,0,0,0,0,$resizeWidth,$resizeHeight, $image_width,$image_height); 
    return $imageLayer; 
} 
 
 
    } 
if(isset($_POST["form_submit"])) { 
	$imageProcess = 0; 
    if(is_array($_FILES)) { 
        // $new_width = $_POST['new_width']; 
        // $new_height = $_POST['new_height']; 
        $fileName = $_FILES['upload_image']['tmp_name']; 
        $sourceProperties = getimagesize($fileName); 
        $resizeFileName = time(); 
        $uploadPath = "./uploads/"; 
        $fileExt = pathinfo($_FILES['upload_image']['name'], PATHINFO_EXTENSION); 
        $uploadImageType = $sourceProperties[2]; 
        $sourceImageWidth = $sourceProperties[0]; 
        $sourceImageHeight = $sourceProperties[1]; 
        switch ($uploadImageType) { 
            case IMAGETYPE_JPEG: 
                $resourceType = imagecreatefromjpeg($fileName);  
                $imageLayer = resizeImage($resourceType,$sourceImageWidth,$sourceImageHeight,$new_width,$new_height); 
                imagejpeg($imageLayer,$uploadPath."192x192".$resizeFileName.'.'. $fileExt); 
                break; 
 
            case IMAGETYPE_GIF: 
                $resourceType = imagecreatefromgif($fileName);  
                $imageLayer = resizeImage($resourceType,$sourceImageWidth,$sourceImageHeight,$new_width,$new_height); 
                imagegif($imageLayer,$uploadPath."thump_".$resizeFileName.'.'. $fileExt); 
                break; 
 
            case IMAGETYPE_PNG: 
                $resourceType = imagecreatefrompng($fileName);  
                $imageLayer = resizeImage($resourceType,$sourceImageWidth,$sourceImageHeight,$new_width,$new_height); 
                imagepng($imageLayer,$uploadPath."thump_".$resizeFileName.'.'. $fileExt); 
                break; 
 
            default: 
                $imageProcess = 0; 
                break; 
        } 
        move_uploaded_file($fileName, $uploadPath. $resizeFileName. ".". $fileExt); 
        $imageProcess = 1; 
	if($imageProcess == 1){ 
	?>