image to server

function insert_image($inserted_product, $product_id){
 
	$image_url = $inserted_product["url"];
	$image_types = array("jpg", "jpeg", "png", "gif", "bmp");
 
	$file_extension = end(explode(".", $inserted_product["image"]));	
 
	switch($file_extension){
		case "jpeg":
			$image_source = imagecreatefromjpeg($image_url);
		break;
		case "jpg":
			$image_source = imagecreatefromjpeg($image_url);
		break;
		case "gif":
			$image_source = imagecreatefromgif($image_url);
		break;
		case "png":
			$image_source = imagecreatefrompng($image_url);
		break;
		case "bmp":
			$image_source = imagecreate($image_url);
		break;
	}
 
	$color_compression = 65;
 
	$bigger_image_size = getimagesize($image_source);
	$org_width = $bigger_image_size[0];
	$org_height = $bigger_image_size[1];
 
	$widthSmall = 75;
	$heightSmall = ($widthSmall / $org_width) * $org_height;
 
	$widthBigger = 250;
	$heightBigger = ($widthBigger / $org_width) * $org_height;
 
	$dir = '../shops/'.$inserted_product["shop_id"].'/products/'.$product_id.'/';
	create_folder($dir);
 
	$small_path = $dir.$inserted_product["slug"].'_lille.jpg';
	$bigger_path = $dir.$inserted_product["slug"].'_stor.jpg';
 
	$small_image = imagecreatetruecolor($widthSmall, $heightSmall);
	$bigger_image = imagecreatetruecolor($widthBigger, $heightBigger);
 
	imagecopyresampled($small_image, $image_source, 0, 0, 0, 0, $widthSmall, $heightSmall, $org_width, $org_height);
	imagecopyresized($bigger_image, $image_source, 0, 0, 0, 0, $widthBigger, $heightBigger, $org_width, $org_height);
 
	imagejpeg($small_image, $small_path, $color_compression);
	imagejpeg($bigger_image, $bigger_path, $color_compression);
}
 
function create_folder($path) {
	$structure = explode("/", $path);
	$lastPath = '';
 
	foreach ($structure as $folder) {
		if ($lastPath) {
			$folder = $lastPath.'/'.$folder;
		}
 
		if (!is_dir($folder)) {
			mkdir($folder);
			chmod($folder, 0755);
		}
 
		$lastPath = $folder;
	}
}