<?php
	error_reporting(E_ALL);
	

	if (!isset($_GET["url"])) {
		die();
	}
	
	$width = (int) (@$_GET["w"]? $_GET["w"] : 10000);
	$height = (int) (@$_GET["h"]? $_GET["h"] : 10000);
	$filename = $f = str_replace("..", "", str_replace("/Small/", "/", $_GET["url"]));
	//$f = $_SERVER["DOCUMENT_ROOT"].$f;
	
	//Image directory
	$image_dir = $_SERVER["DOCUMENT_ROOT"]."/Projects/Stationery/Images_catalog/";
	$preview_dir = $_SERVER["DOCUMENT_ROOT"]."/Projects/Stationery/Images_catalog/Small/";
	
	$dot_pos = strrpos( $filename, '.' );
	$slash_pos = strrpos($filename, '/') + 1;
	
	$extension = ( $dot_pos != FALSE ) ? substr( $filename, $dot_pos ) : '.ext';
	$original_filename = substr( $filename, $slash_pos, $dot_pos - $slash_pos );
	
	if (!$original_filename) {
		die();
	}
	
	$new_filename = str_replace('/',"_", $original_filename).$extension;


	$src = @imagecreatefromjpeg($f);
	$ext = '.jpg';
	
	if (!$src) {
		$src = @imagecreatefromgif($f);
		$ext = '.gif';
	}
	if (!$src) {
		$src = @imagecreatefrompng($f);
		$ext = '.png';
	}

	if ($src)	{
		$w_src = imagesx($src); 
		$h_src = imagesy($src);
	  
		if ($w_src > $width) {
			// Вычисление пропорций
			$ratio = $w_src/$width; 
			$w_dest = round($w_src/$ratio); 
			$h_dest = round($h_src/$ratio); 
			if ($h_dest > $height){
				$ratio = $h_dest/$height;
				$w_dest = round($w_dest/$ratio); 
				$h_dest = round($h_dest/$ratio); 
			}
		}
		else {
			$w_dest = $w_src;
			$h_dest = $h_src;
		}
		
		//Пустая картинка 
		$dest = imagecreatetruecolor($w_dest, $h_dest); 
		
		if($ext=='.gif') { 
			imagealphablending($src, false);
			$ct = @imagecolortransparent($src);
			$color_tran = @imagecolorsforindex($src, $ct);
	
			if($color_tran) {
				
				$ct2 = imagecolorexact($dest, $color_tran['red'], $color_tran['green'], $color_tran['blue']);
				imagefill($dest,0,0,$ct2);
			}


			/**
			* Определяем функцию, которой будет выполнен ресайз изображения
			*/
			$sResizeFunction = 'imagecopyresampled';
			if(!function_exists($sResizeFunction)) $sResizeFunction = 'imagecopyresized';
			if(isset($ct) and $ct!=-1) $sResizeFunction = 'imagecopyresized';
										
			if(!@$sResizeFunction($dest,$src,0,0,0,0,$w_dest, $h_dest, $w_src, $h_src)) {
				imagedestroy($dest);
				return false;
			}
		
			imagesavealpha($dest, true);
			if(isset($ct2)) imagecolortransparent($dest, $ct2);
		} else {
			/**
			* Регулируем альфа-канал, если не указано обработное
			*/
			if($alfa) {
				@imagesavealpha($dest,true);
				@imagealphablending($dest,false);
			}
		
			if(!@imagecopyresampled($dest,$src,0,0,0,0,$w_dest, $h_dest, $w_src, $h_src)) {
				imagedestroy($dest);
				return false;
			}		
		}

		if ($ext == '.jpg') {
			header("Content-type: image/jpeg");
			imagejpeg($dest, $preview_dir.$new_filename, 90);
			imagejpeg($dest, null, 90);
		}
		elseif ($ext == '.gif') {
			header("Content-type: image/gif");
			imagegif($dest, $preview_dir.$new_filename);
			imagegif($dest);
		}
		elseif ($ext == '.png') {
			header("Content-type: image/png");
			imagepng($dest, $preview_dir.$new_filename);
			imagepng($dest);
		}
		
		imagedestroy($dest);
		imagedestroy($src);
	}

?>