<?
	header('Content-type: image/jpeg');
	
	$imagem = $_GET["url"];
	$tam = GetImageSize($imagem);
	$tam_max=$_GET["tam"];
	
	if ($tam[0]>$tam[1] && $tam[0]<$_GET["tam"]){
		$tam_max=$tam[0];
	}
	if ($tam[1]>$tam[0] && $tam[1]<$_GET["tam"]){
		$tam_max=$tam[1];
	}
	if ($tam[1]==$tam[0] && $tam[1]<$_GET["tam"]){
		$tam_max=$tam[1];
	}
	$ancho_ant=$tam[0];
	$alto_ant=$tam[1];

	if($tam[0]>$tam[1]){  //si es mas ancha que alta
		$quocient=$tam_max/$tam[0];
		$tam[0]=$tam_max;
		$tam[1]=($tam[1]*$quocient);
	}
	if($tam[1]>$tam[0]){
		$quocient=$tam_max/$tam[1];
		$tam[1]=$tam_max;
		$tam[0]=($tam[0]*$quocient);
	}
	if ($tam[1]==$tam[0]){
		$tam[0]=$tam_max;
		$tam[1]=$tam_max;
	}

	function gdVersion($user_ver = 0){
	   if (! extension_loaded('gd')) { return; }
	   static $gd_ver = 0;
	   // Just accept the specified setting if it's 1.
	   if ($user_ver == 1) { $gd_ver = 1; return 1; }
	   // Use the static variable if function was called previously.
	   if ($user_ver !=2 && $gd_ver > 0 ) { return $gd_ver; }
	   // Use the gd_info() function if possible.
	   if (function_exists('gd_info')) {
		   $ver_info = gd_info();
		   preg_match('/\d/', $ver_info['GD Version'], $match);
		   $gd_ver = $match[0];
		   return $match[0];
	   }
	   // If phpinfo() is disabled use a specified / fail-safe choice...
	   if (preg_match('/phpinfo/', ini_get('disable_functions'))) {
		   if ($user_ver == 2) {
			   $gd_ver = 2;
			   return 2;
		   } else {
			   $gd_ver = 1;
			   return 1;
		   }
	   }
	   // ...otherwise use phpinfo().
	   ob_start();
	   phpinfo(8);
	   $info = ob_get_contents();
	   ob_end_clean();
	   $info = stristr($info, 'gd version');
	   preg_match('/\d/', $info, $match);
	   $gd_ver = $match[0];
	   return $match[0];
	}

	if (gdVersion()==2){
		$img_src=imagecreatefromjpeg($imagem);
		$img_dst=imagecreatetruecolor($tam[0], $tam[1]);
		imagecopyresampled($img_dst, $img_src, 0, 0, 0, 0, $tam[0], $tam[1], $ancho_ant, $alto_ant);
		imagejpeg($img_dst, $g_dstfile, 90);
		imagedestroy($img_dst);
	}

	if (gdVersion()==1){
		$img_origem = imagecreatefromjpeg($imagem);
		$img_destino = imagecreate($tam[0],$tam[1]);
		imagecopyresized($img_destino, $img_origem,0,0,0,0,$tam[0],$tam[1],imagesx ($img_origem),imagesy($img_origem));
		imageJPEG($img_destino,'',90);
	}
?>