app上傳圖片藉口方法demo

function app_file_up() { if ((($_FILES["file"]["type"]=="image/gif")||($_FILES["file"]["type"]=="image/jpeg")||($_FILES["file"]["type"]== "image/pjpeg")||($_FILES["file"]["type"]=="image/png"))) {  if ($_FILES["file"]["error"] > 0){ return 0;  }  elseif($_FILES["file"]["size"] > 512000)  {  echo "The file ".basename( $_FILES['file']['name']). " is too lage";    return -1;  exit();  }  else  {  $type = 'jpg';  if($_FILES["file"]["type"] == "image/gif"){ $type = 'gif';  }  elseif($_FILES["file"]["type"] == "image/png")  { $type = 'png';  }  $destfile = "themes/tupian/".date('Y/md')."/".time().rand(0000,9999).'.'.$type;  $destfile_path="themes/tupian/".date('Y/md'); if(!file_exists($destfile_path))  { mkdir(str_replace('//','/',$destfile_path), 0755, true); }  move_uploaded_file($_FILES["file"]["tmp_name"],$destfile);  return $destfile;   } }else{  return 0; }   }