如何在获取变量的当前时间和日期后设置jpeg扩展名？

Question

I am uploading an image to a folder name "upload". Then I am changing the name and extension of the image. I am getting the current time and date with default time zone now I am trying to set the image extension to "jpeg" after the getted date and time I was tried but is not given result I put my code here

I suppose when I upload image at that time my file name is "NEWYORK.JPG" But after upload the image I want to change the file name is "9/10/2012/05:31:15.jpeg" from get the current time and date set default time zone.

date_default_timezone_set('Asia/Kolkata');
$imagename = date('d/m/Y-h:i:s', time());
$imagename=basename($imagename,".jpg");
echo $filename = $imagename;
$upload   = $_FILES['ctgimage'];
$target_path = "upload/";

 echo $target_path .= $filename . "." . path_info($upload["name"], PATHINFO_EXTENSION);
  if(move_uploaded_file($upload["tmp_name"],$target_path))
  {
          echo "uploaded successfully";           $cname=$_POST['ctgname'];
          mysql_query("insert into category(ctg_name,ctgimage) 
               values('$cname','$target_path')");

  }

Answer 1

Some Errors

• It should be pathinfo not path_info
• Use a valid File name like d-m-Y for folder h.i.s for file
• Too many Duplication
• Avoid SQL Injection by escaping

Example :

date_default_timezone_set('Asia/Kolkata');

$target_path = "upload/";
$imageDir = date('d-m-Y', time());
$imageName = date('h.i.s', time());

$upload = $_FILES['ctgimage'];
$uploadExtention = pathinfo($upload["name"], PATHINFO_EXTENSION);

if (! is_dir($target_path . "/" . $imageDir)) {
    mkdir($target_path . "/" . $imageDir);
}

$target_path = "$target_path/$imageDir/$imageName.$uploadExtention";
$cname = mysql_real_escape_string($_POST['ctgname']);

if (move_uploaded_file($upload["tmp_name"], $target_path)) {
    echo "uploaded successfully";

    mysql_query("insert into category(ctg_name,ctgimage)
    values('$cname','$target_path')");
}

PHP DOC on mysql_*****

Use of this extension is discouraged. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include: