How to rename Image's name

[pote86]

I would like to know that how to rename the uploaded image's name which need to be unique in the file. The follow is my PHP code

<?php session_start();
include ("check_session_user.php");
//connect to database server
$link = mysql_connect("localhost","root","");
//connect to database
$dbconnect = mysql_select_db("supportdb",$link);

//send user input data to database        
$result = $_POST['TicketNumber'];
$NameOfRequestor = $_POST['NameOfRequestor'];
$NameOfRequestor = str_replace("'","''",$NameOfRequestor);
$Department = $_POST['Department'];
$Department = str_replace("'","''",$Department);
$ProblemDescription = $_POST['ProblemDescription'];
$ProblemDescription = str_replace("'","''",$ProblemDescription);
$Email = $_POST['Email'];
$Email = str_replace("'","''",$Email);
$Photo = $_FILES['Photo'];
$file_size = $_FILES['Photo']['size'];
 
 if ($file_size > 102400) {
            echo "<script>alert('Image size exceeds maximum file size allowed'); history.go(-1);</script>";
            exit;
  }
 if($file_size == "") {
            echo "<script>alert('No image found.'); history.go(-1);</script>";
            exit;
  }
 
 //uploading and resizing image width 300 max
 if (isset ($_FILES['Photo'])){
              $imagename = $_FILES['Photo']['name'];
              $source = $_FILES['Photo']['tmp_name'];
              $target = "C:\\wamp\\www\\ITSupportApp\\error_images\\".$imagename;
              move_uploaded_file($source, $target);
 
              $imagepath = $imagename;
              $save = "C:\\wamp\\www\\ITSupportApp\\error_images\\" . $imagepath; //This is the new file you saving
              $file = "C:\\wamp\\www\\ITSupportApp\\error_images\\" . $imagepath; //This is the original file
 
              list($width, $height) = getimagesize($file) ; 
             
              //resize if width is more than 300
              if($width > 140)
              {
              $modwidth = 140; 
 
              $diff = $width / $modwidth;
 
              $modheight = $height / $diff;
            
              }
              else
              {
               $modwidth = $width;
               $modheight = $height;
              }
             
              $tn = imagecreatetruecolor($modwidth, $modheight) ;
              $image_info = getimagesize($file);
              $image_type = $image_info[2];
              if( $image_type == IMAGETYPE_JPEG ) {
                 $image = imagecreatefromjpeg($file) ; 
              } elseif( $image_type == IMAGETYPE_GIF ) {
                 $image = imagecreatefromgif($file);
              } elseif( $image_type == IMAGETYPE_PNG ) {
                 $image = imagecreatefrompng($file);
              }

              
              imagecopyresampled($tn, $image, 0, 0, 0, 0, $modwidth, $modheight, $width, $height) ; 
              $save = "C:\\wamp\\www\\ITSupportApp\\error_images\\" . $imagepath; //This is the new file you saving
              
              if( $image_type == IMAGETYPE_JPEG ) {
                 imagejpeg($tn,$save,100);
              } elseif( $image_type == IMAGETYPE_GIF ) {
                 imagegif($tn,$save);         
              } elseif( $image_type == IMAGETYPE_PNG ) {
                 imagepng($tn,$save);
              } 
             
              
             chmod($save,0777);
             
             $save = "image/" . $imagepath;
             
 }
 else
 {    echo('here3');
     echo "<script>alert('No image found'); history.go(-1);</script>";
     exit;
 }

$Status = "Open"; //set 'open' value for Status column
//inserting user's input to the database
$sql = "INSERT INTO reported_problem (TicketNumber, NameOfRequestor, UserID, Department, ProblemDescription, Date, Status, EscalatedTo, Email, Resolution, UpdatedOn, UpdatedBy, ImagePath) VALUES (".$result.",'".$NameOfRequestor."', '".$_SESSION['userID']."', '".$Department."','".$ProblemDescription."',".date('ymd').",'".$Status."','','".$Email."','',000000,'', '".$save."');";
$count = mysql_query($sql,$link) or die(mysql_error()); // excuted sql

if ($count == 1) //check whether the data is inserted to the database or not
{
require_once('C:\php\PHPMailer_v5.1\class.phpmailer.php');
            $mail = new PHPMailer();
            $mail->IsSMTP();
            $mail->Host = 'mail.bsgroup.com.sg';
            $mail->Port = 25;

            $mail->SMTPAuth = true;
            $mail->Username = '***';
            $mail->Password = '****';
            $mail->From = '*****';
            $mail->FromName = $NameOfRequestor;
            $mail->Subject = 'Support Request';
            $body = "The user has logged a IT support request.<br><br><br> Please click <a href=http://ibmx305/ITsupport/stafflogin.php>here</a> to login and check the request. <br><br><br> ";
            $mail->MsgHTML($body);
            $mail->AddAddress('potepote20@gmail.com', 'IT Department'); 

            if ($mail->Send()) {
                echo "<script>alert('Your request has been sent out successfully. Someone from the IT Department will be contacting you shortly to follow up your request. Thank you.'); history.go(-1); </script>";
            } 
}
?>

Thanks in advance.

[jasonahoule]

I am not sure what you are asking but if you want to change the name you want to change this line:

$imagepath = $imagename; 

There are a couple other concerns. The path you are saving to the database is not the same as where you are saving the file. I don't know if you have a symbolic link to that directory or what is going on so I can't really comment on that.

Another is you will overwrite images with the same name. Perhaps that is what your question is. If you are trying to get unique names to prevent overwriting images then you could append a timestamp or use a hash.

[Dorky]

 $target = "C:\\wamp\\www\\ITSupportApp\\error_images\\".$your_new_name_var_goes_here; 

why are you double slashing the path?

[pote86]

If no double slashing, it shows syntax error .... That's why. I am still new to PHP. Thanks to both .... I got it.

[007Julien]

It's often convenient to take the date, for example $tdy=date("ymd_His"), to build a new name for the image file. You can too compare the suffix (function strichr) with the type and take care with jpg and jpeg files...