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PHP Upload Script


ShoeLace1291

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<?php

$q = mysql_query("SELECT id FROM table WHERE filename = '$filename'") or die(mysql_error()); // Select a single value from the table
$rows = mysql_num_rows($q) or die(mysql_error()); // Then count the rows

if($rows > 0) { // If filename already exists
$filename .= "abc"; // Add abc to the end of it (you may need to explode() the filename to add it before the extension
}

?>

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I'm sorry, but I'm confused.  If this is my script, what would I have to do?

<?php    
require_once('config.php');
if(empty($_POST['submitBtn'])){

echo "<!DOCTYPE html PUBLIC '-//W3C//DTD XHTML 1.0 Transitional//EN' 'DTD/xhtml1-transitional.dtd'>
<html>
<body>
      <form action='upload.php' method='post' name='fileForm' enctype='multipart/form-data'>
        File to upload:
        <table>
          <tr><td><input name='upfile' type='file'></td></tr>
          <tr><td><input type='submit' name='submitBtn' value='Upload'></td></tr>
        </table>  
      </form>
</body>";

}
    if (isset($_POST['submitBtn'])){

        // Path to upload the file
        $target_path = "uploads/";

        // Create the file name with path
        $target_path = $target_path . basename( $_FILES['upfile']['name']); 
     
        $filename = basename( $_FILES['upfile']['name']);

             $findimage = mysql_query("SELECT * FROM recent_files WHERE filename = $filename") or die("Error ".mysql_error());

$imagesfound = mysql_num_rows($findimage) or die(mysql_error()); 

     //If an image with the filename was found in the database...
     if($imagesfound != 0){

          //Generate 5 random characters to place before the file extension
          function generate_filename($length)
{
    $string = md5(time());
    $highest_startpoint = 5-$length;
    $filename = $filename .substr($string,rand(0,$highest_startpoint),$length);

    return $filename;

}

        // Try to move the file from the temporay directory to the defined.
        if(move_uploaded_file($_FILES['upfile']['tmp_name'], $target_path)){

  //Generate session id for that user
  function generate_session($length)
{

    $string = md5(time());
    $highest_startpoint = 32-$length;
    $session = substr($string,rand(0,$highest_startpoint),$length);

    return $session;

}

    $session = generate_session(10);

//Insert the image into the database
$query = mysql_query("INSERT INTO recent_files (filename,session)
                values('$filename', '$session')") or die("Error: ".mysql_error());
                     $_SESSION['mysession'] = $randomString;
            header("Location:image.php?img=$filename");
        } else{
            echo "There was an error uploading the file, please try again!";
        }
    }
?>

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