hi there i want to upload an image into a webpage i have the following code which is not working .where is the problem or who have a better code.

//define a maxim size for the uploaded images in Kb
 define ("MAX_SIZE","100"); 

//This function reads the extension of the file. It is used to determine if the file  is an image by checking the extension.
 function getExtension($str) {
         $i = strrpos($str,".");
         if (!$i) { return ""; }
         $l = strlen($str) - $i;
         $ext = substr($str,$i+1,$l);
         return $ext;

//This variable is used as a flag. The value is initialized with 0 (meaning no error  found)  
//and it will be changed to 1 if an errro occures.  
//If the error occures the file will not be uploaded.
//checks if the form has been submitted
    //reads the name of the file the user submitted for uploading
    //if it is not empty
    if ($image) 
    //get the original name of the file from the clients machine
        $filename = stripslashes($_FILES['image']['name']);
    //get the extension of the file in a lower case format
        $extension = getExtension($filename);
        $extension = strtolower($extension);
    //if it is not a known extension, we will suppose it is an error and will not  upload the file,  
    //otherwise we will do more tests
 if (($extension != "jpg") && ($extension != "jpeg") && ($extension != "png") && ($extension != "gif")) 
        //print error message
            echo '<h1>Unknown extension!</h1>';
//get the size of the image in bytes
 //$_FILES['image']['tmp_name'] is the temporary filename of the file
 //in which the uploaded file was stored on the server

//compare the size with the maxim size we defined and print error if bigger
if ($size > MAX_SIZE*1024)
    echo '<h1>You have exceeded the size limit!</h1>';

//we will give an unique name, for example the time in unix time format
//the new name will be containing the full path where will be stored (images folder)
//we verify if the image has been uploaded, and print error instead
$copied = copy($_FILES['image']['tmp_name'], $newname);
if (!$copied) 
    echo '<h1>Copy unsuccessfull!</h1>';

//If no errors registred, print the success message
 if(isset($_POST['Submit']) && !$errors) 
    echo "<h1>File Uploaded Successfully! Try again!</h1>";


Edited by mike_2000_17: Fixed formatting

6 Years
Discussion Span
Last Post by pssubash
This topic has been dead for over six months. Start a new discussion instead.
Have something to contribute to this discussion? Please be thoughtful, detailed and courteous, and be sure to adhere to our posting rules.