Hi
I have the following script to upload an image to the server.
Instead of the script producing a unique name for the image, I actually want to just replace one image with another..ie. overwrite an image which is already there, with another of the same name.
I'm getting a 'File Upload Sucessful' message - but the new image is not overwriting the old one.
Any help would be great.
I think the problem is around the whole tmp_file naming, as I've been trying to remove that and just stick with image_name throughout...but I've got a bit mixed up.
`
`<?php
//define a maxim size for the uploaded images in Kb
define ("MAX_SIZE","1000");
//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.
$errors=0;
//checks if the form has been submitted
if(isset($_POST['Submit']))
{
//reads the name of the file the user submitted for uploading
$image_name=$_FILES['image']['name'];
//if it is not empty
if ($image_name)
{
//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>';
$errors=1;
}
else
{
//get the size of the image in bytes
//$_FILES['image']['tmp_name'] is the temporary filename of the file
//in which the uploaded file was stored on the server
$size=filesize($_FILES['image']['tmp_name']);
//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>';
$errors=1;
}
//we will give an unique name, for example the time in unix time format
//$image_name=time().'.'.$extension;
//the new name will be containing the full path where will be stored (images
//folder)
$newname="images/Grounds/".$image_name;
//we verify if the image has been uploaded, and print error instead
$copied = move_uploaded_file($_FILES['image']['tmp_name'], $newname);
if (!$copied)
{
echo '<h1>Copy unsuccessfull!</h1>';
$errors=1;
}}}}
//If no errors registred, print the success message
if(isset($_POST['Submit']) && !$errors)
{
echo "<h1>File Uploaded Successfully! Try again!</h1>";
}
?>
<!--next comes the form, you must set the enctype to "multipart/frm-data"
and use an input type "file" -->
<form name="newad" method="post" enctype="multipart/form-data"
action="">
<table>
<tr><td><input type="file" name="image"></td></tr>
<tr><td><input name="Submit" type="submit" value="Upload image">
</td></tr>
</table>
</form>`
`
