Hi,
I am using this script to upload and resize images to my server,
if ($_SERVER['REQUEST_METHOD'] == "POST")
{
/* SUBMITTED INFORMATION - use what you need
* temporary filename (pointer): $imgfile
* original filename : $imgfile_name
* size of uploaded file : $imgfile_size
* mime-type of uploaded file : $imgfile_type
*/
/*== upload directory where the file will be stored
relative to where script is run ==*/
$uploaddir = "../../../image_uploads/";
/*== get file extension (fn at bottom of script) ==*/
/*== checks to see if image file, if not do not allow upload ==*/
$pext = getFileExtension($imgfile_name);
$pext = strtolower($pext);
if (($pext != "jpg") && ($pext != "jpeg"))
{
print "<h1>ERROR</h1>Image Extension Unknown.<br>";
print "<p>Please upload only a JPEG image with the extension .jpg or .jpeg ONLY<br><br>";
print "The file you uploaded had the following extension: $pext</p>\n";
/*== delete uploaded file ==*/
unlink($imgfile);
exit();
}
//-- RE-SIZING UPLOADED IMAGE
/*== only resize if the image is larger than 250 x 200 ==*/
$imgsize = GetImageSize($imgfile);
/*== check size 0=width, 1=height ==*/
if (($imgsize[0] > 260) || ($imgsize[1] > 180))
{
/*== temp image file -- use "tempnam()" to generate the temp
file name. This is done so if multiple people access the
script at once they won't ruin each other's temp file ==*/
$tmpimg = tempnam("/tmp", "MKUP");
/*== RESIZE PROCESS
1. decompress jpeg image to pnm file (a raw image type)
2. scale pnm image
3. compress pnm file to jpeg image
==*/
/*== Step 1: djpeg decompresses jpeg to pnm ==*/
system("djpeg $imgfile >$tmpimg");
/*== Steps 2&3: scale image using pnmscale and then
pipe into cjpeg to output jpeg file ==*/
system("pnmscale -xy 260 180 $tmpimg | cjpeg -smoo 10 -qual 50 >$imgfile");
/*== remove temp image ==*/
unlink($tmpimg);
}
/*== setup final file location and name ==*/
/*== change spaces to underscores in filename ==*/
$final_filename = str_replace(" ", "_", $imgfile_name);
$newfile = $uploaddir . "$final_filename";
/*== do extra security check to prevent malicious abuse==*/
if (is_uploaded_file($imgfile))
{
/*== move file to proper directory ==*/
if (!copy($imgfile,"$newfile"))
{
/*== if an error occurs the file could not
be written, read or possibly does not exist ==*/
print "Error Uploading File.";
exit();
}
}
/*== delete the temporary uploaded file ==*/
unlink($imgfile);
print("<img src=\"../../../image_uploads/$final_filename\">");
/*== DO WHATEVER ELSE YOU WANT
SUCH AS INSERT DATA INTO A DATABASE ==*/
}
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="POST" enctype="multipart/form-data">
<input type="hidden" name="MAX_FILE_SIZE" value="500000">
<p>Upload Image: <input type="file" name="imgfile"><br>
<font size="1">Click browse to upload a local file</font><br>
<br>
<input type="submit" value="Upload Image">
</form>
/*== FUNCTIONS ==*/
function getFileExtension($str) {
$i = strrpos($str,".");
if (!$i) { return ""; }
$l = strlen($str) - $i;
$ext = substr($str,$i+1,$l);
return $ext;
}
However, only the name of the file is showing up, it contains 0 bytes. Any ideas as to what could be causing this anyone.
It doesn't resize at all if the upload is larger than the specified amount. I'm pulling my hair out !!
Thanks in advance
