PHP upload image via AJAX/HTML 5 rename file - php

Question

I am not real good at reading the code for uploading images via php/ajax so i am hoping a php guru can help me out. I am trying to take the image file name and if it has spaces in it then replace those spaces with an underscore "_"
The php code for uploading is this:
$file_name = ( isset($_REQUEST['ax-file-name']) && !empty($_REQUEST['ax-file-name']) )?$_REQUEST['ax-file-name']:'';
$currByte = isset($_REQUEST['ax-start-byte'])?$_REQUEST['ax-start-byte']:0;
if($is_ajax)//Ajax Upload, FormData Upload and FF3.6 php:/input upload
{
//we get the path only for the first chunk
$full_path = ($currByte==0) ? checkFileExits($file_name, $upload_path):$upload_path.$file_name;
//Just optional, avoid to write on exisiting file, but in theory filename should be unique from the checkFileExits function
$flag = ($currByte==0) ? 0:FILE_APPEND;
//formData post files just normal upload in $_FILES, older ajax upload post it in input
$post_bytes = isset($_FILES['Filedata'])? file_get_contents($_FILES['Filedata']['tmp_name']):file_get_contents('php://input');
//some rare times (on very very fast connection), file_put_contents will be unable to write on the file, so we try until it writes
while(#file_put_contents($full_path, $post_bytes, $flag) === false)
{
usleep(50);
}
//delete the temporany chunk
if(isset($_FILES['Filedata']))
{
#unlink($_FILES['Filedata']['tmp_name']);
}
//if it is not the last chunk just return success chunk upload
if($isLast!='true')
{
echo json_encode(array('name'=>basename($full_path), 'size'=>$full_size, 'status'=>1, 'info'=>'Chunk uploaded'));
}
}
else //Normal html and flash upload
{
$isLast = 'true';//we cannot upload by chunks here so assume it is the last single chunk
$full_path = checkFileExits($file_name, $upload_path);
$result = move_uploaded_file(str_replace(" ", "_",$_FILES['Filedata']['tmp_name']), $full_path);//make the upload
if(!$result) //if any error return the error
{
echo json_encode( array('name'=>basename($full_path), 'size'=>$full_size, 'status'=>-1, 'info'=>'File move error') );
return false;
}
}
I've already tried the following (with str_replace(" ", "_", $nameoffile):
$post_bytes = isset($_FILES['Filedata'])? file_get_contents(str_replace(" ", "_",$_FILES['Filedata']['tmp_name'])):file_get_contents('php://input');
That seems to do nothing to rename it. So where am i missing it at?

Answer 1

The problem in your code is , you are trying to rename the temporary name of image file not the actual name
move_uploaded_file(str_replace(" ", "_",$_FILES['Filedata']['tmp_name']), $full_path);//make the upload
So you have to remove the str_replace from temporary name and append this to actual name like this.
move_uploaded_file($_FILES['Filedata']['tmp_name'], str_replace(" ", "_",$full_path));//make the upload
Hope it clarifies your doubt.