[SOLVED] uploading images through php form

[soycharliente]

How would I handle the case that someone wants to upload a file that has a name that's already being used on the server? I don't want it to overwrite that file.

 

What are some of the things that you people (is that PC enough? lol) have done?

[ramli]

You could use file_exists to validate the upload

 

<?php
$filename = '/path/to/foo.txt';

if (file_exists($filename)) {
    print "$filename exists";
} else {
    print "Het bestand $filename does not exists";
}
?> 

[ignace]

add the current time after your image, this way the image never will have the same name and never will be overwritten

 

// 1. seperate the file to: array ( 'file', 'ext' )

// 2. gleu it together using: _123456.

// 3. result: file_123456.ext

 

$file = implode('_'.time().'.', explode('.', $_FILES['uploadname']['name']));

 

// only usable under file.ext condition, if you need a more complicated version pm me

[soycharliente]

So I should force them to change the filename? Should I just change the filename for them and use some kind of number format that counts?

[ignace]

1. nope, you don't have to change the filename, but when it exists it will be overwritten (btw: when using file_exists() results are cached, use clearstatcache() to clear the buffer)

2. time() gives the current time and will never be the same because it keeps counting up... (unless you can time travel)

3. done.