Copy and rename a file php

You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Skip to content. Function copy to copy the file. Function rename to rename the file. Function unlink to delete the file. Share this: Twitter Facebook. Like this: Like Loading Published by phpprogramminglanguage8.

Leave a Reply Cancel reply Enter your comment here This is not a bug. Either handle the warning as is appropriate to your use-case, or call copy and then unlink , which will avoid the doomed calls to chown and chmod , thereby eliminating the warning.

This is useful because it allows you to build a file as a temp file, then rename it to where you want it to be, and nobody sees the file when it's half done. I bet the other problems you had were the result of not calling clearstatcache , which can cause PHP to act like a file exists though it has since been deleted. Note, that on Unix, a rename is a beautiful way of getting atomic updates to files. Just copy the old contents if necessary , and write the new contents into a new file, then rename over the original file.

Any processes reading from the file will continue to do so, any processes trying to open the file while you're writing to it will get the old file because you'll be writing to a temp file , and there is no "intermediate" time between there being a file, and there not being a file or there being half a file. Oh, and this only works if you have the temp file and the destination file on the same filesystem eg. It's not documented. Remark for "php at stock-consulting dot com"'s note: This depends on the operating system.

On windows-systems you can't rename a file to an existing destination ok, with tools you can - but they unlink the exisiting one before.

The problem persists even after properly closing the file and flushing the buffer. Inserting a sleep command before the renaming cures the problem.

There is an associated bug in the Ubuntu bug system for this as well, that was escalated to bugs. However, copy is, unlike rename , NOT useable for "atomic updates". You can change it and add the location with the file name. To rename a file, we can use rename function in PHP. This function rename the file with given name as in the below code. For example, to rename the test1.

Notice that the rename function returns true if the file is renamed successfully, otherwise it returns false. To delete a file, we can use unlink function in PHP.