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Force PHP CLI to write files as www-data – Apache

Is there a way to make PHP CLI-invoked scripts to fwrite() as www-data?

Currently, if I create a text file and write to it using my own custom script php writeToLogFile.php, the file is created as root, and with very minimal permissions: rw- r– r–

This means then if I want to write further data to this file in apache (running as www-data), I get permission denied.

This is part of a larger system, so it wouldn’t be practical for me to chmod() or chown() each file I create. I also don’t want to set the umask() in PHP as this may interfere with other threads.

I should also mention the file is being written to an NFS share on a different server (all servers are Ubuntu). The folder is shared as: /myfolder/logsfiles 01.02.03.04(rw,sync,no_subtree_check,no_root_squash)

Thank you in advance.

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  1. 0

    execute sudo su www-data && php writeToLogFile.php this will first switch user and than execute your code as www-data user only…

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  2. 0

    php can’t change the userid that the process runs as, only privileged (e.g. setuid) programs can do this. You need to run the script as www-data.

    sudo -u www-data php writeToLogFile.php
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