Warning: chmod() [function.chmod]: Operation not permitted ?

I have a PHP script that changes permissions on a file, writes to it and then changes permissions back.

But I am getting the following error?

Is there something I need to change in WHM or php.ini file to allow chmod?



chmod($file, 0777); //change permissions to allow write
chmod($file, 0644); //change permissions of back after update

Warning: chmod() [function.chmod]: Operation not permitted in /home/mywebsite/public_html/admin/website_settings.php on line 12

Warning: chmod() [function.chmod]: Operation not permitted in /home/mywebsite/public_html/admin/website_settings.php on line 38

Warning: Cannot modify header information - headers already sent by (output started at /home/mywebsite/public_html/admin/website_settings.php:12) in /home/mywebsite/public_html/admin/website_settings.php on line 388
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Dave BaldwinFixer of ProblemsCommented:
Apache normally runs under a limited user that does not have permission to do those things.  You have to enable or implement 'suexec' to get PHP functions to run under your own user permissions.  http://httpd.apache.org/docs/2.2/suexec.html

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