PHP Warning:  chmod(): Operation not permitted in

Hi,

I need to change the permissions of the file i am using the following file to change the folder permissions so please have a look and please guide me where i am donig mistake.



PHP Warning:  chmod(): Operation not permitted in /home/httpd/vhosts/kooltel.com/httpdocs/rights.php on line 3
Warning: chmod(): Operation not permitted in /home/httpd/vhosts/kooltel.com/httpdocs/rights.php on line 3 PHP Warning:  chgrp(): Operation not permitted in /home/httpd/vhosts/kooltel.com/httpdocs/rights.php on line 4
Warning: chgrp(): Operation not permitted in /home/httpd/vhosts/kooltel.com/httpdocs/rights.php on line 4 PHP Warning:  chown(): Operation not permitted in /home/httpd/vhosts/kooltel.com/httpdocs/rights.php on line 5
Warning: chown(): Operation not permitted in /home/httpd/vhosts/kooltel.com/httpdocs/rights.php on line 5 Start Free Trial

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<?php
	$rootpath = "/home/httpd/vhosts/kooltel.com/httpdocs/";
	chmod($rootpath."wholesale/test", 0777);
	chgrp($rootpath."wholesale/test","psacln");
	chown($rootpath."wholesale/test","kooltel");
	echo "Rights set successfully!";
?>