chmod failed: Operation not permitted

can anyone help? safe mode is set to "0", which i believe is "off". i put a chmod command in one of my scripts and got the following error on running it: Warning: chmod failed: Operation not permitted in /path-here/index.phtml on line 1 why won't chmod work? the chmod command i used is: <?chmod("../index.phtml", 0646);write data to file that has been made world-writable here; chmod("../index.phtml", 0644);}?> the full error printout is: Warning: chmod failed: Operation not permitted in /path-here/index.phtml on line 1 Warning: fopen("../index.phtml","a") - Permission denied in /path here/index.phtml on line 1 Warning: Unable to find file identifier 0 in /path here/index.phtml on line 2 Warning: chmod failed: Operation not permitted in /path-here/index.phtml on line 2 I know the second error is because the file wasn't made world-writable so it wasn't able to write to it, i don't know what the third error is for __________________________________________________ Do You Yahoo!? Get email alerts & NEW webcam video instant messaging with Yahoo! Messenger http://im.yahoo.com