apache - php file operations permission denied -

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i have 2 virtual hosts on redhat enterprise server, 1 of functions desired. second have problems when using php kind of file operations. far can tell both virtual hosts have been set in same. have checked file permissions have been set correctly on folders/files in question. have gone far set permissions 777.

can suggest might have gone wrong? virtual hosts set follows:

<virtualhost *:80>  servername intranet  serveralias intranet *.intranet  documentroot /home/burnside/public_html  <directory "/home/burnside/public_html">      allow      options +indexes  </directory> </virtualhost>  <virtualhost *:80>  servername tracker  serveralias tracker *.tracker  documentroot /home/tracker/public_html  <directory "/home/tracker/public_html">       allow       options +indexes  </directory> </virtualhost>


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