note 61050 added to ref.oracle

hi i had installed oracle 9i and php4 in my computer and after that i had written a little program which in that i must have connected to oracle through ora_logon but i saw this error appeared Fatal error: Call to undefined function: ocilogon() in c:\inetpub\wwwroot\bahar.php on line 14 i dont know what must i do please guid me sincerely yours ---- Server IP: 200.87.98.74 (proxied: 200.75.160.21 1.0 Proxy52.MegaLink.com:3128 (squid/2.5.STABLE6)) Probable Submitter: 217.219.170.9 (proxied: 217.219.170.9, 217.219.170.9) ---- Manual Page -- http://www.php.net/manual/en/ref.oracle.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+61050 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+61050&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+61050&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+61050&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+61050&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+61050&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+61050&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+61050&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+61050&report=yes Search -- http://master.php.net/manage/user-notes.php