Error in script to log Names and Email

[lorends]

Please help me to discover and correct the error in the following script.

$sitename
$siteaddress","FROM:$adminaddress");

IF ($logging=="yes") {
}
NewSite="vmlog.txt"; 

// Nothing needs to be changed here
$fl=fopen(NewSite,"a+"); 
// sets the pipe delimiters
fwrite($fl,"$fname,$lname,$vemail,$comments\n"); 
fclose($fl); 

Thanks for your help.