[SOLVED] preg_match help

[tqla]

I am trying to do a preg_match to see if the HTTP_REFERER is from within my domain or from an external link.

 

$site_url = http://(my website url is here);

if(isset ($HTTP_REFERER)) {
$ref = $HTTP_REFERER; 

if (preg_match($site_url, $ref)) {

echo "match";

} else {

echo "no match found";

}	

}

 

But I get this error and "no match" when it should be a match in my test:

 

Warning: preg_match() [function.preg-match]: Delimiter must not be alphanumeric or backslash on line 6

 

What am I doing wrong?  ???

[lordphate]

you will need to only sear for the www.domain.com, not http:// as you will usually have a / in the end of referrers

[Mark Baker]

What am I doing wrong?  ???

It looks as though you're trying to use preg_match() as though its syntax was the same as substr().

 

Why not simply test your domain against parse_url($HTTP_REFERER,PHP_URL_HOST)

[tqla]

ah ha. thanks lordphate and Mark Baker. I get it now.

 

<?php 

if(isset ($HTTP_REFERER)) {
if ( parse_url($HTTP_REFERER,PHP_URL_HOST) ) {
echo "match";
} else {
echo "no match found";
}	
}
?>

 

 

 

 

[tqla]

actually, the if statement would need to compare to something for this to work.

 

<?php 

if(isset ($HTTP_REFERER) == $url ) {
   if ( parse_url($HTTP_REFERER,PHP_URL_HOST) ) {
   echo "match";
   } else {
   echo "no match found";
   }   
}
?>

[tqla]

Oops I mean like this!! The comparison should be in the 'if' statement. Sheece. Tired.

 

<?php 

if(isset ($HTTP_REFERER)) {
   if ( parse_url($HTTP_REFERER,PHP_URL_HOST) == $url ) {
   echo "match";
   } else {
   echo "no match found";
   }   
}
?>