Blocking certain queries from google?

Im receiving some spam queries from google and i want to show and 404 header to that specific list or words if they are in the google query.

I dont know if its better to use php or httaccess.

Any help are welcome.

Thanks in advance.

 

I think php may help here.

I have just wrote draft code for you, let me know if you get any issue on it:

<?php
$bad_words = array("bad","verybad","worst");
 
foreach ($bad_words as $word) {
    if (preg_match("/$word/", $_SERVER['QUERY_STRING'])) {
        header("Locatin 404.php");
        exit;
    }
}
 
?>

PHP:

 

I does not work

 

this is ready code, change words inside quotes:
"bad","verybad","worst"

and put whole code into header of your index.php file

 

What trecords posted is almost correct, updated:

<?php
$bad_words = array("bad","verybad","worst");
 
foreach ($bad_words as $word) {
    if (preg_match("/$word/", $_SERVER['HTTP_REFERER'])) {
        header("Locatin 404.php");
        exit;
    }
}
 
?>

PHP:

You can also improve on it to check of the domain is indeed from google.com first.