PHP обнаружите название спама
sdsdsdsdsd
Homeless Hornet
sdsdsdsdsd<!-- within your existing form add this field -->
<input type="text" id="website" name="website"/>
//in your php ignore any submissions that inlcude this field
if(!empty($_POST['website'])) die();
sdsdsdsddsdsdsdsds
csadsds
đà
ư\
fdasfs
/*in your css hide the field so real users cant fill it in*/
form #website{ display:none; }