Sometimes we want to display dynamic content based on where the visitor has come from. The place where the vistor link your website link from is called a “Referer”, so when someone clicks your link on Google, then Google is the referer. Using PHP we can target users coming from Google, we can then show them unique content or a deal. The code below simply echo’s a string as an example. You will need wrap your specific content inside the brackets.

// Display on for visitors coming from Google
if (strpos($_SERVER[HTTP_REFERER], "google") == true) {
   // Code for Google vistors
    echo "30% off today";
}