What are the limitations of including PHP code using JavaScript, and how can this issue be resolved?

When including PHP code using JavaScript, the PHP code will not be executed because JavaScript is a client-side language while PHP is a server-side language. To resolve this issue, you can make an AJAX request to a server-side PHP script that executes the desired PHP code and returns the result to the JavaScript function. ```javascript // JavaScript code to make an AJAX request to a PHP script var xhttp = new XMLHttpRequest(); xhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { // Handle the response from the PHP script console.log(this.responseText); } }; xhttp.open("GET", "example.php", true); xhttp.send(); ```