call PHP from Javascript returns current page HTML

I have created an ionic app for client management. I'm trying to add a mail function (PHP script on server) that can be called from the client.

I have created a javascript function calling the PHP script. As far as i can tell that works, it gives 200 OK response. My problem is that the data being returned is the HTML of the page from were i use the javascript function.

This is the javascript function:

$http({url : '#/php/mailer.php',
            method: "POST",
            data: {email: "test@test.test"}
        }).success(function(data, status, headers, config){
                console.log(data);
                console.log(status);
                console.log(headers);
                console.log(config);
        }).error(function(data, status, headers, config){
            console.log("Something went wrong ");
        });

Simple PHP for testing:

<?php
    echo "test";
?>