Question

Some code I want to call from ajax is in a separate file.php:

<?php
     session_start();
     $email1 = $_POST['email1'];
    //some code here processing $email1
     $response = 'some text';
?>

This is how I call it from ajax:

$.ajax({ url: 'file.php',
    data: {email1: $("#user_email").val()},
    type: 'post'
       });

I’d like to be able to do something like this after the call to file.php:

 alert($response);

How do I do that?

Answer 1

In your PHP you have to echo the $response, and in your JS you have to specify the callback function like so:

$.ajax({ 
    url: 'file.php',
    data: {
        email1: $("#user_email").val()
    },
    type: 'post',
    success: function(data) { 
        alert(data);
    }
});