How to call PHP function using jQuery ajax?

Question

I have a file called myfunctions.php where I have a lot of functions, like

function sendForm(){
    //save form
}
function fn2(){
 //do something
}
 // Other fun         


        

Answer 1

$.ajax({
    //...
    data: {key1: "value1", key2: "value2", key3: "value3", type:0},
    //...
});

myfunctions.php:

<?php
//...
if (!isset($_POST['type'])) { /* return something */ exit; }
$type = $_POST['type'];
if ($type == 0)
{
    function1();
} else if ($type == 1) {
    function2();
} //etc.
//...
?>

Answer 2

In PHP

<?php
// create a list of approved function calls
$approved_functions = array('sendForm','fn2');

// check the $_GET['function'] and see if it matches an approved function
if(in_array($_GET['function'], $approved_functions))
{
    // call the approved function
    $_GET['function']();
}

function sendForm(){
    //save form
}
function fn2(){
 //do something
}

In AJAX

// specify which function to call
url: "myfunctions.php?function=sendForm",