How to call a php function from ajax? - php

Question

I am familiar of how to get ajax to go to a php page an execute a series of things and then return json data. However is it possible to call a specific function which resides in a given page?
Basically what I want is to reduce the number of files in a project. So I can put a lot of common functions in one page and then just call whatever the function that I want at the moment.

Answer 1

For AJAX request
Include jQuery Library in your web page.
For e.g.
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
Call a function on button click
<button type="button" onclick="create()">Click Me</button>
While click on button, call create function in JavaScript.
<script>
function create () {
$.ajax({
url:"test.php", //the page containing php script
type: "post", //request type,
dataType: 'json',
data: {registration: "success", name: "xyz", email: "abc#gmail.com"},
success:function(result){
console.log(result.abc);
}
});
}
</script>
On the server side test.php file, the action POST parameter should be read and the corresponding value and do the action in PHP and return in JSON format e.g.
$registration = $_POST['registration'];
$name= $_POST['name'];
$email= $_POST['email'];
if ($registration == "success"){
// some action goes here under php
echo json_encode(array("abc"=>'successfuly registered'));
}

Answer 2

You cannot call a PHP function directly from an AJAX request, but you can do this instead:
<? php
function test($data){
return $data+1;
}
if (isset($_POST['callFunc1'])) {
echo test($_POST['callFunc1']);
}
?>
<script>
$.ajax({
url: 'myFunctions.php',
type: 'post',
data: { "callFunc1": "1"},
success: function(response) { console.log(response); }
});
</script>

Answer 3

As a structure for this kind of purposes, I suggest this:
PHP
<?php
if(isset($_POST['action'])){
if ($_POST['action'] == "function1") { func1(); }
if ($_POST['action'] == "function2") { func2(); }
if ($_POST['action'] == "function3") { func3(); }
if ($_POST['action'] == "function4") { func4(); }
}
function func1(){
//Do something here
echo 'test';
}
?>
jQuery
var data = { action: 'function1' };
$.post(ajaxUrl, data, function(response) {
if(response != "") {
$('#SomeElement').html(response);
}else{
alert('Error, Please try again.');
}
});
As mentioned, you can't call a PHP function directly from an AJAX call.

Answer 4

If I understand correctly, yes you can.
Put all your functions in one php file and have the ajax pass as a parameter which one you want to call. Then with a switch or if structure, execute the one you want.

Answer 5

jquery:
$(document).ready(function(){
$('#tfa_1117700').change(function(){
var inputValue = $(this).val();
var v_token = "{{csrf_token()}}";
$.post(
"{{url('/each-child')}}",
{ dropdownValue: inputValue,_token:v_token },
function(data){
console.log(data);
$('#each-child-html').html(data);
}
);
});
});
php:
public function EachChild(Request $request)
{
$html ="";
for ($i=1; $i <= $request->dropdownValue; $i++)
{
$html = $i;
}
echo $html;
}