Calling a PHP function using AJAX, how?

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11-11-2012, 04:43 AM
deepode

Calling a PHP function using AJAX, how?

Welcome!
I am not sure if this is right section (because of AJAX section)....

I have 1 php file - "functions.php" containing many functions like add(), edit() etc.

But IDK how to operate'em using AJAX HMLHttpRequest()....actually I M confused at

Code:

send()

...

Here are files, let me know how to operate functions using AJAX and yes... parameters are required. And yes....POST method is required too.

functions.php:

PHP Code:

function add($name) { echo $name.' add function is working'; //Just to test }; function edit($name|) { echo $name.' edit function is working'; //Just to test };

beta.html:

HTML Code:

<!DOCTYPE html> <html> <head> <script> // variable named XMLHTTP is used for creating XMLHttpRequest(); </script> </head>

Sorry if i didn't explained well enough, hope you will get it.
Thanks in advance. :D
11-11-2012, 09:17 AM
darkylord

Here is an example, I hope it helps, other than that you can read some tutorials on ajax and understand it better.

beta.html

Code:

<!DOCTYPE html> <html> <head> <script> function loadXMLDoc() { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { // use the xmlhttp.responseText however you need. } } xmlhttp.open("POST", "functions.php?name="+somename, true); //somename is whatever you want to send in there as name xmlhttp.send(); } </script> </head>

The loadXMLDoc() can be called when a button is clicked or when someone types something in a text field or even with a timer that calls it every few seconds. Just like any other javascript function.

functions.php:

Code:

function add($name) { echo $name.' add function is working'; //Just to test }; function edit($name|) { echo $name.' edit function is working'; //Just to test }; if(isset($_POST['name'])){ $name=$_POST['name']; add($name); edit($name); //whatever other function you want to call }
11-13-2012, 03:32 AM
deepode

It helped but....

Thanks, your answer helped but..

$_POST['name'] isn't being set...why?

Here are files......

Code:

/* AJAX */ function AjaxFunction() { var somename = "somenameTest"; var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.onreadystatechange=function() { if (xmlhttp.readyState==4 && xmlhttp.status==200) { document.getElementById("txtHint").innerHTML = xmlhttp.responseText; // use the xmlhttp.responseText however you need. } } xmlhttp.open("POST","gameFunctions.php?name="+somename, true); //somename is whatever you want to send in there as name xmlhttp.send(); alert("Script loaded"); }

Here is gameFunctions.php

PHP Code:

function add($name) { }; echo "php data<br>"; if(isset($_POST['name'])) { echo "true"; } else { echo "false"; }

And Output....

php data
false
11-13-2012, 06:23 AM
darkylord

My bad, the $_POST['name'] should be $_GET['name'] .
11-14-2012, 04:10 AM
deepode

Really....

Are you sure?
11-14-2012, 05:43 AM
darkylord

Yes I tested the code and worked fine with $_GET['name'] .