Can I call the function from php class using jquery ajax? - php

Question

I begin with an object-oriented programming in php.
I want to do the logging - using ajax and jquery.
EDIT: Can I call the function ajax from file jquery.php - using jquery AJAX?
//FILE jquery.php
class jquery {
public function ajax() {
echo "result";
}
}

Answer 1

If you make an ajax call similar to this :
http://example.com/ajax.php?firstParam=1
Within your ajax.php file you can do something like this :
switch($_GET['firstParam']){
case "1":
callYourFunction();
break;
case "2":
someOtherFunction();
break;
}
This is a very stripped down example... In a real world case you would have to take security into account and sanitize any information you are getting from outside your server (i.e. from a user).
The names I have given are only place holders - you can change the function/variable names to whatever you feel comfortable with.
I hope this sheds some light on your conundrum.

Answer 2

Not sure if you completely understand what AJAX is, but it's an acronym for Asynchronous JavaScript and XML. With Ajax, web applications can send data to, and retrieve data from, a server asynchronously (in the background) without interfering with the display and behaviour of the existing page. That's it.
This I believe is what you're looking for (though its not OOP, but im not writing an entire OOP login to try answer your question)
File: login.php
<?php
$db = new PDO("mysql:host=localhost;dbname=database", SQL_USER, SQL_PASS );
$stmt = $db->prepare('SELECT user_id, user_activated FROM users WHERE ( username = AND user_password = ? LIMIT 1');
$stmt->execute( array( $_POST['u'], $_POST['p'] ) );
if( $stmt->rowCount() == 1 )
{
// Authentication session storage stuff here
echo 'Logged in';
}
else
{
echo 'bad login';
}
?>
So you could have a HTML page with something like:
<div id="results"></div>
<input type="text" id="txtUsername" /> <br />
<input type="password" id="txtPassword" /><br />
<button id="cmdLogin">Login</button>
<script>
$(document).ready(function(){
$("#cmdLogin").click(function(){
$u = $("#txtUsername").val();
$p = $("#txtPassword").val();
$.ajax({
type: "POST",
url: "http://yoursite.com/login.php",
data: "u="+u+"&p="+p
}).done(function(results) {
$("#results").html(results).hide().fadeIn();
});
});
});
</script>
Also, keep in mind this code is un-tested and written it as replying to this, so don't treat this as a solution to what you're wanting, but rather a resource to help you to implement what it is you're asking for.

Answer 3

You cannot call a class directly - but you can fetch the result of an execution.
Here an example how you can call it nearly direct - but don't use this for critical login code.
<?php
$ftcn = $_GET['getname'];
$bc = new ReallyBadCode();
$bc->$ftcn();
class ReallyBadCode{
function test(){
}
function __call($name, $args){
$this->$name($args);
}
}