Location: PHPKode > scripts > Smart AJAX Controller > ajax.php
<?php

	//including the class file
	require('class.smartajaxcontroller.php');
	
	//Initializing the controller
	//Output buffer will be used to later on return the result in gzip
	$ajax=new SmartAjaxController();
	
	//If AJAX has submitted a serialized string to be parsed to variables.
	if(isset($_POST['data'])){
		//These variables can be used by $ajax->getVar funtion
		$ajax->setInputVariables($_POST['data']);
	}

	//This is dependant on javascript front-end controller, used as an example
	if(!empty($_POST) && isset($_POST['action'])){
	
		//this assumes that action is defined by jQuery before being submitted to back-end
		switch($_POST['action']){
		
			//This is the same example used in javascript file
			case 'alertLowercaseString':
				$ajax->setKey('action','alert');
				$ajax->setKey('message','Your string lowercased: '.strtolower($ajax->getVar('string')));
			break;

			default:
				//If no action is found, execute frontend error callback
				$ajax->setKey('error',1);
				$ajax->setKey('message','This system action does not exist!');

		}
		
	} else {
		//Since no action was defined or no post was used at all, we simply set the response to return errors to front-end
		$ajax->setKey('error',1);
		$ajax->setKey('message','This system action does not exist!');
	}
	
	//Here we return the result in gzipped JSON string
	//This also sets proper headers to the file
	$ajax->output();

?>
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