Simple starting point for PHP webservices

API_TEMPLATE.php

<?php
session_start();

// Create the return array
$return = array(
	"response" => "Success",
	"success" => true,
	"data" => array()
);

// Make sure an action parameter has been sent to this endpoint
checkParams(array("action"));

switch($_REQUEST['action']){
		
	case "some_action":
		
		
		
		output();
		break;
	
	default: oops("Error: invalid action parameter");
}

function checkParams($reqd){
	foreach($reqd as $param)
		if(!isset($_REQUEST[$param])) 
			oops("Error: Missing $param parameter.");
}

function oops($oopsie){
	$GLOBALS['return']['response'] = $oopsie;
	$GLOBALS['return']['success'] = false;
	$GLOBALS['return']['data'] = array();;
	output();
}

function output(){
	header("Content-Type: application/json");
	echo json_encode($GLOBALS['return']);
	exit;
}