PHP Fatal Error: Class not found when loading URL - php

Question

I have a strange bug at the moment in my web service I am coding.
When I am loading an specific url I get a success and error at the same time?
This is what I have in my index.php:
<?php
require_once 'functions/lib.php';
require_once 'core/init.php';
// Ask for request URL that was submitted and define scriptPath. Explode content of REQUEST URL to evaluate validity.
$requestURL = (($_SERVER['REQUEST_URI'] != "") ? $_SERVER['REQUEST_URI'] : $_SERVER['REDIRECT_URL']);
$scriptPath = dirname($_SERVER['PHP_SELF']);
$requestURL = str_replace($scriptPath, "", $requestURL);
$requestParts = explode("/", $requestURL);
// Check for valid api version
$validAPIVersions = array("v1");
$apiVersion = $requestParts[1];
// If API Version not in valid API array return 404, else OK.
if (!in_array($apiVersion, $validAPIVersions)) {
httpResponseCode(404);
echo $GLOBALS['http_response_code'];
echo "<br>" . "API Version not valid";
exit();
}
// Check for valid API endpoint
$validEndPoints = array("tickets");
$endPoint = $requestParts[2];
if (!in_array($endPoint, $validEndPoints)) {
httpResponseCode(404);
echo $GLOBALS['http_response_code'];
echo "<br>" . "Endpoint not valid";
exit();
}
// get the endpoint class name
$endPoint = ucfirst(strtolower($endPoint));
$classFilePath = "$apiVersion/$endPoint.php";
if (!file_exists($classFilePath)) {
httpResponseCode(404);
echo $GLOBALS['http_response_code'];
exit();
}
// load endpoint class and make an instance
try {
require_once($classFilePath);
$instance = new $endPoint($requestParts);
} catch (Exception $e) {
httpResponseCode(500);
echo $GLOBALS['http_response_code'];
exit();
}
and this is the corresponding "Tickets.php"
<?php
echo "OK";
?>
In the last two rows of my index.php, I am loading the specific class (named in the URL). For testing purposes, I have an "echo "OK" in this file. And this is the result when I am loading the URL I need:
http://api.medifaktor.de/v1/tickets
OK
Fatal error: Class 'Tickets' not found in /usr/www/users/kontug/api.medifaktor.de/webservice/index.php on line 45
I get the OK I was expecting AND the error for the Class Tickets, that is not found. Line 45 is
$instance = new $endPoint($requestParts);
Can someone give me a helping hand?
Best
Sebastian

Answer 1

The problem is that you don't have a class "Tickets" defined. After you load the tickets.php file, you are attempting to instantiate a class. Loading a file is not the same thing as defining a class. Within tickets.php (or some other included file), you need to define the class, like so:
class Tickets
{
// some properties here
private $endpoint;
// some methods here
public function __construct($endpoint)
{
$this->endpoint = $endpoint;
}
}
If you're not sure how to construct classes in PHP, read the section in the manual on classes.
Update: I added some example code within the class for version PHP5+.

Answer 2

Try the following for your test, in the 'ticket.php' file add:
class Ticket {
public function __construct()
{
echo 'testing';
}
}
Then make sure you either namespace or require the file.