Question

I don’t get why I get this error

Fatal error: Class 'ImageJpg' not found

Here is the code that I use

spl_autoload_register(function($class) {
    if(file_exists($class))
    {
        include $class.'.php';
    }
});

$n = new ImageJpg();

File ImageJpg.php is in the same dir with the code above.

Here is the content of ImageJpg.php

<?php
class ImageJpg
{
    public function __construct()
    {
        echo 'Image from jpg called';
    }
}

Answer 1

Is there a class named ImageJpg in your ImageJpg.php file? And does file exist?
Try this:

spl_autoload_register(function($class) {
    if(file_exists($class.'.php'))
    {
        include $class.'.php';

        if (!class_exists($class))
        {
            die('required class not present');
        }
    }
    else
    {
        die('file not found');
    }
});