在PHP中动态加载类时遇到问题

Question

Here's what the class loader looks like:

loader.php

class Load
{
    public static function init($class)
    {
        require_once 'classes/' . $class . '.php';
        return new $class();
    }
}

$class = Load::init('MyClass');

The error being returned is:

Fatal error:  Class 'MyClass' not found in /www/website/application/models/Database/loader.php on line 5

If I put an echo 'WORKS'; into MyClass.php, I can see that it isn't being included. That echo doesn't execute.

UPDATE: It seems I've been editing a cached version of my code and not the actual file... The code works :}

Answer 1

Try this.

function __autoload($class_name) {
    include $class_name . '.php';
}

Put that anywhere publically accessable to the rest of your code. At that point, when you do something like this.

$class = new Foobar();

If the class is not already included, php will run that __autoload function and include the file for you. Make sure you point that include statement to wherever your classes are stored.

For more information on that, check out the php doc here.

http://php.net/manual/en/language.oop5.autoload.php