Well, at first. You need to tell the autoloader where to find the php file for a class. That’s done by following the PSR-0 standard. The best way is to use namespaces. The autoloader searches for a Acme/Tests/ReturningTest.php file when you requested a Acme\Tests\ReturningTest class. There are some great namespace tutorials out there, just search … Read more
If you are using composer, you do not create the autoloader but let composer do its job and create it for you. The only thing you need to do is create the appropriate configuration on composer.json and execute composer dump-autoload. E.g.: { “autoload”: { “psr-4”: {“App\\”: “src/”} } } By doing the above, if you … Read more
You need to register autoload functions with spl_autoload_register. You need to provide a “callable”. The nicest way of doing this, from 5.3 onwards, is with an anonymous function: spl_autoload_register(function($class) { include ‘classes/’ . $class . ‘.class.php’; }); The principal advantage of this against __autoload is of course that you can call spl_autoload_register multiple times, whereas … Read more
Class1 is not in the global scope. Note that this is an old answer and things have changed since the days where you couldn’t assume the support for spl_autoload_register() which was introduced in PHP 5.1 (now many years ago!). These days, you would likely be using Composer. Under the hood, this would be something along … Read more
The problem is that the classmap is NOT actually faster in every case! The speed of the classmap comes from not having to check the filesystem if a file exists before doing the always necessary work of loading it, parsing it (opcode caches will help here) and then executing it. But the downside of the … Read more
My list of changes after moving to Rails 5: Place lib dir into app because all code inside app is autoloaded in dev and eager loaded in prod and most importantly is autoreloaded in development so you don’t have to restart server each time you make changes. Remove any require statements pointing to your own … Read more
spl_autoload_register() allows you to register multiple functions (or static methods from your own Autoload class) that PHP will put into a stack/queue and call sequentially when a “new Class” is declared. So for example: spl_autoload_register(‘myAutoloader’); function myAutoloader($className) { $path=”/path/to/class/”; include $path.$className.’.php’; } //————————————- $myClass = new MyClass(); In the example above, “MyClass” is the name … Read more
This can happen for a variety of reasons. The important thing is to pay attention to the error message which generally points very accurately to the source of the issue. Path Case The most common reason for this is that, as shown in the error message, the case for the different components of the pathname … Read more
As of Rails 2.3.9, there is a setting in config/application.rb in which you can specify directories that contain files you want autoloaded. From application.rb: # Custom directories with classes and modules you want to be autoloadable. # config.autoload_paths += %W(#{config.root}/extras)