For example:. As of PHP 7. PHP 5. All too often, right? What I said here previously is only true on Windows. Example on Windows : include paths: - ". On Windows this works perfectly, but on a Linux machine, the backslashes won't work and additionally the file names are case-sensitive. Otherwise, if you omit the strtolower call, you have to use the class names exactly as specified by the file name, which can be annoying for class names that are defined with non-straightforward case like e.
I prefer the lowercase approach, because it is easier to use and the file name conversion can be done automatically on deploying. Be careful using this function on case sensitive file systems. But when releasing to my linux server, none of my class files were loading.
I had to lowercase all my filenames, because calling a class "DatabaseObject" would try including "databaseobject. It will only require a file once. Because of that require once! It is never a good idea and a unconscienable concept to create the classes in the autoload function via eval. It should be a nice feature with these Exception, but i think anyone is able to handle it without this method although. Atm i dont realize for what this is good for In this instance, you should manually load classes required by the error handler.
So let me gather here for you what I've learned The obvious way of doing this is using Composer. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 9 years, 7 months ago.
Active 9 days ago. Viewed 87k times. Improve this question. Sliq Sliq I've added a basic example, based on the example above, into the PHP documentation. Hopefully things like this won't be so hard to find in future. Example 1 Autoload example. Constructors and Destructors ». Submit a Pull Request Report a Bug. Autoloading Classes Many developers writing object-oriented applications create one PHP source file per class definition.
Caution Prior to PHP 8. Example 2 Autoload other example This example attempts to load the interface ITest. Want to load NonLoadableClass. Unable to load NonLoadableClass. Example 4 Autoloading with exception handling - Missing custom exception This example throws an exception for a non-loadable, custom exception.
Want to load MissingException. Just use require , which will be better on performance as well as it does not have to check if it is unique. This is my autoloader for my PSR-4 clases.
I prefer to use composer's autoloader, but this works for legacy projects that can't use composer. You don't need exceptions to figure out if a class can be autoloaded.
This is much simpler. Autoloading plain functions is not supported by PHP at the time of writing. There is however a simple way to trick the autoloader to do this. The only thing that is needed is that the autoloader finds the searched class or any other autoloadable piece of code from the files it goes through and the whole file will be included to the runtime. Let's say you have a namespaced file for functions you wish to autoload.
Simply adding a class of the same name to that file with a single constant property is enough to trigger the autoloader to seek for the file.
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