PHP spl_autoload_register inheritance

Question

I have a page called house.php and a class in house.class.php. When I create an instace of that class in house.php it works. Now I want to make a chair.php file and a class Chair that extends House in house.class.php. Where should I put that class? spl_autoload_register doesn't find my class since its name isn't the same with the file. How can I improve function AutoloadClass ? Should I create a chair.class.php and use an require with house.class.php?

spl_autoload_register(null, false); spl_autoload_extensions('.php, .class.php'); function AutoloadClass($class){ $filename = $class.'.class.php'; if (!file_exists($filename)) { return false; } include $filename; } spl_autoload_register('AutoloadClass');

Thank you

possible duplicate of PHP spl_autoload

tlenss
– tlenss

2013-07-21 12:34:25 +00:00
Commented Jul 21, 2013 at 12:34 — tlenss
– tlenss, Commented Jul 21, 2013 at 12:34

Community · Accepted Answer · 2023-11-17 19:32:19Z

Since you're calling spl_autoload_extensions you don't need to manually add .class.php. Further you can try calling spl_autoload_register with no arguments. It then work with https://www.php.net/manual/en/function.spl-autoload.php which should work out of the box:

set_include_path(__DIR__); spl_autoload_extensions('.php,.class.php'); spl_autoload_register();

spl_autoload will do the extension checking. Else you don't need spl_autoload_extensions and have to check for all extensions by yourself.

Another problem that you might face is that your class name is uppercase and your file name is lowercase. I would go with PSR-0 standard so that class names and file names match. So don't add .class.php.

House -> House.php Chair -> Chair.php

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