Level 20
As you can see from the breadcrumbs (at the top of the page under the main menu), the ReflectionClass page is under Function Reference.
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The php website itself just have page that shows a few built in classes: https://www.php.net/manual/en/reserved.interfaces.php or https://www.php.net/manual/en/reserved.classes.php
But I'm sure there is a lot of classes that exist but they are not in the above links, For example ReflectionClass has it own page.
So is there a place to able see all built in classes (or interfaces) ?
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