Determining what classes are defined in a PHP class file

Question

Given that each PHP file in our project contains a single class definition, how can I determine what class or classes are defined within the file?

I know I could jus

Answer 1

If you just want to check a file without loading it use token_get_all():

Basically, this is a simple finite state machine. In PHP the sequence of tokens will be:

• T_CLASS: 'class' keyword;
• T_WHITESPACE: space(s) after 'class';
• T_STRING: name of class.

So this code will handle any weird spacing or newlines you get just fine because it's using the same parser PHP uses to execute the file. If token_get_all() can't parse it, neither can PHP.

By the way, you use token_name() to turn a token number into it's constant name.

Here is my c2.php:

Output:

Found class: MyClass
Found class: MyOtherClass