Get class name from file

Question

I have a php file which contains only one class. how can I know what class is there by knowing the filename? I know I can do something with regexp matching but is there a st

Answer 1

You can make PHP do the work by just including the file and get the last declared class:

$file = 'class.php'; # contains class Foo

include($file);
$classes = get_declared_classes();
$class = end($classes);
echo $class; # Foo

If you need to isolate that, wrap it into a commandline script and execute it via shell_exec:

$file = 'class.php'; # contains class Foo

$class = shell_exec("php -r \"include('$file'); echo end(get_declared_classes());\"");    
echo $class; # Foo

If you dislike commandline scripts, you can do it like in this question, however that code does not reflect namespaces.