Another idea. Practical exercises could be submitted and rated as User Contributed Notes in php manual:
https://secure.php.net/manual/en/language.variables.variable.php
Tutorials, Courses, Bootcamps and Conferences
Tutorials, Courses, Bootcamps and Conferences
Another idea. Practical exercises could be submitted and rated as User Contributed Notes in php manual:
https://secure.php.net/manual/en/language.variables.variable.php