Comments
Comments SHOULD be avoided as much as possible by writing expressive code. If you do need to use a comment to explain the what, then refactor the code. If you need to explain the reason (why), then format the comments as follows:
PHP
// There should be a space before a single line comment.
/*
* If you need to explain a lot you can use a comment block. Notice the
* single * on the first line. Comment blocks don’t need to be three
* lines long or three characters shorter than the previous line.
*/