PHP方法链接：PSR是否指定箭头对齐？

Question

Is there any strict requirement if chaining should be aligned starting with the class vs. methods only?

Chaining with only methods being aligned:

$this->fooService
    ->doBar()
    ->doBaz();

Above example shows the alignment just within methods.

Chaining with everything being aligned:

$this
    ->fooService
    ->doBar()
    ->doBaz();

This question is not opinion based as I'm asking about coding standard defined by a PHP community.

Answer 1

The PSR and PSR 2 do not specify anything regarding method chaining from what I have read. PSR concludes that "interline alignment" is intentionally left out