PSR standard for PHP arrow functions?

Hey guys! I was just wondering if there's any PSR standard regarding PHP arrow functions. In the PHP doc, the RFC and some articles they use the functionality as follows: fn() => 'value', but I haven't found anything PSR related that states a "SHOULD" or "MUST" usage.

I'm surprised that everything I see is fn() with no space between fn and the parentheses when PSR-12 states that (long form) closures should be written function () with a space between function and the parentheses.

Thanks in advance!

jlrdw

5 years ago

Level 75

If there are none, I would probably go by the PHP manual and their examples.

Edit: found this in psr 12.

When space is permitted around an operator, multiple spaces MAY be used for readability purposes.

All operators not described here are left undefined.

piljac1

5 years ago

Best Answer

Level 28

Thanks for your input! I found fn ($invoice) => $invoice->submit() here in the Laravel doc, so I will consider that as the way to go moving forward, since I'm working in Laravel projects, except if a robust standard is implemented in the future.

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