The intent of this guide is to reduce cognitive friction when scanning code from different authors. It does so by enumerating a shared set of rules and expectations about how to format PHP code.
The style rules herein are derived from commonalities among the various member projects. When various authors collaborate across multiple projects, it helps to have one set of guidelines to be used among all those projects. Thus, the benefit of this guide is not in the rules themselves, but in the sharing of those rules.
Using one or more multi-line arguments (i.e: arrays or anonymous functions) does not constitute splitting the argument list itself, therefore Section 4.6 is not automatically enforced. Arrays and anonymous functions are able to span multiple lines.
The following examples are perfectly valid in PSR-2:
<?php
somefunction($foo, $bar, [
// ...
], $baz);
$app->get('/hello/{name}', function ($name) use ($app) {
return 'Hello '.$app->escape($name);
});
When extending multiple interfaces, the list of extends should be treated the same as a list
of implements, as declared in Section 4.1.