php - PSR-2 是否需要垂直对齐？

Question

这两者之间允许什么:

$value = 'value';
$user = 'John';
$timestamp = 1480927909;
$day = date('Y-m-d', $timestamp);

或

$value     = 'value';
$user      = 'John';
$timestamp = 1480927909;
$day       = date('Y-m-d', $timestamp);

Answer 1

PSR-2 没有针对这种行间对齐的具体规则:

来自PSR-2 Conclusion :

There are many elements of style and practice intentionally omitted by this guide. These include but are not limited to:

• Declaration of global variables and global constants
• Declaration of functions
• Operators and assignment
• Inter-line alignment
• Comments and documentation blocks
• Class name prefixes and suffixes
• Best practices

Future recommendations MAY revise and extend this guide to address those or other elements of style and practice.

就其值(value)而言，行间对齐是 discussed for PSR-1由 PHP-FIG Group 开发，但已从最终版本中删除:

The way-back original long-form PSR-1 covered inter-line alignment, globals, ternaries, assignment, and lots of other things. Those ended up getting removed for various reasons; their epitaph is at the conclusion of PSR-2.