Disable mid-line strip spaces?

Hello,
Is there a way to disable the stripping of spaces from the middle of a block of a code for PHP? The alignment of => is working for the first => but I would like to align all instances of => on a given line. When I add in spaces to format the second and third instances, those spaces are removed when running the formatter. If this isn't possible, I'll deal, just wondering if there's a setting I'm missing.

eg.)

``` php
protected $headers = [
'ssn' => ['title' => 'SSN', 'style' => 'text-align: center;'],
'first_name' => ['title' => 'First Name', 'style' => 'text-align: left;'],
];
```

would ideally become

``` php
protected $headers = [
'ssn' => ['title' => 'SSN', 'style' => 'text-align: center;'],
'first_name' => ['title' => 'First Name', 'style' => 'text-align: left;'],
];
```