[wp-trac] [WordPress Trac] #48082: Replace `dirname(__FILE__)` with `__DIR__` (Performance improvement, massive patch)

[WordPress Trac]

#48082: Replace `dirname(__FILE__)` with `__DIR__` (Performance improvement,
massive patch)
------------------------------+--------------------------------------------
 Reporter:  ayeshrajans       |       Owner:  SergeyBiryukov
     Type:  enhancement       |      Status:  closed
 Priority:  normal            |   Milestone:  5.4
Component:  General           |     Version:
 Severity:  minor             |  Resolution:  fixed
 Keywords:  has-patch needs-  |     Focuses:  performance, coding-standards
  testing                     |
------------------------------+--------------------------------------------
Changes (by SergeyBiryukov):

 * status:  reviewing => closed
 * resolution:   => fixed


Comment:

 In [changeset:"47198" 47198]:
 {{{
 #!CommitTicketReference repository="" revision="47198"
 Code Modernization: Replace `dirname( __FILE__ )` calls with `__DIR__`
 magic constant.

 This avoids the performance overhead of the function call every time
 `dirname( __FILE__ )` was used instead of `__DIR__`.

 This commit also includes:

 * Removing unnecessary parentheses from `include`/`require` statements.
 These are language constructs, not function calls.
 * Replacing `include` statements for several files with `require_once`,
 for consistency:
  * `wp-admin/admin-header.php`
  * `wp-admin/admin-footer.php`
  * `wp-includes/version.php`

 Props ayeshrajans, desrosj, valentinbora, jrf, joostdevalk, netweb.
 Fixes #48082.
 }}}

-- 
Ticket URL: <https://core.trac.wordpress.org/ticket/48082#comment:13>
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