[wp-trac] Re: [WordPress Trac] #9059: Why is WP using empty()? (was: single_cat_title wont show category called 0)

[WordPress Trac]

#9059: Why is WP using empty()?
--------------------------+-------------------------------------------------
 Reporter:  noonoo        |       Owner:  anonymous               
     Type:  defect (bug)  |      Status:  new                     
 Priority:  low           |   Milestone:  2.8                     
Component:  Optimization  |     Version:  2.7                     
 Severity:  minor         |    Keywords:  needs-patch dev-feedback
--------------------------+-------------------------------------------------
Changes (by Denis-de-Bernardy):

  * keywords:  needs-patch => needs-patch dev-feedback
  * component:  Template => Optimization
  * milestone:  => 2.8


Comment:

 On a more general note, why in the bloody hell is empty() used throughout
 WP.

 I did a few tests on my end while wondering whether empty() or casting to
 boolean works fastest, and the latter beats the former by a landslide.

 {{{
 if ( !empty($foo) )
   ...
 }}}

 is slower than:

 {{{
 if ( !$foo )
   ...
 }}}

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Ticket URL: <http://core.trac.wordpress.org/ticket/9059#comment:2>
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