[wp-trac] [WordPress Trac] #11057: Notice: Undefined index: cat in canonical.php on line 128

[WordPress Trac]

#11057: Notice: Undefined index: cat in canonical.php on line 128
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 Reporter:  dd32              |       Owner:  westi    
     Type:  defect (bug)      |      Status:  new      
 Priority:  normal            |   Milestone:  2.9      
Component:  Warnings/Notices  |     Version:  2.9      
 Severity:  normal            |    Keywords:  has-patch
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Comment(by dd32):

 Thats what empty() is being used for.

 isset() And empty() do not issue the undefined warnings, Isset is good
 when you just want the index to be set, empty() is better when you want it
 to be set, and have a non-empty value.

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Ticket URL: <http://core.trac.wordpress.org/ticket/11057#comment:2>
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