[wp-trac] [WordPress Trac] #39678: get_term_by slug with "0" as value

[WordPress Trac]

#39678: get_term_by slug with "0" as value
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 Reporter:  fausonealessio  |      Owner:
     Type:  defect (bug)    |     Status:  new
 Priority:  normal          |  Milestone:  Awaiting Review
Component:  Taxonomy        |    Version:  4.7
 Severity:  normal          |   Keywords:
  Focuses:                  |
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 Executing this code

 get_term_by('slug','0','taxonomy_name')

 my expectations were to obtain a taxonomy term, considering that one
 actually exists in my database, but instead the function returned false
 due to the PHP empty function returning true (see
 https://core.trac.wordpress.org/browser/tags/4.7/src/wp-
 includes/taxonomy.php#L844).
 The empty function behaves according to documentation
 (http://php.net/manual/en/function.empty.php) but the string "0" should be
 accepted to be searched if it is possible to use it to create a taxonomy
 term.

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Ticket URL: <https://core.trac.wordpress.org/ticket/39678>
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