[wp-trac] [WordPress Trac] #30875: enforce integers in add_filter priority

[WordPress Trac]

#30875: enforce integers in add_filter priority
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 Reporter:  drrobotnik    |      Owner:
     Type:  defect (bug)  |     Status:  new
 Priority:  normal        |  Milestone:  Awaiting Review
Component:  General       |    Version:  4.1
 Severity:  normal        |   Keywords:
  Focuses:                |
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 The docs say that add_filter should use int values, but there is nothing
 enforcing this. Currently the following is perfectly valid and works as
 you'd expect an array to sort keys.

 add_action('wp_head', 'wrong1', '1');
 add_action('wp_head', 'wrong2', '1.7');
 add_action('wp_head', 'wrong3', '1.5');
 add_action('wp_head', 'wrong4', 'mickeymouse');
 add_action('wp_head', 'wrong5', 'donaldduck');

 http://cloudup.com/cfqa31pltEE

 I've attached a patch that simply returns false, because if you simply
 typecast to int, the function who is doing it wrong, will get priority.

 Props jorbin for clearly understanding integers.

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Ticket URL: <https://core.trac.wordpress.org/ticket/30875>
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