[wp-trac] [WordPress Trac] #31061: Accept FALSE as valid value from "pre_option_" hook

[WordPress Trac]

#31061: Accept FALSE as valid value from "pre_option_" hook
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 Reporter:  martin.krcho        |       Owner:
     Type:  enhancement         |      Status:  new
 Priority:  normal              |   Milestone:  Awaiting Review
Component:  Options, Meta APIs  |     Version:  4.1
 Severity:  normal              |  Resolution:
 Keywords:  close               |     Focuses:  performance
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Comment (by boonebgorges):

 > how would I go about caching options values that are not autoloaded and
 can return false as a valid option value? Is there anything I am missing
 or is it simply not possible using current latest WordPress version?

 It's not possible to do it in a reliable way. The best I can suggest is
 that you cache an empty string (or even a string 'false'), and convert it
 to `false` as necessary where it's being consumed. I understand that this
 is pretty inconvenient and ugly. But our options system is designed around
 a MySQL key-value store, and boolean `false` is translated to an empty
 string when it's stored in the database like this. The fact that you can
 put a boolean directly into the persistent cache without having it
 converted to a string is sort of an undocumented feature.

 Long term, we might consider augmenting the options/meta schema so as to
 store the data type as well: a column 'type' that stores 'int', 'bool',
 etc. Then functions like `get_option()` etc would have a `$strict`
 parameter, and our cache implementation would be type-sensitive.

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Ticket URL: <https://core.trac.wordpress.org/ticket/31061#comment:8>
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