[wp-trac] [WordPress Trac] #28786: wp_send_json silently fails on non UTF-8 strings

[WordPress Trac]

#28786: wp_send_json silently fails on non UTF-8 strings
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 Reporter:  pento             |       Owner:  pento
     Type:  defect (bug)      |      Status:  reopened
 Priority:  normal            |   Milestone:  4.1
Component:  Formatting        |     Version:  3.5
 Severity:  normal            |  Resolution:
 Keywords:  has-patch commit  |     Focuses:
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Comment (by azaozz):

 Replying to [comment:38 pento]:
 > ...(to return 0 or an empty string on failure, perhaps)

 Right, also a "proper" JSON encoded value is `'false'`, `'0'`, `'""'`,
 etc. On the JS side JSON.parse() and jQuery.parseJSON() throw errors on
 empty string, int, etc.

 We should also handle the `false` returned from `wp_json_encode()` in
 `wp_send_json_success()` and `wp_send_json_error()`.

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Ticket URL: <https://core.trac.wordpress.org/ticket/28786#comment:39>
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