[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 pento):

 `wp_json_encode()` returns `false` on failure, to match the behaviour of
 `json_encode()`.

 I'm not wild about changing `wp_json_encode()`'s behaviour (to return 0 or
 an empty string on failure, perhaps), though there's possibly value in
 having a function that always returns valid JSON, I think there being a
 clear "this thing failed to encode" return value is more valuable.

 I think our better option is to fix the places that call
 `wp_json_encode()`, to ensure proper type checking.

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Ticket URL: <https://core.trac.wordpress.org/ticket/28786#comment:38>
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