Edit report at https://bugs.php.net/bug.php?id=65082&edit=1
ID: 65082
Comment by: nikic@php.net
Reported by: masakielastic at gmail dot com
Summary: json_encode's option for replacing ill-formd byte
sequences with substitute cha
Status: Open
Type: Feature/Change Request
Package: JSON related
Operating System: All
PHP Version: 5.5.0
Block user comment: N
Private report: N
New Comment:
It's currently possible to get a partial output using JSON_PARTIAL_OUTPUT_ON_ERROR. This will
replace invalid UTF8 strings with NULL though. It probably would make sense to have an alternative
option that inserts the substitution character.
Previous Comments:
------------------------------------------------------------------------
[2013-06-21 05:31:34] masakielastic at gmail dot com
Description:
------------
json_encode returns false if the string contains ill-formed byte
sequences. It is hard to find the problem since a lot of web applications don't
expect the existence of ill-formed byte sequences. The one example is Symfony's
JsonResponse class.
https://github.com/symfony/symfony/blob/master/src/Symfony/Component/HttpFoundat
ion/JsonResponse.php#L83
Introducing json_encode's option for replacing ill-formd byte sequences with
substitute characters (such as U+FFFD) save writing the logic.
function json_encode2($value, $options, $depth)
{
if (is_scalar($value)) {
return json_encode($value, $options, $depth);
}
$value2 = [];
foreach ($value as $key => $elm) {
$value2[str_scrub($key)] = str_scrub($elm);
}
return json_encode($value2, $options, $depth);
}
// https://bugs.php.net/bug.php?id=65081
function str_scrub($str, $encoding = 'UTF-8')
{
return htmlspecialchars_decode(htmlspecialchars($str, ENT_SUBSTITUTE,
$encoding));
}
The precedent example is htmlspecialchars's ENT_SUBSTITUTE option which was
introduced
in PHP 5.4. json_encode shares the part of logic used such as php_next_utf8_char
by htmlspecialchars since PHP 5.5.
https://github.com/php/php-src/blob/master/ext/json/json.c#L369
Another reason for introducing the option is existence of JsonSerializable
interface.
Accessing jsonSerialize method's values come from private properties is hard
or impossbile.
The one of names of candiates for the option is JSON_SUBSTITUTE similar to
htmlspecialchar's ENT_SUBSTITUTE option.
json_encode($object, JSON_SUBSTITUTE);
------------------------------------------------------------------------
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Edit this bug report at https://bugs.php.net/bug.php?id=65082&edit=1