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json encode utf8 error

i have problem encoding this character with json_encode

http://www.fileformat.info/info/unicode/char/92/index.htm

first it give me this error JSON_ERROR_UTF8 which is

'Malformed UTF-8 characters, possibly incorrectly encoded'

so tried this function utf8_encode() before json_encode

now return this result '\u0092'

so i found this one

 function jsonRemoveUnicodeSequences($struct) {
 return preg_replace("/\\\\u([a-f0-9]{4})/e", "iconv('UCS-4LE','UTF-8',pack('V', hexdec('U1ドル')))", json_encode($struct));
 }

the character show up but with other one

Â’

also tried htmlentities then html_entity_decode

with no result

Answer*

If you look at the link you included to the character U+0092, it is a control character, and it is also known as PRIVATE USE TWO. Its existence in your string means that your string is almost certainly not a UTF-8 string. Instead, it is probably a Windows-specific encoding, likely [Windows-1252][1] if your text is English, in which 0x92 is a "smart quote" apostrophe, also known as a right single quotation mark. The Unicode equivalent of this character is U+2019.

Thus your data source is not giving you UTF-8 text. Either you can fix the source data to be UTF-8 encoded, or you can convert the text you receive. For example, the output of

 echo iconv('Windows-1252','UTF-8', "\x92")

is

 ’

which is probably what you want. However, you want to make sure that all of your input is the same encoding. If some of your data is UTF-8 and some is Windows-1252, the above iconv call will properly handle Windows-1252 encoded apostrophes, but it will convert UTF-8 encoded apostrophes to

 â€™

 [1]: https://en.wikipedia.org/wiki/Windows-1252

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json encode utf8 error

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