PHP json_encode returns null value from unicode character

Question

I have the following array:

Array
(
    [BookDateID] => 4
    [HotelName] => Adams’ Inn
)

Output:

{"BookDateID":"4","HotelName":null}

Any magic?

BTW, I have an alternative solution by looping thru each array and have them mb_convert_encoding(str,'HTML-ENTITIES') but I want the character remains the same as I have to insert this into a DB.

foreach($array as $key=>$value){
    $array[$key] = mb_convert_encoding($value,'HTML-ENTITIES');
}

Your PHP file may not be in the "correct" encoding: 3v4l.org/ipQuW — Passerby
– Passerby, Commented Feb 14, 2013 at 5:05
@Passerby what do you mean by that? Do I need to set some encoding on my php.ini or just ini_set()? Something like default_charset? — hodl
– hodl, Commented Feb 14, 2013 at 5:38
This may not be some configuration problem; it's your PHP file's encoding that may matters. Check your PHP file's encoding with some editor (Notepad2, Notepad++, etc.) and make sure it's UTF-8. — Passerby
– Passerby, Commented Feb 14, 2013 at 5:42
@Passerby I'm using sublime. I am pretty sure I am in correct file encoding from my text editor. — hodl
– hodl, Commented Feb 14, 2013 at 7:56
mb_convert_encoding by default uses mb_internal_encoding as source encoding, which by default is ISO-8859-1. Try mb_detect_encoding($array["HotelName"],"UTF-8, ISO-8859-1") (or add other encoding according to your location) to see if the string is actually in UTF-8. — Passerby
– Passerby, Commented Feb 14, 2013 at 8:10

deceze · Accepted Answer · 2013-02-14 06:35:51Z

2

json_encode needs UTF-8 encoded data. Make sure the data is UTF-8 encoded; currently it's likely Latin-1 encoded. How to do this depends on where the data comes from. Read What Every Programmer Absolutely, Positively Needs To Know About Encodings And Character Sets To Work With Text and Handling Unicode Front To Back In A Web App.

answered Feb 14, 2013 at 6:35

deceze♦

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2 Comments

hodl Over a year ago

I tried ini_set('default_charset','utf-8') but ’ becomes ?. Anyway, my alternative solutions looks good but would be better if I don't have to mb_convert_encoding() encase there's no mbstring installed.

deceze Over a year ago

That ini setting by itself doesn't do much. What encoding is your data in? If you can't answer that, read the beforelinked articles again.

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