json_decode return "NULL" help me

Question

I get json string:

$response = '{"retcode":"0","retmsg":"OK","cre_id_enc":"","cre_type":"","fee_type":"1","listid":"1221085301201410240000001024","out_trade_no":"201410246763831","partner":"1221085301","pay_fee":"0","sign":"PTamau\x2BjkynA00cASKJ6Nd3QwFSBP44TKSqmmdCd\x2F\x2B0o8ViSt3fp5vQr0Fc73U42NhtImfnHzbynoUjURiNLW5O4hI61xkG\x2F97JRPRE0nHuvtAumqXfbVCsLveugE52HRZsJvm3EG7pL6GlhYf8ng6qxiUrDyn89PFVZ04Wd8Gk\x3D","total_fee":"1000000","unfreeze_fee":"1000000","user_name_enc":""}';

I use json_decode to convert this string to array,but it return "NULL". I found "sign":"PTamau\x2BjkynA00cASKJ6Nd3QwFSBP44TKSqmmdCd\x2F\x2B0o8ViSt3fp5vQr0Fc73U42NhtImfnHzbynoUjURiNLW5O4hI61xkG\x2F97JRPRE0nHuvtAumqXfbVCsLveugE52HRZsJvm3EG7pL6GlhYf8ng6qxiUrDyn89PFVZ04Wd8Gk\x3D","total_fee":"1000000" can't use json_decode. it contains ASCII code like '\x2F' , '\x2B', '\x3D'. so I try to convert to utf8, like this $response = iconv('ASCII', 'UTF-8//IGNORE', $response);. it's no useful.the response string still contains '\x2F' , '\x2B', '\x3D' and json_decode still return NULL.

someone can help me and forgive me my poor English! Thank you!

Community · Accepted Answer · 2017-05-23 11:50:44Z

1

According to an answer on a very similar question, you need to escape the backslashes:

$json = str_replace( '\x', '\\\\x', $response );

and then pass $json to json_decode

edited May 23, 2017 at 11:50

CommunityBot

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answered Oct 27, 2014 at 2:35

Vasilis

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1 Comment

GiGi Over a year ago

thank you! I found $json = str_replace( '\x', '\\\\x', $response ); is right

Amadan · Accepted Answer · 2014-10-27 02:36:15Z

0

The issue is the single quotes.

print_r('\x2F');
\x2F
print_r("\x2F");
/

Single quotes will not interpret the backslash sequence, which leaves you with malformed JSON which only allows \\ and \", AFAIK. If you already have the single-backslash string, do what Vasilis says.

answered Oct 27, 2014 at 2:36

Amadan

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