3 ms·

Just out of curiosity, could you expand on that a little more? I'm currently in the process of ripping my hair out with json_encode issues. We send back a json

Just out of curiosity, could you expand on that a little more? I'm currently in the process of ripping my hair out with json_encode issues. We send back a json_encoded array containing a property "html" with html markup to be injected back into a contenteditable div. Originally I had a ton of problems if there happened to be the invisible unicode character in there (php's str functions could not find/replace this character no matter what I tried). However, this is the first I've seen those flags the GP mentioned.

krapp 13y ago
If you look up the json_encode function on php.net it lists the flags. As I understand it there's a difference between the encoding allowed in javascript and the encoding allowed in JSON which means certain characters which would be valid in a javascript object don't necessarily work in JSON, so you end up having to escape everything possible. There's one flag (JSON_ESCAPE_UNICODE) which doesn't work on the version of PHP I develop on so I ended up applying code listed in the comments. This also adds some cruft similar to what google/facebook etc use if you want it. I haven't had any issues with it yet but, being what it is, there may be a more elegant way to accomplish it. function AsJSON($arr, $cruft=null){ //convmap since 0x80 char codes so it takes all multibyte codes (above ASCII 127). //So such characters are being "hidden" from normal json_encoding array_walk_recursive($arr, function (&$item, $key) { if (is_string($item)){ $item = mb_encode_numericentity($item, array (0x80, 0xffff, 0, 0xffff), 'UTF-8'); } }); $JSON = mb_decode_numericentity( json_encode($arr, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP), array (0x80, 0xffff, 0, 0xffff), 'UTF-8' ); if(json_last_error() === JSON_ERROR_NONE){ return $cruft.$JSON; } } You might also consider looking at the ctype_* functions if you haven't.
datphp 13y ago
Seeing the type of content, the character in question might very well be a BOM. You can identify them by pack("CCC",0xef,0xbb,0xbf), encoding to ""

krapp 13y ago

If you look up the json_encode function on php.net it lists the flags. As I understand it there's a difference between the encoding allowed in javascript and the encoding allowed in JSON which means certain characters which would be valid in a javascript object don't necessarily work in JSON, so you end up having to escape everything possible. There's one flag (JSON_ESCAPE_UNICODE) which doesn't work on the version of PHP I develop on so I ended up applying code listed in the comments. This also adds some cruft similar to what google/facebook etc use if you want it. I haven't had any issues with it yet but, being what it is, there may be a more elegant way to accomplish it. function AsJSON($arr, $cruft=null){ //convmap since 0x80 char codes so it takes all multibyte codes (above ASCII 127). //So such characters are being "hidden" from normal json_encoding array_walk_recursive($arr, function (&$item, $key) { if (is_string($item)){ $item = mb_encode_numericentity($item, array (0x80, 0xffff, 0, 0xffff), 'UTF-8'); } }); $JSON = mb_decode_numericentity( json_encode($arr, JSON_HEX_TAG | JSON_HEX_APOS | JSON_HEX_QUOT | JSON_HEX_AMP), array (0x80, 0xffff, 0, 0xffff), 'UTF-8' ); if(json_last_error() === JSON_ERROR_NONE){ return $cruft.$JSON; } } You might also consider looking at the ctype_* functions if you haven't.

datphp 13y ago

Seeing the type of content, the character in question might very well be a BOM. You can identify them by pack("CCC",0xef,0xbb,0xbf), encoding to ""