Doc #67599 [Nab]: case mismatch for json_encode between doc and reality

Edit report at https://bugs.php.net/bug.php?id=67599&edit=1 ID: 67599 User updated by: om+bugs dot php dot net at miakinen dot net Reported by: om+bugs dot php dot net at miakinen dot net Summary: case mismatch for json_encode between doc and reality Status: Not a bug Type: Documentation Problem Package: Documentation problem Operating System: Ubuntu 12.04 (not important) PHP Version: 5.4.30 Assigned To: sobak Block user comment: N Private report: N New Comment: Ok, and thank you! Previous Comments: ------------------------------------------------------------------------ [2014-07-10 09:16:30] sobak@php.net It probably needs futher clarification. I'll try to expand this example to show behavior you've described. ------------------------------------------------------------------------ [2014-07-10 08:28:39] om+bugs dot php dot net at miakinen dot net I'm sorry, it is in fact a bug in the program and not in the documentation. You are right that < and > are encoded in upper case, but they are the only ones that behave so ! See that program : <?php $json_string = '{ "ctrl1" : "\\u000B\\u000E\\u000F", "ctrl2" : "\\u001B\\u001C\\u001D\\u001E\\u001F", "other" : "<> élève grâce à 北京" }'; $json_value = json_decode($json_string); $json_string2= json_encode($json_value, JSON_HEX_TAG | JSON_PRETTY_PRINT); echo var_dump($json_string2); ?> The display is : string(160) "{ "ctrl1": "\u000b\u000e\u000f", "ctrl2": "\u001b\u001c\u001d\u001e\u001f", "other": "\u003C\u003E \u00e9l\u00e8ve gr\u00e2ce \u00e0 \u5317\u4eac" }" As you can see, the control characters are \u000b to \u001f, the French accented letters are \u00e0 to \u00e9, and the second chinese character is \u4eac, all in lower case. Only < and > are \u003C and \u003E in upper case. Note: In JavaScript, the JSON.stringify function also encodes the control characters in lower case; I don't know how to obtain hexadecimal code for characters above \u001f. ------------------------------------------------------------------------ [2014-07-10 07:23:53] sobak@php.net On 5.5.6 and 5.4.26 which I have currently available, output is the same as in the manual. Could you provide exact code which gave you result with those characters lowercased? ------------------------------------------------------------------------ [2014-07-09 20:44:50] om+bugs dot php dot net at miakinen dot net Description: ------------ --- From manual page: http://www.php.net/function.json-encode --- <cit.> Example #2 A json_encode() example showing some options in use ... echo "Tags: ", json_encode($a, JSON_HEX_TAG), "\n"; ... The above example will output: ... Tags: ["\u003Cfoo\u003E","'bar'","\"baz\"","&blong&","\u00e9"] </cit.> Actually, it won't output \u003C and \u003E (upper case) but \u003c and \u003e (lower case). Note that the same bug exists in French, and probably also in other languages. Test script: --------------- The test script is the one given in the documentation. ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=67599&edit=1