note 115655 added to function.json-encode

If you're wondering whether a JSON string can be an analog of an XML document, the answer is probably "nope." XML supports attributes, but JSON does not. A JSON string generated by json_encode(), when called on a SimpleXML object, will not have the attributes and no error or exception will issue - the original data will simply be lost. To see this in action: <?php error_reporting(E_ALL); echo '<pre>'; // STARTING FROM XML $xml = <<<EOD <?xml version="1.0" ?> <ingredients> <ingredient> <name>tomatoes</name> <quantity type="cup">4</quantity> </ingredient> <ingredient> <name>salt</name> <quantity type="tablespoon">2</quantity> </ingredient> </ingredients> EOD; // CREATES AN ARRAY OF SimpleXMLElement OBJECTS $obj = SimpleXML_Load_String($xml); var_dump($obj); echo PHP_EOL; // SHOW THE ATTRIBUTES HIDDEN IN THE SimpleXMLElement OBJECTS foreach ($obj as $sub) { echo PHP_EOL . (string)$sub->quantity . ' ' . (string)$sub->quantity['type']; } echo PHP_EOL; // USING THE OBJECT, CREATE A JSON STRING $jso = json_encode($obj); echo htmlentities($jso); // 'type' IS LOST echo PHP_EOL; ---- Server IP: 64.71.164.2 Probable Submitter: 98.169.66.145 ---- Manual Page -- http://php.net/manual/en/function.json-encode.php Edit -- https://master.php.net/note/edit/115655 Del: integrated -- https://master.php.net/note/delete/115655/integrated Del: useless -- https://master.php.net/note/delete/115655/useless Del: bad code -- https://master.php.net/note/delete/115655/bad+code Del: spam -- https://master.php.net/note/delete/115655/spam Del: non-english -- https://master.php.net/note/delete/115655/non-english Del: in docs -- https://master.php.net/note/delete/115655/in+docs Del: other reasons-- https://master.php.net/note/delete/115655 Reject -- https://master.php.net/note/reject/115655 Search -- https://master.php.net/manage/user-notes.php