Why CURLOPT_POSTFIELDS does not accept json_encode? - php

Question

CURLOPT_POSTFIELDS does not accept json_encode, but if I directly write the json in the CURLOPT_POSTFIELDS if it is entered
This returns an error
{"error":"bad_request","reason":"Request body must be a JSON object"}
$bd = "fiscont_db_catalogo_cuentas";
$ch = curl_init();
$document ='{"docs":[{"key":"baz","name":"bazzel"},{"key":"bar","name":"barry"}]}';
$json = json_encode($document);
echo $json;
curl_setopt($ch, CURLOPT_URL, 'http://127.0.0.1:5984/'.$bd.'/_bulk_docs');
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST'); /* or PUT */
curl_setopt($ch, CURLOPT_POSTFIELDS, $json);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-type: application/json',
'Accept: */*'
));
curl_setopt($ch, CURLOPT_USERPWD, 'root:addc1243c');
$response = curl_exec($ch);
echo $response;
curl_close($ch);
but this is returning :
[{"ok":true,"id":"8b3c672ffd4b8dcd7da313e9e9011243","rev":"1-f5f3f3e496c72307975a69c73fd53d42"},{"ok":true,"id":"8b3c672ffd4b8dcd7da313e9e9011c5a","rev":"1-8ad0e70d5e6edd474ec190eac2376bde"}]
$bd = "fiscont_db_catalogo_cuentas";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'http://127.0.0.1:5984/'.$bd.'/_bulk_docs');
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST'); /* or PUT */
curl_setopt($ch, CURLOPT_POSTFIELDS, "{\"docs\":[{\"key\":\"baz\",\"name\":\"bazzel\"},{\"key\":\"bar\",\"name\":\"barry\"}]}");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
'Content-type: application/json',
'Accept: */*'
));
curl_setopt($ch, CURLOPT_USERPWD, 'root:addc1243c');
$response = curl_exec($ch);
echo $response;
curl_close($ch);

Answer 1

json_encode takes an array or an object as a parameter. In your example, you encode a JSON string to JSON which doesn't make sens.
If you replace your line by this:
$document =['docs' => [['key'=>'baz','name'=>'bazzel'],['key'=>'bar','name'=>'barry']];
It will correctly convert your PHP associative array to JSON.