Hi Connor,
the error says it already ;)
"Cannot use object of type stdClass as array"
The $params[0] at your PHP server should be accessed via the 'member-operator'
of PHP ('->'), not the array operator ('[]').
So instead of
$retval[] = "Client said: " . $params[0]["left"][0];
you should do something like
$retval[] = "Client said: " . $params[0]->left[0];
...when your JSON (RPC-)Data from the frontend was like this
{"left":["top","XYZ"]}
A bit more detailed:
<code>
/**
* Echoes the request
*
* @param {array} params
* An array containing the parameters to this method
*
* @param {JsonRpcError} error
* An object of class JsonRpcError.
*
* @return
* Success: The object containing the result of the method;
* Failure: null
*/
function method_echo($params, $error)
{
// ...error check removed for clarity...
$req = $params[0]; // {stdClass}
$leftVal = $req->left; // 2-element {array}
$first = $leftVal[0]; // {String}
$second= $leftVal[1]; // {String}
return $req; // Let's return the complete request parameter set!
}
</code>
General rule:
JSON | PHP
--------------+---------
["foo","bar"] | $x[0] === "foo"; $x[1] === "bar";
{key:"val"} | $foo->key === "val"
Cheers,
Peter
On 6/1/2012 4:57 PM Connor wrote:
> Hi,
> I have a problem with passing javascript objects to my PHP RPC Server as a
> parameter.
> Does anybody know whats wrong here ?
>
> thanks in advance,
> Connor.
>
> With the PHP RPC Server I've adjusted the echo method to:
>
> function method_echo($params, $error)
>
> {
>
> if (count($params) != 1)
>
> {
>
> $error->SetError(JsonRpcError_ParameterMismatch,
>
> "Expected 1 parameter; got " . count($params));
>
> return $error;
>
> }
>
>
>
> $retval[] = "Test";
>
> $retval[] = "Client said: " . $params[0]["left"][0];
>
> return $retval;
>
> }
>
>
> and passed the parameter by the qooxdoo application like
>
> try {
>
> var result = rpc.callSync("echo", {"left":["top","XYZ"]});
>
> alert("Result of sync call: " + result);
>
> } catch (exc) {
>
> alert("Exception during sync call: " + exc);
>
> }
>
>
> This causes an error message in php:
>
> /*
> ( ! ) Fatal error: Cannot use object of type stdClass as array in
> C:\XAMPP\xampp\htdocs\rpc\qooxdoo\services\class\tmlproxy\tml.php on line /59/
> Call Stack
> # Time Memory Function Location
> 1 0.0007 336568 {main}( ) ..\index.php*:*0
> 2 0.0091 772536 JsonRpcServer::run( ) ..\index.php*:*34
> 3 0.0121 780008 JsonRpcServer->start( )
> ..\JsonRpcServer.php*:*141
> 4 0.0121 780848 AbstractServer->start( )
> ..\JsonRpcServer.php*:*165
> 5 0.0409 1044480 JsonRpcServer->callServiceMethod( )
> ..\AbstractServer.php*:*599
> 6 0.0410 1044480 AbstractServer->callServiceMethod( )
> ..\JsonRpcServer.php*:*347
> 7 0.0410 1045944 class_tml->method_echo( )
> ..\AbstractServer.php*:*941
>
> */{ error: { "origin":1, "code":-1, "message":"Fatal PHP Error. See response
> content for error description "}}
>
> The Post seems to be correct:
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> POST index.php?nocache=1338562470553
>
> 200 OK
>
> localhost:8080
>
> 3.1 KB
>
> ::1:8080
>
>
> 51ms
> ParameterHeaderPostAntwortHTML
> JSON
>
>
>
>
>
> id
> 9
>
>
> method
> "echo"
>
>
> params
> [Object { left=[2]}]
>
>
> service
> "tmlproxy.tml"
>
> Quelle
> |{"service":"tmlproxy.tml","method":"echo","id":9,"params":[{"left":["top","XYZ"]}]}|
>
>
>
> 1 Anfrage
>
>
>
> 3.1 KB
>
> 51ms
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