I would suggest using this in your PHP script:

  header( "Last-Modified: " . gmdate( "D, j M Y H:i:s" ) . " GMT" );
  header( "Expires: " . gmdate( "D, j M Y H:i:s", time() ) . " GMT" );
  header( "Cache-Control: no-store, no-cache, must-revalidate" ); //
HTTP/1.1
  header( "Cache-Control: post-check=0, pre-check=0", FALSE );
  header( "Pragma: no-cache" ); // HTTP/1.0
  header('X-JSON:('.$json.')');

where $json is your JSON.

Now Prototype will automatically eval your JSON

onSuccess: function(transport.response) {
  alert(response.from_firstName.isEmpty);
}

will pop up an alert box stating "Value is empty, but a non-empty
value is required".

The ouput from your PHP script is not returning an array.  I think you
might be looking to return something like:

{arUsers:[{fname:'Joe', lname:'User', email:'[EMAIL PROTECTED]'},
{fname:'Jane', lname:'Doe', email:'[EMAIL PROTECTED]'}]}

Now you could use each to iterate over the elements you will find in
response.arUsers.

response.arUsers.each(function(s) {
  // do stuff like sign them up for spam
}

HTH
Happy Prototyping
Bernie


On Apr 23, 6:29 pm, Luke The Duke <[EMAIL PROTECTED]> wrote:
> Hi all
>
> Iam new to Prototype and I have the following question:
>
> A PHP Script (Zend Framwork) returns the following JSON Code after
> submitting a Form:
>
> {"from_firstName":{"isEmpty":"Value is empty, but a non-empty value is
> required"},"from_lastName":{"isEmpty":"Value is empty, but a non-empty
> value is required"},"from_email":{"isEmpty":"Value is empty, but a non-
> empty value is required"},"to_firstName":{"isEmpty":"Value is empty,
> but a non-empty value is required"},"to_lastName":{"isEmpty":"Value is
> empty, but a non-empty value is required"},"to_email":
> {"isEmpty":"Value is empty, but a non-empty value is required"}}
>
> Now the idea is to draw a red border around all the formfields
> mentioned in the JSON Code like 'from_firstName', 'from_lastName' etc.
>
> So i thought I could proceed the data with evalJSON() to an object and
> than use the each() method. I tried the following code:
>
> handleJSONResponse:function(transport) {
>     var data = transport.responseText.evalJSON(true);
>     data.each(function(s) {
>        alert(s);
>     });
>
> }
>
> but nothing happens.. no error, nothing. I can
> alert(transport.responseText) which returns me the JSON Code above.
> But each() doesnt return me anything.
>
> What do I do wrong?
>
> Thanks for your help!
>
> Luke The Duke
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