Clean way to throw php exception through jquery/ajax and json

Question

Is there a clean, easy way to throw php exceptions through a json response jquery/ajax call.

Answer 1

If all the errors should be treated in the same way (showing a dialog for example). You can do it this way:

PHP End:

public function throwJsonException($msg) {
    echo json_encode(array('error'=> true, 'msg' => $msg));
}

throwJsonException('login invalid!');

jQuery End:

$(document).ajaxSuccess(function(evt, request, settings){
    var data=request.responseText;
    if (data.length>0) {
        var resp=$.parseJSON(data);
        if (resp.error)
        {
            showDialog(resp.msg);
            return;
        }                   
    }    
});