- print_r: documentation ( source)
- array_filter: documentation ( source)
<?php
$searchdata = array("id" => 1, "name" => "", "type" => "foo");
$conditions = array('Question.id' => $searchdata['id'], 'Question.name' => $searchdata['name'], "Question.type" => $searchdata['type']);
$conditions = array_filter($conditions);
print_r($conditions);