title: How to use default php classes in my namespace?
body: <p>I am using namespaces to resolve class name conflicts in two of the SDKs I am using in my project</p>
  
  <p>I have declared a name space in one of the file like </p>
  
  <pre><code>namespace temp;
  
  class abc extends stdClass
  {
    // my class def
  } 
  </code></pre>
  
  <p>when i am hitting this code i get error says temp/stdClass not found, so I need to use all default php structures, interfaces like iterators etc. so how can I import the default namespace of php or do any another setting I am missing?</p>