title: What does "EGPCS" mean in PHP?
body: <p>I found the following code in <code>php.ini</code>. what does that mean?</p>
  
  <p>And "PHP registers" -- what is that?</p>
  
  <pre>
  ; This directive describes the order in which PHP registers GET, POST, Cookie,
  ; Environment and Built-in variables (G, P, C, E & S respectively, often
  ; referred to as EGPCS or GPC).  Registration is done from left to right, newer
  ; values override older values.
  variables_order = "EGPCS"
  </pre>