May I directly read the RAW POST-METHOD informations?

 In Perl, we use 
      read(STDIN, $buffer, $ENV{"CONTENT_LENGTH"});
 but in php, I use
 <?
    $fs = fopen("php://stdin", "r");
    $contents = fread($fs, $CONTENT_LENGTH);
    fclose($fs);
 ?> seems not to work.


 I got this problem when I EXPORT FAVORITE by JavaScript.
 informations are passed by POST method. We know that 
 variables from anywhere are stored in some associative arrays, maybe $GLOBALS, $_POST , or others. But the informations passed by POST is a huge string, should not be parsed as parse_str() do.

  if it's passwd by GET method, I can use $GLOBALS['QUERY_STRING'] to get them.
  but how can I read raw POST data?

  thanks to read my post.