Description:
------------
The documentation for stream_select() says ( 
http://www.php.net/manual/en/function.stream-select.php )

"The stream_select() function accepts arrays of streams and waits for them to 
change status."

But that is not true. stream_select will return immediately if the read buffer of 
a stream is non-empty. The read buffer does not have to change status or length 
for stream_select() to return.

Obviously the current behaviour of stream_select() is correct, and the 
documentation is wrong. The current behaviour is also how select() (which the 
documentation says stream_select behaves like) works.

Test script:
---------------
<?php

function my_passthru2() {
  $cmd = sprintf("echo a;sleep 100000");
  $stream = popen($cmd, "r");
  $stream_array = Array($stream);
  $dummy_array = null;
  sleep(1);
  echo "after sleep";
  stream_select($stream_array, $dummy_array, $dummy_array, 10);
  echo "after select!";
}

my_passthru2();

?>

Expected result:
----------------
Following the documentation: "after select!" should be printed 10 seconds after 
"after sleep", since the stream does not change status after stream_select is 
called (the read buffer will always contain "a").

Actual result:
--------------
"after select!" is printed immediately after "after sleep".