note 9147 added to Socket functions

Looking at the socket.c code at the function PHP_FUNCTION(read) for the 4.0.2 version it appears there is a call to emalloc to allocate a temporary buffer large enough to hold the requested read length. When is this free'd? I have run into memory limits by using this function to pull several megabytes of data over with the end result being a PHP failure prior to completing the data transfer, due to memory limits being exceeded. Can some one point me to the cure??? http://www.php.net/manual/ref.sockets.php