--TEST--
Ensure hash_update_stream() always returns the same hash when $length = 0
--CREDITS--
Symeon Charalabides <symeon@systasis.com> - @phpdublin
--EXTENSIONS--
openssl
--FILE--
<?php

for ($j=0; $j<3; $j++)
{
    // Create pseudo-random hash
    $bytes = openssl_random_pseudo_bytes(15, $cstrong);
    $hash   = sha1(bin2hex($bytes));

    // Create temp file with hash
    $fp = tmpfile();
    fwrite($fp, $hash);
    rewind($fp);

    // Stream it with 0 length and output hash
    $ctx = hash_init('md5');
    hash_update_stream($ctx, $fp, 0);
    echo hash_final($ctx) . "\n";
}

?>
--EXPECT--
d41d8cd98f00b204e9800998ecf8427e
d41d8cd98f00b204e9800998ecf8427e
d41d8cd98f00b204e9800998ecf8427e