一个连接两个不同MYSQL数据库的PHP程序_PHP

echo "Connecting as mysql
\n";
$connection1 = mysql_connect('localhost', 'mysql', ') or die($php_errormsg);
echo "connection1 is $connection1
\n";
echo "Selecting test for mysql user
\n";
mysql_select_db('test', $connection1) or @die("Error " . $php_errormsg . mysql_error());
echo "Connection as joyce
\n";
$connection2 = mysql_connect('localhost', 'joyce', ') or die($php_errormsg);
echo "connection2 is $connection2
\n";
echo "Selecting books for joyce user
\n";
$db2 = mysql_select_db('techbizbookguide', $connection2) or die(mysql_error());
$query1 = "select foo from test";
$query2 = "select title, authorFirst, authorLast from bookinfo";
echo "Querying test
\n";
$users = mysql_query($query1, $connection1) or die(mysql_error());
echo "Querying books
\n";
$books = mysql_query($query2, $connection2) or die(mysql_error());
echo "Foos from test
\n";
while (list($foo) = mysql_fetch_row($users)){
echo $foo, "
\n";
}
echo "Books in techbizbookguide
\n";
while (list($title, $authorFirst, $authorLast) = mysql_fetch_row($books)){
//Use trim in case we have a book by "Madonna" or "Prince" or...
echo $title, ' by ', trim($authorFirst . ' ' . $authorLast), "
\n";
}
?>