一个连接两个不同MYSQL数据库的PHP程序

  


    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";  

    }  

?>