sybase +php +apache 失败，

foxteng

在linux下安装sybase +php+apache成功，
但连接数据库失败!


<?php
$conn=125;
echo $conn;
$conn=sybase_connect("BKUP",'zhiliao','zhiliao');
sybase_select_db('zhiliao');
$qry=sybase_query("select * from fox",$conn);
echo sybase_result($qry,1,"name";
sybase_close($conn);
if ($conn)
{
echo "Sybase Connect Successfully!";
}
else
{
echo "Sybase Connect Failed!";
}
?>;
执行结果如下：

Sybase: A link to the server could not be established in /home/www/htdocs/index.php on line 5

Warning: 0 is not a Sybase link index in /home/www/htdocs/index.php on line 6

Warning: 0 is not a Sybase result index in /home/www/htdocs/index.php on line 7

Warning: 0 is not a Sybase link index in /home/www/htdocs/index.php on line 8
Sybase Connect Failed!



为什么？怎么办？