PHP数据库问题，哪位大神给解答一下:echo 只能session显示出来，info显示不出来

<?php session_start();?>
<html>
<head>
<meta charset="UTF-8">
<title>现地现物改善</title>
<style>
h1
{
color:#03F;
text-align:center;
}
th
{
text-align:center;
color:black;
font:"Courier New", Courier, monospace;
}
.STYLE1 {font-size: 12px}
.STYLE3 {font-size: 12px; font-weight: bold; }
</style>
</head>
<body>
<?php 
include("conn/conn.php");
$query=mysqli_query($conn,"select * from fieldimprove where goodsource='$_SESSION[itemid]'"); 
$info=mysqli_fetch_array($query);
?>
<?php echo $info[goodsource];?>=
<?php echo $_SESSION[itemid];?>=
<?php echo $_SESSION[itemid];?>
<table width="776" height="100" align="center" bgcolor="#0099FF" cellpadding="1" cellspacing="1" >
    <tr>