爲什麼我的php不顯示任何內容？ （代碼包含在內）

Question

此代碼應提供表格貓的表格。但是，它顯示一個空白頁面。看起來查詢部分不起作用。它不能去'var_dump($results)'。但是，我可以使用已經評論的代碼創建表格。那麼問題是什麼？

<?php 
require_once "login.php"; 
$db_server = mysql_connect($db_hostname, $db_username, $db_password); 
if(!$db_server) 
    die("Unable to connect: ".mysql_error()); 
mysql_select_db($db_database, $db_server) or die("Unable to select a db: ".mysql_error()); 
/* 
$query = "CREATE TABLE cats 
(
    id SMALLINT NOT NULL AUTO_INCREMENT, 
    family VARCHAR(32) NOT NULL, 
    name VARCHAR(32) NOT NULL, 
    age TINYINT NOT NULL, 
    PRIMARY KEY (id) 
)"; 

mysql_query($query) or die("Create cats DB failed: ".mysql_error()); 
*/ 

$query = "DESCRIBE cats"; 
$results = mysql_query($query) 

var_dump($results); 

if(!$results) 
    die("Error-line22: ".mysql_error()); 
else 
    echo $results."<br />"; 

$rows = mysql_num_rows($results); 

echo "<table>"; 
echo " 
<tr> <th>Column</th> <th>Type</th> <th>NULL</th> <th>Key</th> </tr>"; 

for ($j = 0; $j < $rows; ++$j) 
{ 
    $row = mysql_fetch_row($results); 
    echo "<tr>"; 
    for ($k = 0; $k < 4; ++$k) 
     echo "<td>$row[$k]</td>"; 
    echo "</tr>"; 
} 

echo "</table>"; 

mysql_close($db_server); 
?> 

Answer 1

mysql_query（）行缺少';'在最後：

$query = "DESCRIBE cats"; 
$results = mysql_query($query); 

var_dump($results);