mysql_query总是查不到数据
现在问题是，我直接在数据库中粘贴那个$sql中的查询语句以正常查询，就是通过mysql_query（）查不到任何结果，这是什么原因？？？？
------解决方案--------------------
有无错误信息？
$result = mysql_query($sql, $db) or die(mysql_error()); 这样写看看是否有报错信息。
------解决方案--------------------
SELECT entries.*, categories.cat From entries, categories
WHERE entries.cat_id = categories.id
ORDER BY dateposted DESC
LIMIT 1
在phpmyadin中执行可以查询到吗？
------解决方案--------------------
$sq1 = "SELECT entries.*, categories.cat From entries, categories
WHERE entries.cat_id = categories.id
ORDER BY dateposted DESC
LIMIT 1
;
";
去掉LIMIT 1后面那个分号。
------解决方案--------------------
$sq1 = "SELECT entries.*, categories.cat From entries, categories
WHERE entries.cat_id = categories.id
ORDER BY dateposted DESC
LIMIT 1
;
";
多了；
------解决方案--------------------
先要确定SQL是不是正确连接，如果可以执行一条简单的查询语句看看数据库选择，表前缀是不是正确的，如果这些都是正确的，那就是SQL查询语句有问题
如果你是myphpadmin的话把查询条件复制进去执行下，就知道是不是语句错误了
$dbhost = "localhost";
$dbuser = "root";
$dbpassword = "";
$dbdatabase = "blogtastic";
$config_blogname = "Funny old world";
$config_author = "Pengsc";
$config_basedir = "htpp://127.0.0.1/blogtastic/";
?>
//require("config.php"); //include config.php
$db = mysql_connect($dbhost, $dbuser, $dbpassword);
if(!$db)
{
die('Could not connect: ' . mysql_error());
}
$db_selected = mysql_select_db($dbdatabase, $db);
if (!$db_selected)
{
die ("Can not use $dbdatabase : " . mysql_error());
}
?>
<?php echo $config_blogname; ?>
[home]
$sq1 = "SELECT entries.*, categories.cat From entries, categories
WHERE entries.cat_id = categories.id
ORDER BY dateposted DESC
LIMIT 1;";
mysql_query("set names 'utf8'"); //数据库输出编码 应该与你的数据库编码保持一致.南昌网站建设公司百恒网络PHP工程师建议用UTF-8 国际标准编码.
$result = mysql_query($sql, $db);//执行一条 MySQL 查询
if($result)
{
echo "ctergories and entries
";
echo "ctergories and entries
";
echo "ctergories and entries
";
echo "ctergories and entries
";
echo "ctergories and entries
";
$row = mysql_fetch_assoc($result); //从结果集中取得一行作为关联数组
print_r($row);
echo " . "'>" . $row['subject'] . "
";
echo "In . "‘>" . $row['cat'] . " - Posted on " . date("D jS F Y g.iA", strtotime($row['dateposted'])) . "";
echo "";
echo nl2br($row['body']);
echo "
";
}
else
{
print_r($row);
echo "no ctergories and entries";
}
?>