【发布时间】：2023-03-06 19:05:01
【问题描述】：
在在线 IDE 云中显示来自我的数据库的信息时遇到了一些问题 9。我遵循了一些关于连接到数据库和检索信息的指南，但它似乎没有进入实际上将信息回显到的 while 循环浏览器。
PHP
$host = getenv("REMOTE_ADDR");
$username = "tannerhallman1";
$password = "";
$database = "Charlotte";
$dbport = 3306;
// Create connection
$db = mysqli_connect($host, $username, $password, $database, $dbport);
// Check connection
if ($db->connect_error) {
die("Connection failed: " . $db->connect_error);
}
echo "Connected successfully my dude(".$db->host_info.")";
?>
<?php
$sql = "SELECT * FROM lenders";
$records = mysql_query($sql);
echo "$records"
?>
<html>
<head>
<title>Local Lenders</title>
</head>
<body>
<table width = "600" border = "1" cellpadding="1" cellspacing = "1">
<tr>
<th>ID</th>
<th>First Name</th>
<th>Last Name</th>
<th>Company</th>
<tr>
<?php
while ($lender = mysql_fetch_assoc($records)) {
echo "<tr>";
echo "<td>".$lender['ID']."</td";
echo "<td>".$lender['First']."</td>";
echo "<td>".$lender['Last']."</td>";
echo "<td>".$lender['Company']."</td>";
echo "</tr>";
} //end while
?>
</table>
</body>
</html>
服务器控制台
==> /home/ubuntu/lib/apache2/log/error.log <==
[Mon Mar 23 13:59:17.146489 2015] [:error] [pid 26008] [client 10.240.52.53:54254] PHP Warning: mysqli_connect(): (HY000/2003): Can't connect to MySQL server on '10.240.52.53' (111) in /home/ubuntu/workspace/lenders.php on line 13
[Mon Mar 23 13:59:17.146571 2015] [:error] [pid 26008] [client 10.240.52.53:54254] PHP Notice: Trying to get property of non-object in /home/ubuntu/workspace/lenders.php on line 16
[Mon Mar 23 13:59:17.146580 2015] [:error] [pid 26008] [client 10.240.52.53:54254] PHP Notice: Trying to get property of non-object in /home/ubuntu/workspace/lenders.php on line 19
[Mon Mar 23 13:59:17.146680 2015] [:error] [pid 26008] [client 10.240.52.53:54254] PHP Warning: mysql_query(): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (2) in /home/ubuntu/workspace/lenders.php on line 24
[Mon Mar 23 13:59:17.146693 2015] [:error] [pid 26008] [client 10.240.52.53:54254] PHP Warning: mysql_query(): A link to the server could not be established in /home/ubuntu/workspace/lenders.php on line 24
[Mon Mar 23 13:59:17.146708 2015] [:error] [pid 26008] [client 10.240.52.53:54254] PHP Warning: mysql_fetch_assoc() expects parameter 1 to be resource, boolean given in /home/ubuntu/workspace/lenders.php on line 48
C9 终端输出
mysql> select * FROM lenders;
+----+--------+---------+--------------+-----------+-------------------------------------------------------+
| ID | First | Last | Company | Phone | Bio |
+----+--------+---------+--------------+-----------+-------------------------------------------------------+
| 1 | Tanner | Hallman | UNCW | 123456789 | I am a cool guy that would be good for your finances. |
| 2 | Wes | Hallman | Mortgage Pro | 987654321 | I'm a good, cool person. |
+----+--------+---------+--------------+-----------+-------------------------------------------------------+
2 rows in set (0.00 sec)
浏览器输出 我得到一个表的开头，带有标题，但它不检索数据。 我已经确认c9实际上可以使用c9终端连接到数据库，所以我迷路了。
连接成功我的伙计（）
ID |名字 |姓氏 |公司
【问题讨论】：
-
我什至按照cloud9 post 上的指示从终端手动检索了 IP 和 C9_USER 并手动输入它们，但仍然无济于事。
-
我认为您的主机名 (
$host) 可能是问题所在。尝试将getenv("REMOTE_ADDR")替换为getenv('IP')，然后重试。 -
我刚刚尝试了这个编辑，但没有奏效。当我从 c9 终端检索 IP 时，它的 0.0.0.0.
-
没错，
0.0.0.0应该是您运行 MySQL 的地方。我不确定为什么它不起作用 -
你的 MySQL 是如何启动的？
标签： php html cloud9-ide