<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="https://storage.googleapis.com/code.getmdl.io/1.0.2/material.indigo-pink.min.css">
<script src="https://storage.googleapis.com/code.getmdl.io/1.0.2/material.min.js"></script>
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
</head>
<body>
<!-- Always shows a header, even in smaller screens. -->
<div class="mdl-layout mdl-js-layout mdl-layout--fixed-header">
<header class="mdl-layout__header">
<div class="mdl-layout__header-row">
<!-- Title -->
<span class="mdl-layout-title">Forum</span>
<!-- Add spacer, to align navigation to the right -->
<div class="mdl-layout-spacer"></div>
<!-- Navigation. We hide it in small screens. -->
<nav class="mdl-navigation mdl-layout--large-screen-only">
<a class="mdl-navigation__link" href="">Default Subforum2</a>
</nav>
</div>
</header>
<div class="mdl-layout__drawer">
<span class="mdl-layout-title">Forum</span>
<nav class="mdl-navigation">
<a class="mdl-navigation__link" href="">Browse Subforums</a>
<a class="mdl-navigation__link" href="">Search For Post</a>
</nav>
</div>
<main class="mdl-layout__content">
<div class="page-content">
<!-- Your content goes here -->
<?php
include("dbforforum.php");
$subForum = "";
$results = $mysqli->query("SELECT * FROM `SubForumList`");
echo $results;
for ($i = 0; $i < $results->num_rows; $i++)
{
$results->data_seek($i);
$row = $results->fetch_assoc();
$subForum = $row['Name'];
echo $subForum;
echo $subForum;
}
?>
</div>
</main>
</div>
</body>
</html>
每次循环执行时，我都会尝试在 PHP 中的 SQL 表的“subForum”行中回显 HTML $row['subForum']，但是，由于某种原因，它不是这样正在连接。
即使在我的数据库配置文件 dbforum.php 中，也显示它已成功连接:
<?php
$mysqli = new mysqli("localhost", "root", "", "Forum");
if ($conn->connect_error) {
die("Connection failed: " . $conn->connect_error);
}
echo "Connected successfully";
?>
我对此感到非常非常困惑。如有任何帮助，我们将不胜感激。
注意:我最近从 Windows 切换到 Mac(不是我的选择)，因此从 WAMP 转到了 MAMP。不确定这是否与任何事情有关。
最佳答案
应该是这个
在您的数据库配置中
$mysqli = new mysqli("localhost", "root", "", "Forum"); //the variable here is mysqli
if ($conn->connect_error) { //the error here is $conn because it isn't the variable above so change the variable to $mysqli
die("Connection failed: " . $conn->connect_error); //and here too to $mysqli
}
echo "Connected successfully";
变化:
$mysqli = new mysqli('localhost', 'root', '', 'databasename'); //connect db
if($mysqli->connect_errno){
die("Error! ".$mysqli->connect_errno);
}
if($result = $mysqli->query("SELECT * FROM SubForumlist")){
echo $result->num_rows //num_rows == your data you want to echo
}
关于PHP 脚本正在连接到数据库，但尽管已连接，但不会返回表值。，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/32001766/