We completed the creation of the news data table in the last class, so today we will explain to you how to make a news list display page, then find our content management page in the background template~, and then add what we do not need and redundant code will be deleted!
Then we can start making our news list page!
Step 1: Connect to the database
<?php
// 显示所有的错误
error_reporting(E_ALL & ~E_NOTICE );
// 连接mysql数据库
$link = mysqli_connect('localhost','root', 'root');
if (!$link) {
echo "connect mysql error!";
exit();
}
// 选中数据库 news为数据库的名字
$db_selected = mysqli_select_db($link, 'news');
if (!$db_selected) {
echo "<br>selected db error!";
exit();
}
// 设置mysql字符集 为 utf8
$link->query("set names utf8");
?>Step 2: Query all the contents in the data table and execute the SQL statement
$sql = "select * from new where 1 "; // 查询语句 $result = mysqli_query($link, $sql); $arr_news = mysqli_fetch_all($result, MYSQL_ASSOC);
Step 3: Now we have All the data in the data table has been obtained. Now we need to output the data in a loop, find the location where the data is to be output in the template, and then get the data!
<table class="table table-hover text-center">
<tr>
<th width="100" style="text-align:left; padding-left:20px;">ID</th>
<th>分类名</th>
<th>标题</th>
<th>内容</th>
<th>关键字</th>
<th>图片</th>
<th>作者</th>
<th width="10%">更新时间</th>
<th width="310">操作</th>
</tr>
<?php
if($arr_news){
foreach ($arr_news as $val){
echo "<tr>";
echo " <td style='text-align:left; padding-left:20px;'>
<input type='checkbox' name='id[]' value='' />{$val['id']}</td>";
echo "<td>{$new_category_value[$val['category_id']]}</td>";
echo "<td>". mb_substr($val['title'], 0,15,"utf-8")."</td>";
echo "<td>". mb_substr($val['content'], 0,20,"utf-8")."</td>";
echo "<td>{$val['tag']}</td>";
if($val['pic']){
echo "<td ><img src='{$val['pic']}' style='width: 50px; height: 50px'></td>";
}else{
echo "<td>暂无图片</td>";
}
echo "<td>{$val['author']}</td>";
echo "<td>{$val['created_at']}</td>";
?>
<td>
<div class='button-group'>
<a class='button border-main' href='new_edit.php?id=<?php echo $val['id'];?>'>
<span class='icon-edit'></span> 修改</a>
<a class='button border-red' href='javascript:;' onclick='return del(<?php echo $val['id']?>)'>
<span class='icon-trash-o'></span> 删除</a>
</div>
</td>
<?
echo "</tr>";
}
}
?>We use foreach here to traverse the data. Of course, there are many loop methods. You can complete the function based on what you are familiar with~
Explain: We have a category name here, and this is the content of our category! So here we not only have to query the news table, we also have to query the classification table!
<?php
$sql = "select * from new_category ";
$result = mysqli_query($link, $sql);
$new_category = mysqli_fetch_all($result, MYSQL_ASSOC);
$new_category_value = array();
foreach($new_category as $val ){
$new_category_value[$val['id']] = $val['name'];
}
?>Take out the classification table and traverse the classification table!
As shown in the picture above, all the news is displayed!
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