News list of PHP native development news station (2)
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
// 顯示所有的錯誤
error_reporting(E_ALL & ~E_NOTICE );
// 連接mysql數(shù)據(jù)庫
$link = mysqli_connect('localhost','root', 'root');
if (!$link) {
echo "connect mysql error!";
exit();
}
// 選中數(shù)據(jù)庫 news為數(shù)據(jù)庫的名字
$db_selected = mysqli_select_db($link, 'news');
if (!$db_selected) {
echo "<br>selected db error!";
exit();
}
// 設(shè)置mysql字符集 為 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 "; // 查詢語句 $result = mysqli_query($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>分類名</th>
<th>標(biāo)題</th>
<th>內(nèi)容</th>
<th>關(guān)鍵字</th>
<th>圖片</th>
<th>作者</th>
<th width="10%">更新時間</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='{$val['pic']}' style='width: 50px; height: 50px'></td>";
}else{
echo "<td>暫無圖片</td>";
}
echo "<td>{$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> 刪除</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!
