88 lines
2.3 KiB
PHP
88 lines
2.3 KiB
PHP
<meta charset="UTF-8">
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<?php
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//数据列表 带编辑，新增与删除操作
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//引入数据库配置文件
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/*
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* select * from student_1 limit 0,10
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* select * from student_1 limit 10,10
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*
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*/
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require_once "exam_config.php";
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//取总记录数
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$queryString="select count(name) as maxRows from user_70";
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$rs=mysqli_query($link,$queryString);
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$row=mysqli_fetch_assoc($rs);
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$maxRows=$row['maxRows'];
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$rowsOfPage=10;
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if(isset($_GET['action'])){
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//翻页进入
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if($_GET['action']=="top"){
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$offset=0;
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}
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if($_GET['action']=="previous"){
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$offset=$_GET['offset']-$rowsOfPage;
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if($offset<0){
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$offset=0;
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}
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}
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if($_GET['action']=="next"){
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$offset=$_GET['offset']+$rowsOfPage;
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//处理最后一页的计算逻辑
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if($offset>=$maxRows){
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$offset=$_GET['offset'];
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}
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}
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if($_GET['action']=='bottom'){
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if($maxRows%$rowsOfPage==0){
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//整页
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$offset=$maxRows-$rowsOfPage;
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}else{
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//非整页
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$offset=$maxRows-$maxRows%$rowsOfPage;
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//20 10 20-10 25-25%10 20
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}
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}
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}else{
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//第一次进入，偏移量为0
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$offset=0;
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}
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$queryString="select * from user_70 limit $offset,$rowsOfPage";
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$rs=mysqli_query($link,$queryString);
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//用循环语句，从数据集中读出每一条记录
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echo "<table border='1'>";
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//id,name,password,gender,birthday,course,hometown,resume
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echo "<tr><td>学号</td><td>姓名</td><td>班级</td><td>性别</td><td>出生日期</td><td>选课</td><td>籍贯</td><td>操作</td></tr>";
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while ($row=mysqli_fetch_assoc($rs)){
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/*
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echo $row['name'];
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echo $row['course'];*/
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echo "<tr>";
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echo "<td>".$row['name']."</td>";
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echo "</tr>";
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}
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//新增与编辑的差异在于新增是地id没有值，而编辑时id有一个值。新增与编辑90%的功能是一样的，因此在实际开发中都是调用的同一个模块
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echo "<tr><td colspan='10'>
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<a href='edit_5.php?id=&offset=0'>新增</a>
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<a href='list_72.php?action=top&offset=$offset'>首页</a>
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<a href='list_72.php?action=previous&offset=$offset'>上一页</a>
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<a href='list_72.php?action=next&offset=$offset'>下一页</a>
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<a href='list_72.php?action=bottom&offset=$offset'>尾页</a>
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</td></tr>";
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echo "</table>";
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