Initial commit

20241208/list_72_1.php

@@ -0,0 +1,80 @@
+<meta charset="UTF-8">
+<?php
+//数据列表 带编辑，新增与删除操作
+//引入数据库配置文件
+/*
+ * select * from student_1  limit 0,10
+ * select * from student_1 limit 10,10
+ *
+ */
+require_once "db_config.php";
+mysqli_set_charset($link, 'utf8');
+//取总记录数
+$queryString="select count(name) as maxRows from user_70";
+$rs=mysqli_query($link,$queryString);
+$row=mysqli_fetch_assoc($rs);
+$maxRows=$row['maxRows'];
+
+$rowsOfPage = $_GET['rows_of_page'] ?? 10;
+
+
+
+if(isset($_GET['action'])){
+    //翻页进入
+    if($_GET['action']=="top"){
+        $offset=0;
+    }
+
+    if($_GET['action']=="previous"){
+        $offset=$_GET['offset']-$rowsOfPage;
+        if($offset<0){
+            $offset=0;
+        }
+    }
+    if($_GET['action']=="next"){
+        $offset=$_GET['offset']+$rowsOfPage;
+        //处理最后一页的计算逻辑
+        if($offset>=$maxRows){
+            $offset=$_GET['offset'];
+        }
+    }
+    if($_GET['action']=='bottom'){
+        if($maxRows%$rowsOfPage==0){
+            //整页
+            $offset=$maxRows-$rowsOfPage;
+        }else{
+            //非整页
+            $offset=$maxRows-$maxRows%$rowsOfPage;
+            //20 10 20-10     25-25%10  20
+        }
+
+    }
+
+}else{
+    //第一次进入，偏移量为0
+    $offset=0;
+}
+$queryString="select * from user_70 limit $offset,$rowsOfPage";
+$rs=mysqli_query($link,$queryString);
+//用循环语句，从数据集中读出每一条记录
+echo "<table border='1'>";
+//id,name,password,gender,birthday,course,hometown,resume
+echo "<tr><td colspan='10'>姓名列表</td>";
+$pattern = '/(\d+)/';
+while ($row=mysqli_fetch_assoc($rs)){
+    preg_match_all($pattern, $row['name'], $matches);
+    echo "<tr>";
+    echo "<td>".($matches[0][0]+1)."</td>";
+    echo "<td>".$row['name']."</td>";
+
+}
+echo "<tr><td colspan='10'>
+<a href='list_72_1.php?action=top&offset=$offset&rows_of_page=$rowsOfPage'>首页</a>
+|
+<a href='list_72_1.php?action=previous&offset=$offset&rows_of_page=$rowsOfPage'>上一页</a>
+|
+<a href='list_72_1.php?action=next&offset=$offset&rows_of_page=$rowsOfPage'>下一页</a>
+|
+<a href='list_72_1.php?action=bottom&offset=$offset&rows_of_page=$rowsOfPage'>末页</a>
+</td></tr>";
+echo "</table>";