后台是php，表中数据可编辑，可删除，可提交到数据库
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<style>
body {
font-family: Arial, sans-serif;
margin: 20px;
background-color: #fff;
}
.toolbar {
margin-bottom: 10px;
display: flex;
gap: 10px;
align-items: center;
}
button {
padding: 5px 10px;
cursor: pointer;
}
table 
