我正在尝试学习 PHP 分页。到目前为止，我可以对数字进行分页，但是上一个/下一个按钮出现在每个页码的左侧和右侧，如下所示。
这是我用来生成分页的代码：
<!DOCTYPE html>
<html lang="en">
<head>
<title>PHP</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>List Of Customers</h2>
<div class="row">
<a href="add.php" class="btn btn-success">Create</a>
<table class="table table-bordered">
<thead>
<tr>
<th>Name</th>
<th>Last Name</th>
<th>Address</th>
<th>Phone</th>
<th>Email</th>
<th>Action</th>
</tr>
</thead>
<tbody>
<?php
include 'db.php';
$link = db_connect();
$limit = 4;
if (isset($_GET["page"] ))
{
$page = $_GET["page"];
}
else
{
$page=1;
};
$record_index= ($page-1) * $limit;
$sql = …