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Methods and simple examples of paging display of data in PHP
- 墨辰丷Original
- 2018-06-02 09:55:102940browse
This article mainly introduces the method and simple examples of paging data display in PHP. Interested friends can refer to it. I hope it will be helpful to everyone.
Paging is a frequently used function in background management. Paging display facilitates the management of large amounts of data.
The example code is as follows:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>用户列表</title>
</head>
<body>
<?php
$con = mysql_connect("localhost","root","");
mysql_query("set names utf8");
mysql_select_db("zhiye",$con);
$pageSize = 1; //每页显示的数量
$rowCount = 0; //要从数据库中获取
$pageNow = 1; //当前显示第几页
//如果有pageNow就使用，没有就默认第一页。
if (!empty($_GET['pageNow'])){
$pageNow = $_GET['pageNow'];
}
$pageCount = 0; //表示共有多少页
$sql1 = "select count(id) from user";
$res1 = mysql_query($sql1);
if($row1=mysql_fetch_row($res1)){
$rowCount = $row1[0];
}
//计算共有多少页，ceil取进1
$pageCount = ceil(($rowCount/$pageSize));
//使用sql语句时，注意有些变量应取出赋值。
$pre = ($pageNow-1)*$pageSize;
$sql2 = "select * from user limit $pre,$pageSize";
$res2 = mysql_query($sql2);
while($row=mysql_fetch_assoc($res2)){
echo $row['user_name']."<br>";
echo $row['name']."<br>";
echo $row['email']."<br>";
echo $row['password']."<br>";
echo $row['tel']."<br>";
}
for ($i=1;$i<=$pageCount;$i++){
echo "<a href='userList.php?pageNow=$i'>$i</a> ";
}
?>
</body>
</html>The above method cannot be used when there is a large amount of data.
<?php
$con = mysql_connect("localhost","root","");
mysql_query("set names utf8");
mysql_select_db("zhiye",$con);
$pageSize = 1; //每页显示的数量
$rowCount = 0; //要从数据库中获取
$pageNow = 1; //当前显示第几页
//如果有pageNow就使用，没有就默认第一页。
if (!empty($_GET['pageNow'])){
$pageNow = $_GET['pageNow'];
}
$pageCount = 0; //表示共有多少页
$sql1 = "select count(id) from user";
$res1 = mysql_query($sql1);
if($row1=mysql_fetch_row($res1)){
$rowCount = $row1[0];
}
//计算共有多少页，ceil取进1
$pageCount = ceil(($rowCount/$pageSize));
//使用sql语句时，注意有些变量应取出赋值。
$pre = ($pageNow-1)*$pageSize;
$sql2 = "select * from user limit $pre,$pageSize";
$res2 = mysql_query($sql2);
//$sql = "select * from user";
//$res = mysql_query($sql,$con);
while($row=mysql_fetch_assoc($res2)){
echo $row['user_name']."<br>";
echo $row['name']."<br>";
echo $row['email']."<br>";
echo $row['password']."<br>";
echo $row['tel']."<br>";
}
if($pageNow>1){
$prePage = $pageNow-1;
echo "<a href='userList.php?pageNow=$prePage'>pre</a> ";
}
if($pageNow<$pageCount){
$nextPage = $pageNow+1;
echo "<a href='userList.php?pageNow=$nextPage'>next</a> ";
echo "当前页{$pageNow}/共{$pageCount}页";
}
echo "<br/><br/>";
?>
<form action="userList.php">
<input type="text" name="pageNow">
<input type="submit" value="GO">
</form>Summary: The above is the entire content of this article, I hope it will be helpful to everyone's study.
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