每页显示5个结果

我是新来的，希望有人能够帮助我，我有一个MySQL数据库4字段“ID，日期，名称，评论” 我有以下的PHP文件：每页显示5个结果

<html> 
<head> 
<title>Paging Using PHP</title> 
</head> 
<body> 
<?php 
$dbhost = 'localhost'; 
$dbuser = 'USERNAME'; 
$dbpass = 'PASSWORD'; 
$rec_limit = 5; 

$conn = mysql_connect($dbhost, $dbuser, $dbpass); 
if(! $conn) 
{ 
    die('Could not connect: ' . mysql_error()); 
} 
mysql_select_db('DATABASE_NAME'); 
/* Get total number of records */ 
$sql = "SELECT count(id) FROM comments "; 
$retval = mysql_query($sql, $conn); 
if(! $retval) 
{ 
    die('Could not get data: ' . mysql_error()); 
} 
$row = mysql_fetch_array($retval, MYSQL_NUM); 
$rec_count = $row[0]; 

if(isset($_GET{'page'})) 
{ 
    $page = $_GET{'page'} + 1; 
    $offset = $rec_limit * $page ; 
} 
else 
{ 
    $page = 0; 
    $offset = 0; 
} 
$left_rec = $rec_count - ($page * $rec_limit); 

$sql = "SELECT * FROM comments ORDER BY id DESC"; 
     "FROM comments ". 
     "LIMIT $offset, $rec_limit"; 


$retval = mysql_query($sql, $conn); 
if(! $retval) 
{ 
    die('Could not get data: ' . mysql_error()); 
} 
while($row = mysql_fetch_array($retval, MYSQL_ASSOC)) 
{ 
    echo "<strong>Date :{$row['date']} </strong><br> ". 
     "<strong>Name : {$row['name']} </strong><br> ". 
     "Comment : {$row['comment']} <br> ". 
     "<br><br>"; 
} 

if($page > 0) 
{ 
    $last = $page - 2; 
    echo "<a href=\"$_PHP_SELF?page=$last\">Previous Page</a> |"; 
    echo "<a href=\"$_PHP_SELF?page=$page\">Next Page</a>"; 
} 
else if($page == 0) 
{ 
    echo "<a href=\"$_PHP_SELF?page=$page\">Next Page</a>"; 
} 
else if($left_rec < $rec_limit) 
{ 
    $last = $page - 2; 
    echo "<a href=\"$_PHP_SELF?page=$last\">Previous Page</a>"; 
} 
mysql_close($conn); 
?>

这一切工作正常，除了我想要它做的显示5个结果每页，有人可以告诉我，我需要改变，如何以及在哪里？非常感谢

来源

2013-07-26 Zia Qammar

呃...搜索？ http://stackoverflow.com/questions/tagged/pagination – Hailwood

[**请不要在新代码**中使用'mysql_ *'函数]（http://bit.ly/phpmsql）。他们不再被维护[并且被正式弃用]（http://j.mp/XqV7Lp）。看到[**红框**]（http://j.mp/Te9zIL）？学习[*准备的语句*]（http://j.mp/T9hLWi），并使用[PDO]（http://php.net/pdo）或[MySQLi]（http://php.net/ mysqli） - [这篇文章]（http://j.mp/QEx8IB）将帮助你决定哪个。如果你选择PDO，[这里是一个很好的教程]（http://j.mp/PoWehJ）。 –

您的sql语法在这里不正确 '$ sql =“SELECT * FROM comments ORDER BY id DESC”; “FROM comments”。 “LIMIT $ offset，$ rec_limit”' 它可能需要是'$ sql =“SELECT * FROM comments ORDER BY id DESC”; $ sql。=“LIMIT $ offset，$ rec_limit”;' – Ahmad

这是工作代码。只需复制并粘贴。做你的回声。如果你在表格中回显，它会很好看。

<?php 

//DB CONNECTION HERE 

$currentPage = $_SERVER["PHP_SELF"]; 

$rec_limit = 5;//This will display 5 result per page 
$pageNum_view = 0; 
if (isset($_GET['pageNum_view'])) { 
    $pageNum_view = $_GET['pageNum_view']; 
} 
$startRow_view = $pageNum_view * $rec_limit; 

mysql_select_db($dbhost, $dbuser, dbpass); 
$query_view = "SELECT * FROM comments ORDER BY id DESC"; 
$query_limit_view = sprintf("%s LIMIT %d, %d", $query_view, $startRow_view, $rec_limit); 
$view = mysql_query($query_limit_view, $dbconnect) or die(mysql_error()); 
$row_view = mysql_fetch_assoc($view); 

if (isset($_GET['totalRows_view'])) { 
$totalRows_view = $_GET['totalRows_view']; 
} else { 
    $all_view = mysql_query($query_view); 
    $totalRows_view = mysql_num_rows($all_view); 
} 
    $totalPages_view = ceil($totalRows_view/$rec_limit)-1; 

$queryString_view = ""; 
if (!empty($_SERVER['QUERY_STRING'])) { 
    $params = explode("&", $_SERVER['QUERY_STRING']); 
    $newParams = array(); 
    foreach ($params as $param) { 
    if (stristr($param, "pageNum_view") == false && 
    stristr($param, "totalRows_view") == false) { 
    array_push($newParams, $param); 
    } 
} 
    if (count($newParams) != 0) { 
    $queryString_view = "&" . htmlentities(implode("&", $newParams)); 
} 
} 
$queryString_view = sprintf("&totalRows_view=%d%s", $totalRows_view, 
$queryString_view); 
?> 
//Here echo 
<?php if ($pageNum_view > 0) { // Show if not first page ?> 
     <a href="<?php printf("%s?pageNum_view=%d%s", $currentPage, 0, 
$queryString_view); ?>">FIRST</a> 
     <?php } // Show if not first page ?> 

<?php if ($pageNum_view > 0) { // Show if not first page ?> 
     <a href="<?php printf("%s?pageNum_view=%d%s", $currentPage, max(0, $pageNum_view - 1), $queryString_view); ?>">PREVIOUS</a> 
     <?php } // Show if not first page ?> 

<?php if ($pageNum_view < $totalPages_view) { // Show if not last page ?> 
     <a href="<?php printf("%s?pageNum_view=%d%s", $currentPage, min($totalPages_view, $pageNum_view + 1), $queryString_view); ?>">NEXT</a> 
     <?php } // Show if not last page ?> 

    <?php if ($pageNum_view < $totalPages_view) { // Show if not last page ?> 
     <a href="<?php printf("%s?pageNum_view=%d%s", $currentPage, $totalPages_view, $queryString_view); ?>">LAST</a> 
     <?php } // Show if not last page ?> 

<?php 
    mysql_free_result($view); 
?>

来源

2013-07-26 09:08:32

每页显示5个结果

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