简单的PHP分页脚本

我有来自数据库的数据行，我想有一个简单的分页表，什么是最简单的方法呢？
如果有人能提供，我会很高兴。

Answer 1

这是HTML和代码的混合，但它是非常基本的，易于理解，应该是相当简单的解耦，以满足您的需求，我认为。

try { // Find out how many items are in the table $total = $dbh->query(' SELECT COUNT(*) FROM table ')->fetchColumn(); // How many items to list per page $limit = 20; // How many pages will there be $pages = ceil($total / $limit); // What page are we currently on? $page = min($pages, filter_input(INPUT_GET, 'page', FILTER_VALIDATE_INT, array( 'options' => array( 'default' => 1, 'min_range' => 1, ), ))); // Calculate the offset for the query $offset = ($page - 1) * $limit; // Some information to display to the user $start = $offset + 1; $end = min(($offset + $limit), $total); // The "back" link $prevlink = ($page > 1) ? '<a href="?page=1" title="First page">&laquo;</a> <a href="?page=' . ($page - 1) . '" title="Previous page">&lsaquo;</a>' : '<span class="disabled">&laquo;</span> <span class="disabled">&lsaquo;</span>'; // The "forward" link $nextlink = ($page < $pages) ? '<a href="?page=' . ($page + 1) . '" title="Next page">&rsaquo;</a> <a href="?page=' . $pages . '" title="Last page">&raquo;</a>' : '<span class="disabled">&rsaquo;</span> <span class="disabled">&raquo;</span>'; // Display the paging information echo '<div id="paging"><p>', $prevlink, ' Page ', $page, ' of ', $pages, ' pages, displaying ', $start, '-', $end, ' of ', $total, ' results ', $nextlink, ' </p></div>'; // Prepare the paged query $stmt = $dbh->prepare(' SELECT * FROM table ORDER BY name LIMIT :limit OFFSET :offset '); // Bind the query params $stmt->bindParam(':limit', $limit, PDO::PARAM_INT); $stmt->bindParam(':offset', $offset, PDO::PARAM_INT); $stmt->execute(); // Do we have any results? if ($stmt->rowCount() > 0) { // Define how we want to fetch the results $stmt->setFetchMode(PDO::FETCH_ASSOC); $iterator = new IteratorIterator($stmt); // Display the results foreach ($iterator as $row) { echo '<p>', $row['name'], '</p>'; } } else { echo '<p>No results could be displayed.</p>'; } } catch (Exception $e) { echo '<p>', $e->getMessage(), '</p>'; } 

Answer 2

我发现的一些教程很容易理解：

• http://www.phpfreaks.com/tutorial/basic-pagination

把这个列表分解成页面大小的块更有意义，而且一次只能查询一个块。 这极大地减less了服务器的处理时间和页面加载时间，并为用户提供了更小的信息来消化，所以他不会扼杀你试图给他的任何垃圾。 这样做的行为被称为分页。

一个基本的分页程序一开始似乎是漫长而可怕的，但是一旦你闭上眼睛，深吸一口气，逐个看看每一个脚本，你会发现它实际上很容易

剧本：

 // find out how many rows are in the table $sql = "SELECT COUNT(*) FROM numbers"; $result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR); $r = mysql_fetch_row($result); $numrows = $r[0]; // number of rows to show per page $rowsperpage = 10; // find out total pages $totalpages = ceil($numrows / $rowsperpage); // get the current page or set a default if (isset($_GET['currentpage']) && is_numeric($_GET['currentpage'])) { // cast var as int $currentpage = (int) $_GET['currentpage']; } else { // default page num $currentpage = 1; } // end if // if current page is greater than total pages... if ($currentpage > $totalpages) { // set current page to last page $currentpage = $totalpages; } // end if // if current page is less than first page... if ($currentpage < 1) { // set current page to first page $currentpage = 1; } // end if // the offset of the list, based on current page $offset = ($currentpage - 1) * $rowsperpage; // get the info from the db $sql = "SELECT id, number FROM numbers LIMIT $offset, $rowsperpage"; $result = mysql_query($sql, $conn) or trigger_error("SQL", E_USER_ERROR); // while there are rows to be fetched... while ($list = mysql_fetch_assoc($result)) { // echo data echo $list['id'] . " : " . $list['number'] . "<br />"; } // end while /****** build the pagination links ******/ // range of num links to show $range = 3; // if not on page 1, don't show back links if ($currentpage > 1) { // show << link to go back to page 1 echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=1'><<</a> "; // get previous page num $prevpage = $currentpage - 1; // show < link to go back to 1 page echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$prevpage'><</a> "; } // end if // loop to show links to range of pages around current page for ($x = ($currentpage - $range); $x < (($currentpage + $range) + 1); $x++) { // if it's a valid page number... if (($x > 0) && ($x <= $totalpages)) { // if we're on current page... if ($x == $currentpage) { // 'highlight' it but don't make a link echo " [<b>$x</b>] "; // if not current page... } else { // make it a link echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$x'>$x</a> "; } // end else } // end if } // end for // if not on last page, show forward and last page links if ($currentpage != $totalpages) { // get next page $nextpage = $currentpage + 1; // echo forward link for next page echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$nextpage'>></a> "; // echo forward link for lastpage echo " <a href='{$_SERVER['PHP_SELF']}?currentpage=$totalpages'>>></a> "; } // end if /****** end build pagination links ******/ ?> 

• http://www.tonymarston.net/php-mysql/pagination.html

本教程适用于那些希望让用户能够以可pipe理的方式逐步浏览大量数据库行的开发人员，而不是一次性完成整个过程。

Answer 3

  <?php // Custom PHP MySQL Pagination Tutorial and Script // You have to put your mysql connection data and alter the SQL queries(both queries) mysql_connect("DATABASE_Host_Here","DATABASE_Username_Here","DATABASE_Password_Here") or die (mysql_error()); mysql_select_db("DATABASE_Name_Here") or die (mysql_error()); ////////////// QUERY THE MEMBER DATA INITIALLY LIKE YOU NORMALLY WOULD $sql = mysql_query("SELECT id, firstname, country FROM myTable ORDER BY id ASC"); //////////////////////////////////// Pagination Logic //////////////////////////////////////////////////////////////////////// $nr = mysql_num_rows($sql); // Get total of Num rows from the database query if (isset($_GET['pn'])) { // Get pn from URL vars if it is present $pn = preg_replace('#[^0-9]#i', '', $_GET['pn']); // filter everything but numbers for security(new) //$pn = ereg_replace("[^0-9]", "", $_GET['pn']); // filter everything but numbers for security(deprecated) } else { // If the pn URL variable is not present force it to be value of page number 1 $pn = 1; } //This is where we set how many database items to show on each page $itemsPerPage = 10; // Get the value of the last page in the pagination result set $lastPage = ceil($nr / $itemsPerPage); // Be sure URL variable $pn(page number) is no lower than page 1 and no higher than $lastpage if ($pn < 1) { // If it is less than 1 $pn = 1; // force if to be 1 } else if ($pn > $lastPage) { // if it is greater than $lastpage $pn = $lastPage; // force it to be $lastpage's value } // This creates the numbers to click in between the next and back buttons // This section is explained well in the video that accompanies this script $centerPages = ""; $sub1 = $pn - 1; $sub2 = $pn - 2; $add1 = $pn + 1; $add2 = $pn + 2; if ($pn == 1) { $centerPages .= '&nbsp; <span class="pagNumActive">' . $pn . '</span> &nbsp;'; $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> &nbsp;'; } else if ($pn == $lastPage) { $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> &nbsp;'; $centerPages .= '&nbsp; <span class="pagNumActive">' . $pn . '</span> &nbsp;'; } else if ($pn > 2 && $pn < ($lastPage - 1)) { $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub2 . '">' . $sub2 . '</a> &nbsp;'; $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> &nbsp;'; $centerPages .= '&nbsp; <span class="pagNumActive">' . $pn . '</span> &nbsp;'; $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> &nbsp;'; $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add2 . '">' . $add2 . '</a> &nbsp;'; } else if ($pn > 1 && $pn < $lastPage) { $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $sub1 . '">' . $sub1 . '</a> &nbsp;'; $centerPages .= '&nbsp; <span class="pagNumActive">' . $pn . '</span> &nbsp;'; $centerPages .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $add1 . '">' . $add1 . '</a> &nbsp;'; } // This line sets the "LIMIT" range... the 2 values we place to choose a range of rows from database in our query $limit = 'LIMIT ' .($pn - 1) * $itemsPerPage .',' .$itemsPerPage; // Now we are going to run the same query as above but this time add $limit onto the end of the SQL syntax // $sql2 is what we will use to fuel our while loop statement below $sql2 = mysql_query("SELECT id, firstname, country FROM myTable ORDER BY id ASC $limit"); //////////////////////////////// END Pagination Logic //////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////// Pagination Display Setup ///////////////////////////////////////////////////////////////////// $paginationDisplay = ""; // Initialize the pagination output variable // This code runs only if the last page variable is ot equal to 1, if it is only 1 page we require no paginated links to display if ($lastPage != "1"){ // This shows the user what page they are on, and the total number of pages $paginationDisplay .= 'Page <strong>' . $pn . '</strong> of ' . $lastPage. '&nbsp; &nbsp; &nbsp; '; // If we are not on page 1 we can place the Back button if ($pn != 1) { $previous = $pn - 1; $paginationDisplay .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $previous . '"> Back</a> '; } // Lay in the clickable numbers display here between the Back and Next links $paginationDisplay .= '<span class="paginationNumbers">' . $centerPages . '</span>'; // If we are not on the very last page we can place the Next button if ($pn != $lastPage) { $nextPage = $pn + 1; $paginationDisplay .= '&nbsp; <a href="' . $_SERVER['PHP_SELF'] . '?pn=' . $nextPage . '"> Next</a> '; } } ///////////////////////////////////// END Pagination Display Setup /////////////////////////////////////////////////////////////////////////// // Build the Output Section Here $outputList = ''; while($row = mysql_fetch_array($sql2)){ $id = $row["id"]; $firstname = $row["firstname"]; $country = $row["country"]; $outputList .= '<h1>' . $firstname . '</h1><h2>' . $country . ' </h2><hr />'; } // close while loop ?> <html> <head> <title>Simple Pagination</title> </head> <body> <div style="margin-left:64px; margin-right:64px;"> <h2>Total Items: <?php echo $nr; ?></h2> </div> <div style="margin-left:58px; margin-right:58px; padding:6px; background-color:#FFF; border:#999 1px solid;"><?php echo $paginationDisplay; ?></div> <div style="margin-left:64px; margin-right:64px;"><?php print "$outputList"; ?></div> <div style="margin-left:58px; margin-right:58px; padding:6px; background-color:#FFF; border:#999 1px solid;"><?php echo $paginationDisplay; ?></div> </body> </html>