A simple php and mysql data paging program_PHP tutorial

一个简单php和mysql数据分页程序有需要的朋友可参考一下。

代码如下

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// Adam's Custom PHP MySQL Pagination Tutorial and Script // You have to put your mysql connection data and alter the SQL queries(both queries) // This script is in tutorial form and is accompanied by the following video: mysql_connect("DB_Host_Here","DB_Username_Here","DB_Password_Here") or die (mysql_error()); mysql_select_db("DB_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"); //////////////////////////////////// Adam's 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     $pn = 1; // force if to be 1 } else if ($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 .= '  ' . $pn . '  ';     $centerPages .= '  ' . $add1 . '  '; } else if ($pn == $lastPage) {     $centerPages .= '  ' . $sub1 . '  ';     $centerPages .= '  ' . $pn . '  '; } else if ($pn > 2 && $pn     $centerPages .= '  ' . $sub2 . '  ';     $centerPages .= '  ' . $sub1 . '  ';     $centerPages .= '  ' . $pn . '  ';     $centerPages .= '  ' . $add1 . '  ';     $centerPages .= '  ' . $add2 . '  '; } else if ($pn > 1 && $pn     $centerPages .= '  ' . $sub1 . '  ';     $centerPages .= '  ' . $pn . '  ';     $centerPages .= '  ' . $add1 . '  '; } // 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 Adam's Pagination Logic //////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////// Adam's 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 ' . $pn . ' of ' . $lastPage. '        ';     // If we are not on page 1 we can place the Back button     if ($pn != 1) {         $previous = $pn - 1;         $paginationDisplay .=  '   Back ';     }     // Lay in the clickable numbers display here between the Back and Next links     $paginationDisplay .= '' . $centerPages . '';     // If we are not on the very last page we can place the Next button     if ($pn != $lastPage) {         $nextPage = $pn + 1;         $paginationDisplay .=  '   Next ';     } } ///////////////////////////////////// END Adam's 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 .= ' ' . $firstname . ' ' . $country . ' ';     } // close while loop ?>         Total Items:

效果

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http://www.bkjia.com/PHPjc/633091.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/633091.htmlTechArticle一个简单php和mysql数据分页程序有需要的朋友可参考一下。 代码如下 复制代码 ?php // Adam's Custom PHP MySQL Pagination Tutorial and Script // You have to...