php - How to create a "Next Page" link to the "non-displayed" results of mySQL search? -


i have search engine on webpage (php). far, show results on same result page. want limit number of results 20 per page, , create "next page" link...

if select top 20 * ... ... show top 20 results...

how create <a href="...">nextpage</a> lead results 21 40? have use ajax?

<?php<br> // database connection info<br> $conn = mysql_connect('localhost','dbusername','dbpass') or trigger_error("sql", e_user_error);<br> $db = mysql_select_db('dbname',$conn) or trigger_error("sql", e_user_error);<br>  // find out how many rows in table <br> $sql = "select count(*) numbers";<br> $result = mysql_query($sql, $conn) or trigger_error("sql", e_user_error);<br> $r = mysql_fetch_row($result);<br> $numrows = $r[0];<br>  // number of rows show per page<br> $rowsperpage = 10;<br> // find out total pages $totalpages = ceil($numrows / $rowsperpage);<br>  // current page or set default<br> if (isset($_get['currentpage']) && is_numeric($_get['currentpage'])) {<br>    // cast var int<br>    $currentpage = (int) $_get['currentpage'];<br> } else {<br>    // default page num<br>    $currentpage = 1;<br> } // end if<br>  // if current page greater total pages...<br> if ($currentpage > $totalpages) {<br>    // set current page last page<br>    $currentpage = $totalpages;<br> } // end if<br> // if current page less first page...<br> if ($currentpage < 1) {<br>    // set current page first page<br>    $currentpage = 1;<br> } // end if<br>  // offset of list, based on current page <br> $offset = ($currentpage - 1) * $rowsperpage;<br>  // info db <br> $sql = "select id, number numbers limit $offset, $rowsperpage";<br> $result = mysql_query($sql, $conn) or trigger_error("sql", e_user_error);<br>  // while there rows fetched...<br> while ($list = mysql_fetch_assoc($result)) {<br>    // echo data<br>    echo $list['id'] . " : " . $list['number'] . "<br />";<br> } // end while  /******  build pagination links ******/<br> // range of num links show<br> $range = 3;<br>  // if not on page 1, don't show links<br> if ($currentpage > 1) {<br>    // show << link go page 1<br>    echo " <a href='{$_server['php_self']}?currentpage=1'><<</a> ";<br>    // previous page num<br>    $prevpage = $currentpage - 1;<br>    // show < link go 1 page<br>    echo " <a href='{$_server['php_self']}?currentpage=$prevpage'><</a> ";<br> } // end if <br>  // loop show links range of pages around current page<br> ($x = ($currentpage - $range); $x < (($currentpage + $range) + 1); $x++) {<br>    // if it's valid page number...<br>    if (($x > 0) && ($x <= $totalpages)) {<br>       // if we're on current page...<br>       if ($x == $currentpage) {<br>          // 'highlight' don't make link<br>          echo " [<b>$x</b>] ";<br>       // if not current page...<br>       } else {<br>          // make link<br>          echo " <a href='{$_server['php_self']}?currentpage=$x'>$x</a> ";<br>       } // end else<br>    } // end if <br> } // end for<br>  // if not on last page, show forward , last page links   <br>      if ($currentpage != $totalpages) {<br>    // next page<br>    $nextpage = $currentpage + 1;<br>     // echo forward link next page <br>    echo " <a href='{$_server['php_self']}?currentpage=$nextpage'>></a> ";<br>    // echo forward link lastpage    echo " <a href='{$_server['php_self']}?currentpage=$totalpages'>>></a> ";<br> } // end if<br> /****** end build pagination links ******/<br> ?>

Comments

Post a Comment

Popular posts from this blog

php - cannot display multiple markers in google maps v3 from traceroute result -

i'm newbie in php mysql , google maps v3. have problems in google maps v3. made traceroute web based , map traceroute's result in google maps v3 final project of college education. have try many tutorials didn't work. have tried tutorials in forum nothing worked. problem cannot display multiple markers got location data database. maybe because i'm newbie , not know how do. confuse looping show markers. here code <?php error_reporting(e_all ^ (e_notice)); ini_set('max_execution_time', 360); $enable_log_user = false; global $ip, $host_name, $host_ip; $host = @$_post['host']; $trace = @$_post['trace']; $self = $_server['php_self']; include("phpsqlajax_dbinfo.php"); $connection = mysql_connect ('127.0.0.1', $username, $password); if (!$connection) { die('not connected : ' . mysql_error());} $db_selected = mysql_select_db($database, $connection); if (!$db_selected) { die ('can\'t use db : ...
Read more

c# - DetailsView in ASP.Net - How to add another column on the side/add a control in each row? -

i have detailsview control on page used edit various fields of record, works in respect. i looking way add 1 column (and if works, why not more) right, absolutely read-only, show same fields of record comparison purposes. i aware there no obvious way such thing out of box detailsview . have looked other controls (transposed gridview , recommended formview , listview ), nothing satisfies. have special data binding setup using detailsview , can't out of without losing features. anyone on how "hack in" additional columns (for display only) on detailsview ? the solution have now, use second detailsview , visible set false in aspx. in code, make sure databind hidden detailsview hosts data third column first, initial detailsview named itemdetails . and in item created event, pass third column html rendering of hidden controls (in last code block) : protected void itemdetails_itemcreated(object sender, eventargs e) { if (dataite...
Read more

javascript - firefox memory leak -

i have following script (i use raphaeljs also) draws circle, waits 1 second, draws circle again, etc (you can copy paste - functional, need include raphael raphaeljs.com): <div id="holder"> </div> <script src="raphael.js" type="text/javascript"></script> <script> var paper = raphael(10, 50, 320, 200); var rad = math.pi / 180; var finangle = 0; function sector(cx, cy, r, startangle, endangle, params) { var x1 = cx + r * math.cos(-startangle * rad), x2 = cx + r * math.cos(-endangle * rad), y1 = cy + r * math.sin(-startangle * rad), y2 = cy + r * math.sin(-endangle * rad); return ["m", cx, cy, "l", x1, y1, "a", r, r, 0, +(endangle - startangle > 180), 0, x2, y2]; } var path = sector(100,100,50,0,180); var arc = paper.path(path); function draw() { path = sector(100,100,50,0,finangle); ...
Read more