Kevsgreat Posted October 11, 2009 Share Posted October 11, 2009 Hi guys, I'm new to all this php malarky and I've hit a problem. I had some code that was working fine until I wanted to add pagination to the page. The pagination script is a fairly well known one I picked up online, and when I tried to alter the script a little it went off on one with an error of: Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/sites/xxx.co.uk/public_html/test/data-pagination.php on line 39 This is my code anyway, can anyone help? <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>Untitled Document</title> <link href="../media/pagination.css" rel="stylesheet" type="text/css" /> </head> <body> <?php include('../config.php'); // include your code to connect to DB. $tbl_name="gigs_list2"; //your table name // How many adjacent pages should be shown on each side? $adjacents = 1; /* First get total number of rows in data table. If you have a WHERE clause in your query, make sure you mirror it here. */ $today = date('y-m-d'); $query = "SELECT COUNT(*) as num FROM $tbl_name WHERE gig_date >= '$today' ORDER BY gig_date"; $total_pages = mysql_fetch_array(mysql_query($query)); $total_pages = $total_pages[num]; /* Setup vars for query. */ $targetpage = "data-pagination.php"; //your file name (the name of this file) $limit = 5; //how many items to show per page $page = $_GET['page']; if($page) $start = ($page - 1) * $limit; //first item to display on this page else $start = 0; //if no page var is given, set start to 0 /* Get data. */ $sql = "SELECT FROM $tbl_name WHERE gig_date >='$today' ORDER BY gig_date LIMIT $start, $limit"; $result = mysql_query($sql); $num = mysql_num_rows($result); /* Setup page vars for display. */ if ($page == 0) $page = 1; //if no page var is given, default to 1. $prev = $page - 1; //previous page is page - 1 $next = $page + 1; //next page is page + 1 $lastpage = ceil($total_pages/$limit); //lastpage is = total pages / items per page, rounded up. $lpm1 = $lastpage - 1; //last page minus 1 /* Now we apply our rules and draw the pagination object. We're actually saving the code to a variable in case we want to draw it more than once. */ $pagination = ""; if($lastpage > 1) { $pagination .= "<div class=\"pagination\">"; //previous button if ($page > 1) $pagination.= "<a href=\"$targetpage?page=$prev\">« previous</a>"; else $pagination.= "<span class=\"disabled\">« previous</span>"; //pages if ($lastpage < 7 + ($adjacents * 2)) //not enough pages to bother breaking it up { for ($counter = 1; $counter <= $lastpage; $counter++) { if ($counter == $page) $pagination.= "<span class=\"current\">$counter</span>"; else $pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>"; } } elseif($lastpage > 5 + ($adjacents * 2)) //enough pages to hide some { //close to beginning; only hide later pages if($page < 1 + ($adjacents * 2)) { for ($counter = 1; $counter < 4 + ($adjacents * 2); $counter++) { if ($counter == $page) $pagination.= "<span class=\"current\">$counter</span>"; else $pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>"; } $pagination.= "..."; $pagination.= "<a href=\"$targetpage?page=$lpm1\">$lpm1</a>"; $pagination.= "<a href=\"$targetpage?page=$lastpage\">$lastpage</a>"; } //in middle; hide some front and some back elseif($lastpage - ($adjacents * 2) > $page && $page > ($adjacents * 2)) { $pagination.= "<a href=\"$targetpage?page=1\">1</a>"; $pagination.= "<a href=\"$targetpage?page=2\">2</a>"; $pagination.= "..."; for ($counter = $page - $adjacents; $counter <= $page + $adjacents; $counter++) { if ($counter == $page) $pagination.= "<span class=\"current\">$counter</span>"; else $pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>"; } $pagination.= "..."; $pagination.= "<a href=\"$targetpage?page=$lpm1\">$lpm1</a>"; $pagination.= "<a href=\"$targetpage?page=$lastpage\">$lastpage</a>"; } //close to end; only hide early pages else { $pagination.= "<a href=\"$targetpage?page=1\">1</a>"; $pagination.= "<a href=\"$targetpage?page=2\">2</a>"; $pagination.= "..."; for ($counter = $lastpage - (2 + ($adjacents * 2)); $counter <= $lastpage; $counter++) { if ($counter == $page) $pagination.= "<span class=\"current\">$counter</span>"; else $pagination.= "<a href=\"$targetpage?page=$counter\">$counter</a>"; } } } //next button if ($page < $counter - 1) $pagination.= "<a href=\"$targetpage?page=$next\">next »</a>"; else $pagination.= "<span class=\"disabled\">next »</span>"; $pagination.= "</div>\n"; } ?> <?php $i=0; while ($i < $num) { // get the stuff from database $band_name=mysql_result($result,$i,"band_name"); $venue_name=mysql_result($result,$i,"venue_name"); $g_date=mysql_result($result,$i,"gig_date"); $g_time=mysql_result($result,$i,"gig_time"); $g_price=mysql_result($result,$i,"gig_price"); // make the dates make sense $gig_date=date('l jS F, Y',strtotime($g_date)); $gig_time=date('g:ia',strtotime($g_time)); // replace £0 with Free if ($g_price=="0") { $gig_price="Free"; } else { $gig_price='£'.$g_price; } echo "<p>hello</p> <b>$band_name</b> <ul> <li>Venue: $venue_name</li><li>Date: $gig_date</li><li>Time: $gig_time</li><li>Entry: $gig_price</li> </ul> <hr />"; $i++; } ?> <?=$pagination?> </body> </html> Quote Link to comment https://forums.phpfreaks.com/topic/177345-problem-mysql_num_rows-supplied-argument-is-not-a-valid-mysql/ Share on other sites More sharing options...
genericnumber1 Posted October 11, 2009 Share Posted October 11, 2009 This is a common problem you could find a solution for by doing a forum search. That said, your query was probably invalid. add "or die(mysql_error());" after your query function. If you can't figure out what I mean, a forum search will find a post that has a more detailed solution. Quote Link to comment https://forums.phpfreaks.com/topic/177345-problem-mysql_num_rows-supplied-argument-is-not-a-valid-mysql/#findComment-935064 Share on other sites More sharing options...
mikesta707 Posted October 11, 2009 Share Posted October 11, 2009 in the following query $sql = "SELECT FROM $tbl_name WHERE gig_date >='$today' ORDER BY gig_date LIMIT $start, $limit"; you arent selecting everything, you have to select something, IE SELECT * SELECT column SELECT col1, col2, col4 etc. Quote Link to comment https://forums.phpfreaks.com/topic/177345-problem-mysql_num_rows-supplied-argument-is-not-a-valid-mysql/#findComment-935065 Share on other sites More sharing options...
Kevsgreat Posted October 11, 2009 Author Share Posted October 11, 2009 in the following query $sql = "SELECT FROM $tbl_name WHERE gig_date >='$today' ORDER BY gig_date LIMIT $start, $limit"; you arent selecting everything, you have to select something, IE SELECT * SELECT column SELECT col1, col2, col4 etc. Sorted! Thanks for your help! Quote Link to comment https://forums.phpfreaks.com/topic/177345-problem-mysql_num_rows-supplied-argument-is-not-a-valid-mysql/#findComment-935090 Share on other sites More sharing options...
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