PHP – stránkovanie

12. 11. 2013 02:36:05

Dobrý deň,

vo fórume sa snažím vytvoriť dole odkaz na preklikávanie jednotlivých stránok. Používam tento kód:

<?php
$sql7 = "SELECT COUNT(id) FROM fanswer WHERE approved='1'";
$query7 = mysql_query($db_name, $sql7) or die('Invalid query: ' .mysql_error());
$row = mysql_fetch_row($query7);

$rows7 = $row;

$page_rows = 10;

$last = ceil($rows7/$page_rows);

if($last < 1){
	$last = 1;
}

$pagenum = 1;

if(isset($_GET)){
	$pagenum = preg_replace('##', '', $_GET);
}

if ($pagenum < 1) { 
 $pagenum = 1; 
} else if ($pagenum > $last) { 
 $pagenum = $last; 
}
// This sets the range of rows to query for the chosen $pagenum
$limit = 'LIMIT ' .($pagenum - 1) * $page_rows .',' .$page_rows;

$sql8 = "SELECT id, firstname, lastname, datemade FROM fanswer WHERE approved='1' ORDER BY id DESC $limit";
$query8 = mysqli_query($db_name, $sql8) or die('Invalid query: ' .mysql_error());

$textline1 = "Testimonials ($rows7)";
$textline2 = "Page $pagenum of $last";

$paginationCtrls = '';

if($last != 1){
	/* First we check if we are on page one. If we are then we don't need a link to 
	 the previous page or the first page so we do nothing. If we aren't then we
	 generate links to the first page, and to the previous page. */
	if ($pagenum > 1) {
 $previous = $pagenum - 1;
		$paginationCtrls .= '<a href="'.$_SERVER.'?pn='.$previous.'">Previous</a>     ';
		// Render clickable number links that should appear on the left of the target page number
		for($i = $pagenum-4; $i < $pagenum; $i++){
			if($i > 0){
		 $paginationCtrls .= '<a href="'.$_SERVER.'?pn='.$i.'">'.$i.'</a>   ';
			}
	 }
 }

$paginationCtrls .= ''.$pagenum.'   ';
	
	for($i = $pagenum+1; $i <= $last; $i++){
		$paginationCtrls .= '<a href="'.$_SERVER.'?pn='.$i.'">'.$i.'</a>   ';
		if($i >= $pagenum+4){
			break;
		}
	}

if ($pagenum != $last) {
 $next = $pagenum + 1;
 $paginationCtrls .= '     <a href="'.$_SERVER.'?pn='.$next.'">Next</a> ';
 }
}

ale stále to vypisuje tento ERROR:

( ! ) Warning: mysql_query() expects parameter 2 to be resource, string given in C:wampwwwlolifeview_topic.php on line 207

Call Stack

# Time Memory Function Location

1 0.0110 174856 {main}( ) ..view_topic.php:0

2 0.1350 202232 mysql_query ( ) ..view_topic.php:207

Invalid query:

Nevedel by mi pls niketo poradiť v čom môže byť problém? veľmi pekne ďakujem

12. 11. 2013 02:36:05

https://webtrh.cz/diskuse/php-strankovanie#reply964610

Adam Janiš

(20 hodnocení)

12. 11. 2013 02:50:33

<?php$sql7 = "SELECT COUNT(id) FROM fanswer WHERE approved='1'";$query7 = mysqli_query($db_name, $sql7) or die('Invalid query: ' .mysql_error());$row = mysql_fetch_row($query7);$rows7 = $row;$page_rows = 10;$last = ceil($rows7/$page_rows);if($last < 1){ $last = 1;}$pagenum = 1;if(isset($_GET)){ $pagenum = preg_replace('##', '', $_GET);}if ($pagenum < 1) { $pagenum = 1; } else if ($pagenum > $last) { $pagenum = $last; }// This sets the range of rows to query for the chosen $pagenum$limit = 'LIMIT ' .($pagenum - 1) * $page_rows .',' .$page_rows;$sql8 = "SELECT id, firstname, lastname, datemade FROM fanswer WHERE approved='1' ORDER BY id DESC $limit";$query8 = mysqli_query($db_name, $sql8) or die('Invalid query: ' .mysql_error());$textline1 = "Testimonials ($rows7)";$textline2 = "Page $pagenum of $last";$paginationCtrls = '';if($last != 1){ /* First we check if we are on page one. If we are then we don't need a link to the previous page or the first page so we do nothing. If we aren't then we generate links to the first page, and to the previous page. */ if ($pagenum > 1) { $previous = $pagenum - 1; $paginationCtrls .= '<a href="'.$_SERVER.'?pn='.$previous.'">Previous</a>     '; // Render clickable number links that should appear on the left of the target page number for($i = $pagenum-4; $i < $pagenum; $i++){ if($i > 0){ $paginationCtrls .= '<a href="'.$_SERVER.'?pn='.$i.'">'.$i.'</a>   '; } } } $paginationCtrls .= ''.$pagenum.'   '; for($i = $pagenum+1; $i <= $last; $i++){ $paginationCtrls .= '<a href="'.$_SERVER.'?pn='.$i.'">'.$i.'</a>   '; if($i >= $pagenum+4){ break; } } if ($pagenum != $last) { $next = $pagenum + 1; $paginationCtrls .= '     <a href="'.$_SERVER.'?pn='.$next.'">Next</a> '; }}

12. 11. 2013 02:50:33