我有一个过滤SQL结果的多个复选框。我将期待有很多记录返回，所以我想分页。我目前的分页代码仅适用于像SELECT * FROM movies LIMIT {$startpoint} , {$per_page}这样的简单SQL语句。问题是我无法使用我当前的jquery过滤器来处理我的SQL结果。
分页功能
// Pagination Function
function pagination($query,$per_page=10,$page=1,$url='?'){
global $conDB;
$query = "SELECT COUNT(*) as `num` FROM movies";
$row = mysqli_fetch_array(mysqli_query($conDB,$query));
$total = $row['num'];
$adjacents = "2";
$prevlabel = "‹ Prev";
$nextlabel = "Next ›";
$lastlabel = "Last ››";
$page = ($page == 0 ? 1 : $page);
$start = ($page - 1) * $per_page;
$prev = $page - 1;
$next = $page + 1;
$lastpage = round($total/$per_page);
$lpm1 = $lastpage - 1; // //last page minus 1
$pagination = "";
if($lastpage > 1){
$pagination .= "<ul class='pagination'>";
if ($page > 1) $pagination.= "<li><a href='{$url}page={$prev}'>
{$prevlabel}</a></li>";
if ($lastpage < 7 + ($adjacents * 2)){
for ($counter = 1; $counter <= $lastpage; $counter++){
if ($counter == $page)
$pagination.= "<li><a class='current'>{$counter}</a>
</li>";
else
$pagination.= "<li><a href='{$url}page={$counter}'>
{$counter}</a></li>";
}
} elseif($lastpage > 5 + ($adjacents * 2)){
if($page < 1 + ($adjacents * 2)) {
for ($counter = 1; $counter < 4 + ($adjacents * 2);
$counter++){
if ($counter == $page)
$pagination.= "<li><a class='current'>{$counter}
</a></li>";
else
$pagination.= "<li><a href='{$url}page={$counter}'>
{$counter}</a></li>";
}
$pagination.= "<li class='dot'>...</li>";
$pagination.= "<li><a href='{$url}page={$lpm1}'>{$lpm1}</a>
</li>";
$pagination.= "<li><a href='{$url}page={$lastpage}'>
{$lastpage}</a></li>";
} elseif($lastpage - ($adjacents * 2) > $page && $page >
($adjacents * 2)) {
$pagination.= "<li><a href='{$url}page=1'>1</a></li>";
$pagination.= "<li><a href='{$url}page=2'>2</a></li>";
$pagination.= "<li class='dot'>...</li>";
for ($counter = $page - $adjacents; $counter <= $page +
$adjacents; $counter++) {
if ($counter == $page)
$pagination.= "<li><a class='current'>{$counter}
</a></li>";
else
$pagination.= "<li><a href='{$url}page={$counter}'>
{$counter}</a></li>";
}
$pagination.= "<li class='dot'>..</li>";
$pagination.= "<li><a href='{$url}page={$lpm1}'>{$lpm1}</a>
</li>";
$pagination.= "<li><a href='{$url}page={$lastpage}'>
{$lastpage}</a></li>";
} else {
$pagination.= "<li><a href='{$url}page=1'>1</a></li>";
$pagination.= "<li><a href='{$url}page=2'>2</a></li>";
$pagination.= "<li class='dot'>..</li>";
for ($counter = $lastpage - (2 + ($adjacents * 2));
$counter <= $lastpage; $counter++) {
if ($counter == $page)
$pagination.= "<li><a class='current'>{$counter}
</a></li>";
else
$pagination.= "<li><a href='{$url}page={$counter}'>
{$counter}</a></li>";
}
}
}
if ($page < $counter - 1) {
$pagination.= "<li><a href='{$url}page={$next}'>{$nextlabel}</a>
</li>";
$pagination.= "<li><a href='{$url}page=$lastpage'>{$lastlabel}</a>
</li>";
}
$pagination.= "</ul>";
}
return $pagination;
}//
Latest.php
$page = (int)(!isset($_GET["page"]) ? 1 : $_GET["page"]);
if ($page <= 0) $page = 1;
$per_page = 2; // Set how many records do you want to display per page.
$startpoint = ($page * $per_page) - $per_page;
$statement = "`movies` ORDER BY `m_id` ASC";
$con = mysqli_connect("localhost","root","","blabla");
$mysqli = new mysqli("localhost", "root", "", "blabla");
$db_username = 'root';
$db_password = '';
$db_name = 'blabla'; .
$db_host = 'localhost';
$conDB = mysqli_connect($db_host, $db_username,
$db_password,$db_name)or die('Error: Could not connect to
database.');
if (mysqli_connect_errno())
{
echo "Failed to Connect to MySQL:" . mysqli_connect_error();
}
$results2 = $mysqli->query( "select distinct(m_genre)
from movies where movie_status = '1'");
while($genre_data = mysqli_fetch_assoc($results2)){
?>
<a href="javascript:void(0);" class="list-group-item">
<label>
<input type="checkbox" class="item_filter genre"
value="<?php echo $genre_data['m_genre']; ?>" <?php
if(in_array($genre_data['m_genre'],$genre)){ echo"checked";
} ?> >
<span class="check-box-effect"></span>
<?php echo $genre_data['m_genre']; ?>
</label></a>
<?php } ?>
</div>
<div class="col-xs-4">
<h3>Country</h3>
<?php
$rs = $mysqli->query("select distinct(m_country)
from movies where movie_status = '1'");
while($country_data = mysqli_fetch_assoc($rs)){
?>
<a href="javascript:void(0);" class="list-group-item">
<input type="checkbox" class="item_filter country"
value="<?php echo $country_data['m_country']; ?>" <?php
if(in_array($country_data['m_country'],$country)){
echo"checked"; } ?> >
<?php echo $country_data['m_country'];
?> </a>
<?php } ?>
</div>
<div class="col-xs-4">
<h3>Year</h3>
<?php
$rs = $mysqli->query( "select distinct(m_year)
from movies where movie_status = '1'");
while($year_data = mysqli_fetch_assoc($rs)){
?>
<a href="javascript:void(0);" class="list-group-item">
<input type="checkbox" class="item_filter year"
value=" <?php echo $year_data['m_year']; ?>"
<?php if(in_array($year_data['m_year'],$year))
{ echo"checked"; } ?> >
<?php echo $year_data['m_year']; ?></a>
<?php } ?>
</div>
</div>
</div>
</div>
<div class="row">
<div class="col-xs-12">
<?php
$query = "SELECT * FROM movies
WHERE movie_status = '1'";
//filter query start
if(!empty($genre)){
$genredata =implode("','",$genre);
$query .= " and m_genre in('$genredata') LIMIT {$startpoint} , {$per_page} ";
}
if(!empty($country)){
$countrydata =implode("','",$country);
$query .= " and m_country in('$countrydata') LIMIT {$startpoint} , {$per_page} ";
}
if(!empty($year)){
$yeardata =implode("','",$year);
$query .= " and m_year in('$yeardata') LIMIT
{$startpoint} , {$per_page} ";
}
//filter query end
$rs = mysqli_query($mysqli,$query) or die("Error :
".mysqli_error($mysqli));
while(){
............................
}
echo '<div class= "wrap">';
// displaying paginaiton.
echo pagination($statement,$per_page,$page,$url='?');
echo "</div>";
当前代码并不是Limit结果和displays all results，如果checkbox is checked，过滤器有效，但分页不是i.e no limit and link to next page gives the same result as the first。是否有更简单的方法来分页我的过滤结果或如何修复我当前的代码。我对新的分页解决方案持开放态度。
答案 0 :(得分：1)
最明显的问题是您的过滤器永远不会被应用，因为$ gendre，$ country和$ year永远不会传递给该函数。
假设您从请求对象中正确读取了这些值，请查看HTML中的标记，您从不为其中任何一个设置name属性，因此我认为如果您使用常规提交，它们永远不会正确传递给代码。这有点难以说，因为我们看不到jQuery代码，但这就是我认为的问题 - 在jQuery中构建你的请求参数。
要修复分页，在构建这样的查询时：
$query .= " and m_country in('$countrydata') LIMIT {$startpoint} , {$per_page} ";
首先，只添加过滤器：
$query .= " and m_country in('$countrydata') ";
然后在完成所有过滤器之后，在执行查询之前添加：
$query .= " LIMIT {$startpoint} , {$per_page} ";
出于调试目的，请考虑在此行之前打印出$ query的值：
$rs = mysqli_query($mysqli,$query) or die("Error : ".mysqli_error($mysqli));
并在第1页和第2页比较它们，看看是否有任何东西伸出来作为一个疼痛的拇指。
答案 1 :(得分：0)
Tadasbub的回答应该足够了。我只是根据他的建议写出变化。
<?php
$query = "SELECT * FROM movies
WHERE movie_status = '1'";
//filter query start
if(!empty($genre)){
$genredata =implode("','",$genre);
$query .= " and m_genre in('$genredata')";
}
if(!empty($country)){
$countrydata =implode("','",$country);
$query .= " and m_country in('$countrydata')";
}
if(!empty($year)){
$yeardata =implode("','",$year);
$query .= " and m_year in('$yeardata')";
}
//filter query end
$query .= " LIMIT {$startpoint} , {$per_page} ";
$rs = mysqli_query($mysqli,$query) or die("Error : ".mysqli_error($mysqli));
只需更改此处写的查询块即可。它应该按照你的预期工作。
顺便说一下，问题只在于php逻辑。它与sql / mysql无关。