我刚刚在学习分页。我无法让它为搜索结果工作。它使用正确数量的链接正确显示第一页,但单击任何链接(甚至在第 1 页上)会转到空白页。
有人可以告诉我我做错了什么:
以下代码用于单击搜索按钮时。
<?php
include('includes/connect-db.php');
include('includes/functions.php');
if (isset($_GET['searchbtn'])){
$product=$_GET['products'];
$status=$_GET['ticket_status'];
$order_by=$_GET['order_by'];
$ticket_type=$_GET['ticket_type'];
#check if product has been selected
if ($_GET['products'] == 'select'){
echo '<font class="error">  Please select a product to search.</font>';
}else{
if ($status == 'All' AND $order_by == 'All' AND $ticket_type == 'All' ){
$page_query="SELECT * FROM tickets WHERE product='$product' ORDER BY created DESC";
}elseif ($ticket_type == 'BOX'){
$page_query="SELECT * FROM tickets WHERE product='$product' AND status='$status' AND pbi <> '-' ORDER BY '$order_by' ";
}elseif ($ticket_type == 'PVR'){
$page_query="SELECT * FROM tickets WHERE product='$product' AND status='$status' AND inc <> '-' ORDER BY '$order_by' ";
}else{
$page_query="SELECT * FROM tickets WHERE product='$product' AND status='$status' ORDER BY created DESC";
}
}#end of else
$results_per_page=3;
$result_set=pagination($results_per_page,$page_query);
$query=$result_set['query'];
$pages=$result_set['pages'];
#SELECT, SHOW, DESCRIBE, EXPLAIN and other statements returning resultset. A resource on success or False on Error
if (!empty($query)){
$result = mysqli_query($db,$query) or die( "My query ($query) generated an error: ".mysql_error());
$num_results = mysqli_num_rows($result);
if ($num_results > 0){
displayTicket($result);
if ($pages > 1){
echo '</br>';
for($i=1;$i<=$pages;$i++){
echo ' <a href="?page='.$i.'">'.$i.'</a> ';
}
}
}else{
echo "  No Records found.";
}
}#query string is not empty
}
?>
我已将分页代码放在单独的函数中:
function pagination($per_page, $pages_query){
include('includes/connect-db.php');
$pagination[]=array();
#total result count
$total_result=mysqli_query($db,$pages_query);
#ceil takes a decimal number and gives the nearest whole number
$total=mysqli_num_rows($total_result);
$pages = ceil($total / $per_page);
$page = (isset($_GET['page'])) ? (int)$_GET['page'] : 1;
$start = ($page - 1) * $per_page;
$query = " LIMIT $start,$per_page";
$query = $pages_query.$query;
$pagination['query'] = $query;
$pagination['pages'] = $pages;
return $pagination;
}
注意:链接到其他页面的分页只有在我尝试使用搜索功能时才会失败。我已经在一个在表格中列出信息的页面上进行了尝试,并且链接工作正常。