PHP 信息不随会话和分页传递
php information not passing through with sessions and pagination
所以我已经看了几个小时了这个页面，我似乎无法弄清楚这里的问题是什么。我之前的所有链接都遇到过这个问题，我会舔一个链接来过滤/排序数据库结果，单击页面链接转到下一页，它会显示没有任何过滤结果的第二页。我通过使用会话解决了"最多胜利"、"最佳保存百分比"和"最佳进球"的问题，但由于某种原因，当我尝试通过范围滑块表单过滤结果时，它仍然这样做。当我调整滑块并提交时，它可以工作，但是如果我再次单击另一个页面，它会再次显示数据库中的所有结果。谁能看出它为什么要这样做？我已经尝试了从表单中发布和获取方法，但它似乎不起作用，但如果有人可以提供一些建议，我将不胜感激！！
这是代码：
<body>
<header>
<div class="header-container">
<nav>
<a href="index.php"><img src="images/header_img.png" alt="Golaie Gear Online"/></a>
<ul>
<li><a href="listings.php?listing=default">Browse Goalies</a></li>
<li><a href="gearlist.php">Browse Gear</a></li>
<li><a href="admin/login.php" style="color:#9a9a9a;">Admin</a></li>
</ul>
<form method="get" action="<?php echo "generalsearch.php?q=$searchvalue"; ?>" class="search-field">
<input name="search" type="text" placeholder="Search">
<button type="submit" title="Search" id="submit"><img src="images/header_srch.png" alt="search"/></button>
</form>
</nav>
</div>
<div style="clear:both;"></div>
</header>
<link rel="stylesheet" href="http://code.jquery.com/ui/1.10.3/themes/smoothness/jquery-ui.css">
<style type="text/css">
#win-range, #gaa-range, #sv-range{
width: 160px;
font-size: 10px;
margin: 0 auto;
}
#win-range a, #gaa-range a, #sv-range a{
margin-top: 0px !important;
padding: 0 !important;
}
</style>
<script src="http://code.jquery.com/jquery-1.9.1.js"></script>
<script src="http://code.jquery.com/ui/1.10.3/jquery-ui.js"></script>
<script>
$(function(){
$("#win-range").slider({
range: true,
min: 1,
max: 1000,
values: [1, 1000],
slide: function(event, ui) {
// in order to pass the user selected values to your app, we will use jQuery to prepopulate certain hidden form elements, then grab those values from the $_POST
$("#minwins").val(ui.values[0]);
$("#maxwins").val(ui.values[1]);
$("#winamount").val(ui.values[0] + " - " + ui.values[1]);
}
});
$("#winamount").val($("#win-range").slider("values", 0) + " - " + $("#win-range").slider("values", 1));
});
$(function(){
$("#gaa-range").slider({
range: true,
min: 0,
max: 10,
values: [0, 10],
slide: function(event, ui) {
// in order to pass the user selected values to your app, we will use jQuery to prepopulate certain hidden form elements, then grab those values from the $_POST
$("#mingaa").val(ui.values[0]);
$("#maxgaa").val(ui.values[1]);
$("#gaaamount").val(ui.values[0] + " - " + ui.values[1]);
}
});
$("#gaaamount").val($("#gaa-range").slider("values", 0) + " - " + $("#gaa-range").slider("values", 1));
});
$(function(){
$("#sv-range").slider({
range: true,
min: 750,
max: 1000,
values: [750, 1000],
slide: function(event, ui) {
// in order to pass the user selected values to your app, we will use jQuery to prepopulate certain hidden form elements, then grab those values from the $_POST
$("#minsv").val(ui.values[0]);
$("#maxsv").val(ui.values[1]);
$("#svamount").val(ui.values[0] + " - " + ui.values[1]);
}
});
$("#svamount").val($("#sv-range").slider("values", 0) + " - " + $("#sv-range").slider("values", 1));
});
</script>
<?php
include("includes/header.php");
include("includes/mysqli_connect.php");
$sortDesc = $_REQUEST['sortstats'];
$sortAsc = $_REQUEST['sortstatslow'];
$minwins = $_GET['minwins'];
$maxwins = $_GET['maxwins'];
$mingaa = $_GET['mingaa'];
$maxgaa = $_GET['maxgaa'];
$minsv = $_GET['minsv'];
$maxsv = $_GET['maxsv'];
// FILTERING YOUR DB
$sortstats = $_GET['sortstats'];
$sortstatslow = $_GET['sortstatslow'];
$getminwins = $_REQUEST['getminwins'];
$getmaxwins = $_REQUEST['getmaxwins'];
$getmingaa = $_REQUEST['getmingaa'];
$getmaxgaa = $_REQUEST['getmaxgaa'];
$getminsv = $_REQUEST['getminsv'];
$getmaxsv = $_REQUEST['getmaxsv'];
// paging
$getcount = mysqli_query ($con,"SELECT COUNT(*) FROM Player");
$postnum = mysqli_result($getcount,0);// this needs a fix for MySQLi upgrade; see custom function below
$limit = 6; //how many blog posts per page you will see.
if($postnum > $limit){
$tagend = round($postnum % $limit,0);
$splits = round(($postnum - $tagend)/$limit,0);
if($tagend == 0){
$num_pages = $splits;
}else{
$num_pages = $splits + 1;
}
if(isset($_GET['pg'])){
$pg = $_GET['pg'];
}else{
$pg = 1;
}
$startpos = ($pg*$limit)-$limit;
$limstring = "LIMIT $startpos,$limit";
}else{
$limstring = "LIMIT 0,$limit";
}
// MySQLi upgrade: we need this for mysql_result() equivalent
function mysqli_result($res, $row, $field=0) {
$res->data_seek($row);
$datarow = $res->fetch_array();
return $datarow[$field];
}
?>
<div class="listingcontainer">
<div class="sidebar">
<h3>Sort By:</h3>
<a href="listings.php?sortstats=Wins">Most Wins</a>
<a href="listings.php?sortstatslow=GAA">Best Goals Against</a>
<a href="listings.php?sortstats=SavePerc">Best Save %</a>
<hr/>
<h3>Custom Filter</h3>
<br/>
<div class="custom-filter">
<form name="filters" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="get" id="filters">
<label for="winamount">Win Range:</label>
<input type="text" id="winamount" />
<div style="clear:both;"></div>
<input type="hidden" id="minwins" name="minwins" value="0" />
<input type="hidden" id="maxwins" name="maxwins" value="1000" />
<div id="win-range"></div>
<br/>
<label for="gaaamount">GAA:</label>
<input type="text" id="gaaamount" /><br />
<div style="clear:both;"></div>
<input type="hidden" id="mingaa" name="mingaa" value="0" />
<input type="hidden" id="maxgaa" name="maxgaa" value="10" />
<div id="gaa-range"></div>
<br/>
<label for="svamount">SV %:</label>
<input type="text" id="svamount" /><br />
<div style="clear:both;"></div>
<input type="hidden" id="minsv" name="minsv" value="750" />
<input type="hidden" id="maxsv" name="maxsv" value="1000" />
<div id="sv-range"></div>
<input type="submit" name="submit" id="submit"/>
</form>
</div>
</div>
<div class="main-listings">
<h1>Current NHL Goaltenders</h1>
<?php
session_start();
if($_SESSION['allresults'])
{
$result = mysqli_query($con, "SELECT * FROM Player ORDER BY PlayerID ASC $limstring");
if(isset($sortstats)){//THIS WORKS
session_start();
$_SESSION['sortStatsDesc'] = session_id();
$result = mysqli_query($con,"SELECT * FROM Player ORDER BY $sortstats DESC $limstring ");
$filter = "sortstats={$sortDesc}";
}
if(isset($sortstatslow)) {//THIS WORKS
session_start();
$_SESSION['sortStatsAsc'] = session_id();
$result = mysqli_query($con,"SELECT * FROM Player ORDER BY $sortstatslow ASC $limstring ");
$filter = "sortstatslow={$sortAsc}";
}
if(isset($minwins) || isset($maxwins) || isset($mingaa) || isset($maxgaa) || isset($minsv) || isset($maxsv))//THIS SEEMS TO WORK
{
session_start();
$_SESSION['customFilter'] = session_id();
$result = mysqli_query($con, "SELECT * FROM Player WHERE Wins BETWEEN '$minwins' AND '$maxwins' AND
GAA BETWEEN '$mingaa' AND '$maxgaa' AND SavePerc BETWEEN '$minsv' AND '$maxsv'
ORDER BY PlayerID ASC $limstring") or die (mysql_error());
$filter = "getminwins={$minwins}&getmaxwins={$maxwins}&getmingaa={$mingaa}&getminsv={$minsv}&getmaxsv={$maxsv}";
}
}
else if($_SESSION['sortStatsDesc'])//THIS WORKS
{
$result = mysqli_query($con,"SELECT * FROM Player ORDER BY $sortstats DESC $limstring ");
}
else if($_SESSION['sortStatsAsc'])//THIS WORKS
{
$result = mysqli_query($con,"SELECT * FROM Player ORDER BY $sortstatslow ASC $limstring ");
}
else if($_SESSION['customFilter'])//DON'T KNOW IF THIS IS DOING ANYTHING
{
$result = mysqli_query($con, "SELECT * FROM Player WHERE Wins BETWEEN '$getminwins' AND '$getmaxwins' AND
GAA BETWEEN '$getmingaa' AND '$getmaxgaa' AND SavePerc BETWEEN '$getminsv' AND '$getmaxsv'
ORDER BY PlayerID ASC $limstring");
}
else{
}
while($row = mysqli_fetch_array($result)){
$name = $row['LastName'] . ", " . $row['FirstName'];
$wins = $row['Wins'];
$pid = $row['PlayerID'];
$image = $row['Picture'];
$gaa = $row['GAA'];
$sv = $row['SavePerc'];
echo "<div class='"player-listing'">";
echo "<div class='"image-holder'">";
echo "<span class='"helper'"></span>";
echo "<a href='"viewplayer.php?playerId=$pid'"><img src='"admin/thumbs/$image'" alt='"$name'"></a>";
echo "</div>";
echo "<div style='"clear:both;'"></div>";
echo "<a href='"viewplayer.php?playerId=$pid'">$name</a>";
echo "<table align='"center'">";
echo "<tr>";
echo "<td style='"border-bottom: 1px solid #212121;'">Wins</td>";
echo "<td style='"border-bottom: 1px solid #212121;'">GAA</td>";
echo "<td style='"border-bottom: 1px solid #212121;'">SV%</td>";
echo "</tr>";
echo "<tr>";
echo "<td>$wins</td>";
echo "<td>$gaa</td>";
echo "<td>.$sv</td>";
echo "</tr>";
echo "</table>";
echo "</div>";
}
// paging links:
echo "<div class='"paging'">";
if($postnum > $limit){
echo "<span class='"page-numbers'"><strong>Pages:</strong> </span>";
$n = $pg + 1;
$p = $pg - 1;
$thisroot = $_SERVER['PHP_SELF'];
if($pg > 1){
echo "<a href='"$thisroot?pg=$p&$filter'"><< prev</a> ";
}
for($i=1; $i<=$num_pages; $i++){
if($i!= $pg){
echo "<a href='"$thisroot?pg=$i&$filter'">$i</a> ";
}else{
echo "$i ";
}
}
if($pg < $num_pages){
// INSERT QUERY STRING VARIBLE TO CARRY OVER DB QUERY
echo "<a href='"$thisroot?pg=$n&$filter'">next >></a>";
}
echo " ";
}
// end paging
echo "</div>";
?>
<br/>
</div>
<div style="clear:both;"></div>
</div>
编辑：我通过将其添加到我的代码中来修复分页问题：
$getcount = mysqli_query ($con,"SELECT COUNT(*) FROM Player");
if($_SESSION['customFilter']){
$getcount = mysqli_query ($con,"SELECT COUNT(*) FROM Player WHERE Wins BETWEEN '$minwins' AND '$maxwins' AND
GAA BETWEEN '$mingaa' AND '$maxgaa' AND SavePerc BETWEEN '$minsv' AND '$maxsv'");
}
但是当我点击下一页时，它仍然让我感到悲伤。我不认为过滤器值由于某种原因而结转。
删除所有现有session_start()，并在页面的第一条规则上添加一个，例如：
<?php
session_start();
?>
//Your html/js/php
...
...
要使会话正常工作，您必须调用的第一个指令是"session_start(("。您应该只在脚本的开头调用它一次。
<?php session_start() ?>
// rest of code PHP/HTML/JS/CSS/anything
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