我有一个页面，其中包含一个用于选择特定用户的选择框。我还有两个radiobuttons用于选择日期范围。此页面用于根据选择生成用户报告。 目前，当我选择用户和首选日期范围并单击提交按钮报告时，会正确生成，但我在提交框中的选择将在提交后重置为默认值。这里我的选择框是从mysql表填充的。
我的任务是即使在表单提交后也保留选择框值。我已经厌倦了很多方面，但没有任何效果。任何人都可以帮我解决这个问题..
这是我的代码：
HTML
<div class="box-container-toggle">
<form class="form-horizontal" name="reportform" id="reportform" action="<?php echo $_SERVER['PHP_SELF'];?>" method="POST" >
<div class="box-content">
<fieldset>
<legend>Developer Reports</legend>
<div class="control-group">
<label class="control-label" for="select01">Select Developer</label>
<div class="controls">
<select id="select01" class="chzn-select" name="selectdev" onChange="getapp(this.value)">
<option value="">Select developer</option>
<?php
$qry="select user_id from tab_user_login where type='Developer' and status='approved'";
$res=mysql_query($qry);
while($row=mysql_fetch_array($res))
{
$devid=$row[0];
$qry1="select name from tab_user where user_id='$devid'";
$res1=mysql_query($qry1);
while($row1=mysql_fetch_array($res1))
{
?>
<option value="<?php echo $devid;?>" <?php if($dev!="") { if($dev==$devid) {echo 'selected'; } } ?> ><?php echo $row1[0];?></option>
<?php
}
}
?>
</select>
</div>
</div>
<h3> Select Date Range </h3>
<div class="control-group">
<div class="controls">
<label>
<input type="radio" name="selectdateradio" value="selectdaterange" onChange="enableblock()"> Select a Date Range
<div class="control-group" id="daterange" style="display:none">
<label class="control-label" for="select01">Select Date</label>
<div class="controls">
<select id="select01" name="selectdate" id="selectdate" onChange="getYesterdaysDate(this.value)">
<option value="Today" >Today</option>
<option value="Yesterday" >Yesterday</option>
<option value="Last 7 Days" >Last 7 Days</option>
<option value="Last 30 Days" >Last 30 Days</option>
<option value="This Week" >This Week</option>
<option value="This Month" >This Month</option>
<!--<option value="Last 6 Months" >Last 6 Months</option>-->
</select>
<input type="hidden" name="hiddendate" value="" >
<input type="hidden" name="hiddennext" value="" >
</div>
</div>
</label>
<label>
<input type="radio" name="selectdateradio" value="selectcustomdate" onChange="enablecustomblock()"> Select Custom Date
<div class="control-group" id="customdaterange" style="display:none">
<div class="control-group">
<label class="control-label" for="date01">Start input</label>
<div class="input-append date datepicker" data-date="2012-02-12" data-date-format="yyyy-mm-dd">
<input name="start_date" id="start_date" type="text"/><span class="add-on "><i class="icon-calendar"></i></span>
</div>
<!--<div class="controls">
<input type="text" class="input-xlarge datepicker" name="start_date" id="start_date" onChange="show()"/>
</div>-->
</div>
<div class="control-group">
<label class="control-label" for="date01">End Date</label>
<div class="input-append date datepicker" data-date="2012-02-12" data-date-format="yyyy-mm-dd">
<input name="end_date" id="start_date" type="text"/><span class="add-on "><i class="icon-calendar"></i></span>
</div>
<!-- <div class="controls">
<input type="text" class="input-xlarge datepicker" name="end_date" id="end_date" onChange="show()"/>
</div> -->
</div>
</div>
</label>
</div>
</div>
<div class="form-actions">
<input type="submit" class="btn btn-primary" name="submit" value="Run Reports" >
<button type="reset" class="btn">Reset</button>
</div>
</fieldset>
</div>
</form>
<?php
if(isset($_POST['submit']))
{
$dev=$_POST['selectdev'];
$qryy1="select name from tab_user where user_id='$dev'";
$ress1=mysql_query($qryy1);
$roww1=mysql_fetch_array($ress1);
$devname=$roww1[0];
$selected=$_POST['selectdateradio'];
$customstart=$_POST['start_date'];
$customend=$_POST['end_date'];
$postdate=$_POST['selectdate'];
$hide=$_POST['hiddendate'];
$hidden=date("Y-m-d", strtotime($hide));
$hide1=$_POST['hiddennext'];
$hidden1=date("Y-m-d", strtotime($hide1));
date_default_timezone_set("Asia/Kolkata");
$today=date('Y-m-d');
/*$click=0;
$imp=0;
$install=0;
$rev=00.00;
$active=0;*/
}
else
{
}
if($_POST['selectdev']=='')
$devname='All Developer';
if($_POST['selectdate']=='')
$postdate="";
?>
</div>
答案 0 :(得分：1)
您必须在生成选择元素之前设置已发布变量。然后你可以检查当前的开发者
请在生成select元素之前尝试此代码（例如在<div class="box-container-toggle">上方）：
<?php
if(isset($_POST['selectdev']) && $_POST['selectdev']!='') {
$selectdev = $_POST['selectdev'];
}
?>
然后使用您的检查条件如下
<select id="select01" class="chzn-select" name="selectdev" onChange="getapp(this.value)">
<option value="">Select developer</option>
<?php
$qry="select user_id from tab_user_login where type='Developer' and status='approved'";
$res=mysql_query($qry);
while($row=mysql_fetch_array($res))
{
$devid=$row[0];
$qry1="select name from tab_user where user_id='$devid'";
$res1=mysql_query($qry1);
while($row1=mysql_fetch_array($res1))
{
?>
<option value="<?php echo $devid;?>" <?php if(isset($selectdev) && $selectdev==$devid) echo 'selected="selected"'; ?> ><?php echo $row1[0];?></option>
<?php
}
}
?>
</select>