Insert and update in one form - php

Question

yesterday my question regarding insert and update in one form i did but data are inserted and when i am clicking on edit link which is available on displayp.php it display all data's in field but when i am update any data and click on submit button its not update but it insert data next time in database and i am getting multiple record in database. Actually I had put insert and update in if condition when i am updating its not moving in else part so please help me... Thank You..
<div id="page-wrapper" >
<div id="page-inner">
<div class="row">
<div class="col-md-12">
<h2>Add Product</h2>
</div>
</div>
<!-- /. ROW -->
<hr />
<div class="row">
<?php
include('config.php');
if($_SERVER['REQUEST_METHOD']=='POST')
{
if(isset($_POST['submit'])=='POST')
{
echo "working";
$fileName=$_FILES["filepdf"]["name"];
$fileSize=$_FILES["filepdf"]["size"]/2024;
$fileType=$_FILES["filepdf"]["type"];
$fileTmpName=$_FILES["filepdf"]["tmp_name"];
if($fileType=="application/pdf"){
if($fileSize<=200){
//New file name
$random=rand(1111,9999);
$newFileName=$random.$fileName;
//File upload path
$uploadPath="testUpload/".$newFileName;
//function for upload file
if(move_uploaded_file($fileTmpName,$uploadPath))
{
echo "Successful<BR>";
echo "File Name :".$newFileName."<BR>";
echo "File Size :".$fileSize." kb"."<BR>";
echo "File Type :".$fileType."<BR>";
}
else
{
echo "Maximum upload file size limit is 200 kb";
}
}
else
{
return false;
echo "You can only upload a pdf doc file.";
}
echo "here downld";
$updates = isset($_POST['updates']) ? 'Yes' : 'No';
$catnm=$_POST['catnm'];
$prodnm=$_POST['prodnm'];
$prod_dtl=$_POST['prod_dtl'];
//$updates=$_POST['downld'];
$date=$_POST['date'];
$query=("insert into addproduct(catnm,prodnm,prod_dtl,pdf,downld,date)
values('$catnm','$prodnm','$prod_dtl','$uploadPath','$updates','$date')");
$result = mysql_query($query,$conn);
echo"record inserted";
if($result)
{
header("location:addProduct.php");
}
}
}
}
else if($_SERVER['REQUEST_METHOD']=='GET')
{
if(isset($_GET['id']))
{
$id = $_GET['id'];
if(isset($_POST['submit']))
{
$updates['downld'] = isset($_POST['downld']) ? 'Yes' : 'No';
$cat['catnm']=$_POST['catnm'];
$prodnm['prodnm']=$_POST['prodnm'];
$prod_dtl['prod_dtl']=$_GET['prod_dtl'];
$pdf['pdf']=$_GET['pdf'];
$downld['downld']=$_GET['downld'];
$date['date']=$_GET['date'];
$query3=mysql_query("update addproduct set catnm='$cat',
prodnm='$prodnm',prod_dtl='$prod_dtl'
,pdf='$pdf',downld='$updates',date='$date' where id='$id'");
if($query3)
{
header('location:addProduct.php');
}
}
$query1=mysql_query("select * from addproduct where id='$id'");
$query4=mysql_fetch_array($query1);
//echo "<pre>";
//print_r($query4);
}
}
?>
<div class="col-md-6 col-sm-12 col-xs-12">
<div class="panel-body">
<form role="form" method="post"
enctype="multipart/form-data" name="myform" >
<br/>
<label>Select Category:</label>
<div class="form-group">
<?php
include('config.php');
$query1=mysql_query("select catnm from addcategory");
?>
<select class=form-control m-b-10 name=catnm id=catnm >
<?php
echo"<option>---Select---</option required>";
while($query=mysql_fetch_array($query1))
{
$selectedCat = '';
if($query[catnm] == $query4['catnm'])
{
$selectedCat = "selected";
}
echo "<option value='$query[catnm]' $selectedCat >$query[catnm]</option>";
}
?>
</select>
<br/>
<div class="form-group">
<input type="text" class="form-control"
id="prodnm" placeholder="Product Name" name="prodnm" required
value= " <?php if(isset($query4['prodnm'])){echo $query4['prodnm'];}?>"/>
</div>
<div class="form-group">
<textarea class="form-control" id="catdtl"
name="prod_dtl" placeholder="Product Detail"
"rows="10" cols="62" required>
<?php if(isset($query4['prod_dtl'])){
echo $query4['prod_dtl'];} ?>
</textarea>
</div>
<div class="form-group">
<label for="exampleInputFile">PDF File</label>
<input type="file" id="exampleInputFile"
accept="application/pdf" name="filepdf" required >
file : <?php if(isset($query4['pdf'])){
echo $query4['pdf'];} ?>
</div>
<div class="checkbox">
<label>
<input id="checkbox" type="checkbox" name="updates" required
<?php if(isset($query4['downld']))
{ if($query4['downld'] == 'Yes')
echo "checked='checked'"; echo $query4['downld'];}
?> />
Is Downloadable <br />
</label>
</div>
<input type="text"
placeholder="Date of Upload" id="datepicker-7"
name="date" value="<?php if(isset($query4['date'])){
echo $query4['date'];}?>" required />
<div style="padding-top:20px;padding-bottom:40px;width:650px;">
<input type="submit" name="submit" id="button" tabindex="2"/>
<hr/>
</form>
</div>
<!-- /. ROW -->
</div>
<!-- /. PAGE INNER -->
</div>
<!-- /. PAGE WRAPPER -->
</div>
</body>
</html>

Answer 1

I answered you yesterday, but you not added an hidden input with id. This you can do?
insert and update in one form in php
Also, How you imagine this post in get?
if(isset($_GET['id']))
{
$id = $_GET['id'];
if(isset($_POST['submit']))
{
* * *
}
}