Undefined variable in PHP

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I am new to php and (Its probably a silly question ).I am trying to make a CRUD application.I am getting error when I try to get the value "$countryName"

Notice: Undefined variable: countryName

if(isset($_GET["edited"])){
$country=$helper->fetchCountry($_GET["countryId"]);
$countryName=$country["countryName"];
  $helper->updateCountry($countryName);
    helper::redirect("?updated=1");

}

<form action="" method="post">
               <div class="form-group">
                   <label>Ülke Adı</label>
                   <input type="text" class="form-control" name="editName"  value="<?php echo $countryName;?>"> HERE
               </div>
               <div class="form-group" align="center">
                   <button  class="btn btn-primary" name="btnEdit">Edit</button>
               </div>
           </form>

this what I have tried so far

What I have tried:

<?php
include "system/config.php";
include "system/helper.php";

$conn=new baglanti();
$helper=new helper();
?>
<!doctype html>
<html lang="en">
<head>
  
</head>
<body>
<?php
$data=$helper->fetchAllData();

if(isset($_POST["btnAdd"])){
   $name=strip_tags($_POST["Name"]);
   $helper->addData($name);
   helper::redirect("?inserted=1");



}
if(isset($_GET["edited"])){
$country=$helper->fetchCountry($_GET["countryId"]);
$countryName=$country["countryName"];
  $helper->updateCountry($countryName);
    helper::redirect("?updated=1");

}
?>
<div class="container">

    <div class="row">
       <div class="col-md-8">

           <form action="" method="post">
               <div class="form-group">
                   <label>Ülke Adı</label>
                   <input type="text" class="form-control" name="editName"  value="<?php echo $countryName;?>">
               </div>
               <div class="form-group" align="center">
                   <button  class="btn btn-primary" name="btnEdit">Edit</button>
               </div>
           </form>

           <form action="" method="post">
               <div class="form-group">
                   <label>Ülke Adı</label>
                   <input type="text" class="form-control" name="Name">
               </div>
               <div class="form-group" align="center">
                   <button  class="btn btn-success" name="btnAdd">Ekle</button>
               </div>
           </form>
       </div>
        <table class="table table-striped">
            <tr>
                <td>Ülke Adi</td>
                <td>Düzenle</td>
                <td>Sil</td>
            </tr>
             <?php
             if(count($data)>0){
                 foreach ($data as $key=>$value){
                     ?>
                     <tr>
                         <td><?php echo $value["countryName"] ;?></td>
                         <td><a href="?edited=1&countryId=<?php echo $value["countryId"];?>">Düzenle</a> </td>
                         <td><a href="?deleted=1&countryId=<?php echo $value["countryId"];?>">Sil</a> </td>

                     </tr>
                     <?php
                 }

             }else{
                 ?>
                 <tr>
                     <div class="row">
                         <td colspan="3" class="">No Data</td>
                     </div>
                 </tr>
            <?php
             }

             ?>
        </table>
    </div>
</div>
</body>
</html>

Posted 8-Feb-19 2:27am

Member 3722539

Updated 11-Feb-19 1:11am

CHill60

v2

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Comments

Richard MacCutchan 8-Feb-19 9:21am

Probably because the line:

$countryName=$country["countryName"];

did not return any data. You need to do some debugging to find out why.

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Suresh Madhavaraju · Answer 1 · 2019-02-11T01:11:00

1. Is that $_GET["edited"] or $_POST["edited"]? How it should be? I see the form's method is "post". Then it should be $_POST["edited"]. Try to change this and see if it works.

2. Also there's a chance for PHP to skip this portion if it's not set, meaning "edited" is not set. So, add the else part for isset($_GET["edited"]) like below:

else
{
$countryName = "";
}

This is to set a blank as default, if not edited.

3. Also I can't understand from your code, how the "edited" mode is handled to identify this record is edited? Anyway the above two options can work.