PHP POST via JSON is empty

Question

I have a basic form that post to PHP file.

<form action="index.php" method="POST">
<input name="operation" id="operation" placeholder="operation" />
<br>
<input id="name" name="name" placeholder="Name" />
<br>
<input id="email" name="email" placeholder="Email"/>
<br>
<input id="password" name="password" placeholder="Password"/>
<br>
<button type="submit" >POST</button>
</form>

problem is the operation is posting NULL or empty via the index file below. I am using the basic php://input to get encoded via json.

if ($_SERVER['REQUEST_METHOD'] == 'POST')
{
    $data = json_decode(file_get_contents('php://input'));

    if(isset($data -> operation)){

      $operation = $data -> operation;
      echo $operation;
       if(!empty($operation)){

       }else{

           //$operation is empty ...

       }

     }else{

          //$operation is not set ...

     }

  }

However echoing the file_get_contents('php://input') displays the correct values from the posted form.

Any reason why the $operation return is always empty?

its a text field and is used like so ... if($operation == 'register'){ //...} — BENN1TH
– BENN1TH, Commented Feb 5, 2017 at 0:32
debugging: var_dump($data->operation, $operation); to see what it actually contains? — Ryan Vincent
– Ryan Vincent, Commented Feb 5, 2017 at 0:34
both var_dump($data->operation); //returns NULL var_dump(json_decode(file_get_contents("php://input"))); //returns NULL yet i physically type a value into the form input ... — BENN1TH
– BENN1TH, Commented Feb 5, 2017 at 0:36
more debugging: var_dump($_POST, $_POST['operation']); to see if it is in there? — Ryan Vincent
– Ryan Vincent, Commented Feb 5, 2017 at 0:38
Yes both var_dump(file_get_contents('php://input')); var_dump($_POST, $_POST['operation']); output the POST Data ... — BENN1TH
– BENN1TH, Commented Feb 5, 2017 at 0:40

AMEACHAQ YOUSSEF · Accepted Answer · 2017-02-05 01:07:22Z

2

Your data should be prepared before convert to Json format Try this code :) I test this Code, it work. Good Luck



    if ($_SERVER['REQUEST_METHOD'] == 'POST')
{

    $data = file_get_contents('php://input');
    $data = str_replace('=','":"',$data);
    $data = str_replace('&','","',$data);
    $data = '{"'.$data.'"}';

    $data = json_decode($data);

    if(isset($data->operation)){

      $operation = $data -> operation;
      echo $operation;
       if(!empty($operation)){
            echo "NOT EMPTY";
       }else{

            echo "IS EMPTY";
           //$operation is empty ...

       }

     }else{
            echo "NO OPERATION";
          //$operation is not set ...

     }

  }

answered Feb 5, 2017 at 1:07

AMEACHAQ YOUSSEF

514 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

PHP POST via JSON is empty

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related