php - setting input in an associate array then loop through the entries -

i have associative array that's being populated user input. set array session variable can add on top of array every time new input entered.

warning: invalid argument supplied foreach()

<?php session_start(); ?>  <h1>     <?php          foreach ($_session['formonearrayglobal'] $x => $xvalue) {             echo $x . $xvalue;         }     ?> </h1> <form action="send.php" method="post" name="form-one">     <input type="text" name="name">     <input type="text" name="number">     <button type="submit">submit</button> </form>  <?php     session_start();     try {         if (!empty($_post['form-one'])) {             $variableone = $_post['name'];             $variabletwo = $_post['number'];              $formonearray[$variableone] = $variabletwo;              $_session['formonearrayglobal'] = $formonearray;      } catch(exception $e) {         echo $e;     } ?> 

you have put check first time if there no data in $_session['formonearrayglobal']

 if(isset($_session['formonearrayglobal']) && !empty($_session['formonearrayglobal'])){               foreach ($_session['formonearrayglobal'] $x => $xvalue) {                 echo $x . $xvalue;             }     }