mysql - PHP Basket quantity variable -

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i trying create php page materials database populated. users should able enter quantity next item wish order , have created qty text field this

<?php session_start(); include("db.php"); $pagename="order material"; echo "<html>";  echo "<title>".$pagename."</title>"; echo "<h2>".$pagename."</h2>";  include ("detectlogin.php");  echo "<link rel=stylesheet type=text/css href=mystylesheet.css>";    $sql="select * material";  $result=mysqli_query($con, $sql) or die(mysqli_error($con));  echo "<table border=1>";     echo "<tr>";     echo "<th>material name</th>";     echo "<th>material description</th>";     echo "<th>toxicity level</th>";     echo "</tr>";          while ($arraymaterials=mysqli_fetch_array($result))     {             echo "<tr>";             echo "<td>".$arraymaterials['materialname']."</td>";                 echo "<td>".$arraymaterials['materialdescrip']."</td>";              echo "<td>".$arraymaterials['materialtoxicity']."</td>";             echo "<td>enter quantity</td>";             echo "<td><input type=text name=qty value=qty size=5></td>";                     echo "<form action=request_material.php method=post>";             echo "<input type=hidden name=materialcode value=".$arraymaterials['materialcode'].">";             echo "<td><input type=submit value='request'></td>";             echo "</form>";             echo "</tr>";      }        echo "</table>";  ?>

however, cannot post value of qty on next page though have $qty=$_post['qty']; on request_material.php. know why value entered in qty field cannot posted onto request_material.php page? need session variable?

thanks

because input tag name="qty" outside form tag

echo "<td><input type=text name=qty value=qty size=5></td>";// outside form tag echo "<form action=request_material.php method=post>"; echo "<input type=hidden name=materialcode value=" . $arraymaterials['materialcode'] . ">"; echo "<td><input type=submit value='request'></td>"; echo "</form>";

you need add inside form tag as

echo "<form action=request_material.php method=post>";          echo "<td><input type=text name=qty value=qty size=5></td>";// add inside          echo "<input type=hidden name=materialcode value=".$arraymaterials['materialcode'].">";         echo "<td><input type=submit value='request'></td>";         echo "</form>";

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