Php array post values dificulties

Question

Hello, I cant seem to understand why I cant pass any values with the following code:

<div class="menu">
Por favor seleccione os conteúdos:
<form name="Categorias" action="Elementos_Descritivos.php" method="post">
<?php 

$Categorias = array ("Nome", "Data", "Cliente", "Observacoes");

 foreach( $Categorias as $key => $value){

echo "<div class=\"cb-row\">
      <label for=\"$value\">$value:</label>
      <input id=\"$value\" $value=\"$value\" type=\"checkbox\" value=\"$value\" checked />
      </div>";
}
 ?>
   <div class="submit">
    <input type="submit" value="Seguinte" />
</div>
    </form>
</div>
 </div>

In the Elemento_Descritivos.php page All the code i have is:

<?php

 print("<pre>");
 print_r($_POST);
 print("</pre>");

?>

It simply outputs:

Array ( )

Thank you.

Answer 1

You need to set the name attribute on all your inputs for a form post to work. The ID is not posted when a form is submitted.

 <input id=\"$value\" name=\"$value\" .../>

Do the same for your submit button. It will allow you to figure out which submit button was pressed in case you have many in the same form.

Answer 2

As Wadih pointed out - you need to assign a name attribute to your inputs. I've rewritten your code in hopes it becomes a little more clear what is going on. I've also removed the attribute $value=\"$value\".

<div class="menu">
    Por favor seleccione os conteúdos:
    <form name="Categorias" action="Elementos_Descritivos.php" method="post">

    <?php 
    $Categorias = array ("Nome", "Data", "Cliente", "Observacoes");
    foreach( $Categorias as $category){
    ?>

    <div class="cb-row">
     <label for="<?=$category;?>">
      <?=$category;?>
     </label>
     <input
      id="<?=$category;?>"
      name="<?=$category;?>"
      type="checkbox"
      value="<?=$category;?>"
      checked
      />
    </div>

    <?
    } //foreach
    ?>

    <div class="submit">
     <input name="categories" type="submit" value="Seguinte" />
    </div>
    </form>
</div>