Not able to get $_POST assigned to a variable PHP - php

Question

I assume I have something stupid happening due to my lack of experience.
On a form on members.php I have:
$column = 0;
echo "<Form Name =member Method =POST ACTION = individual.php>";
echo "<table>";
echo "<tbody>";
while($row = $rs->fetch_assoc()) {
if ($column == 0) {
echo "<tr>";
}
echo '<td><INPUT TYPE = Submit NAME="'. $row['num'].'" VALUE ="'. $row['name'].'" id=Submit></td>';
$column++;
if ($column >= 5) {
echo "</tr>";
$row++;
$column=0;
}
}
echo "</tbody>";
echo "</table>";
echo "</form>";
On individual.php I have
print_r($_POST);
With the result being Array ( [16] => LUKE ) which is what is expected.
but when I try to
$name=$_POST['name'];
$num=$_POST['num'];
echo "<br>".$name." ".$num."<br>";
I do not get any results.
I mainly want to get $row['num'] but also did ['name'] to make sure I didn't transpose what I was trying to achieve.
I basically want to take what was selected on previous form and insert into a
select * from table where number=$num;

Answer 1

The name of your input fields are not num and name, instead, they are the values of these two keys in the array $row. That is why you are unable to retrieve these values on the backend.
Change your code to:
<input type="hidden" name="name" value="<?php echo $row['name']; ?>;">
<input type="hidden" name="num" value="<?php echo $row['num']; ?>;">
<input type="submit" value="Submit!" name="submit_form">

Answer 2

For obtain POST value for 'name' and 'num', you have to write:
<input type="text" name="name" value="<?php echo $row['name']; ?>">
<input type="text" name="num" value="<?php echo $row['num']; ?>">
type can be 'text' or 'hidden'
Enjoy your code!

Answer 3

If you want your form to return values that you can access using $_POST['name'] and $_POST['num'], you need to set name and num as input names on your form, and the appropriate values as the input values. If you don't want to add them as visible/editable values in your form, the usual way to do it is to use inputs of type hidden:
<form action="individual.php">
<input type="hidden" name="num" value="16" />
<input type="hidden" name="name" value="LUKE" />
<input type="submit" />
</form>
As it is, $_POST does contain the values that you're want, but they're not in an accessible format, because you've set 16 as an input name, so it turns into a key in the $_POST associative array. The form above will set num and name as keys in $_POST, and 16 and LUKE respectively as the values.