Question

I am running the following test below and entering some text into the first text box out of the 20. I am simply trying to echo out the post value in the spec.php page for further processing. When I try it echo’s nothing. My question is, how come if I generate input element code using a loop, where every input ‘name’ attribute is unique, the $_POST variable you would expect to be passed on to spec.php does not echo out?

<form action="spec.php" method="post">
<?php
    for($i=0; $i < 20; $i++){
        echo '<input type="text" style="border:2px solid red;" name="inp'.$i.'" />';
    }

?>
<input type="submit">

spec.php

echo $_POST['inp0'];

Answer 1

First debug your $_POST with the following:

print_r($_POST);

See if all your inputs are in there.

Edit:
I just used the following and it works!

 <form method="post" action="action.php">
 <?php
  for($i=0; $i < 20; $i++){
    echo '<input type="text" style="border:2px solid red;" name="inp'.$i.'" />';
  }
  ?>
 <input type="submit">

action.php

<?php print_r($_POST);

result:

Array
(
[inp0] => one 
[inp1] => two
[inp2] => three
[inp3] => four 
[inp4] => five
[inp5] => six
[inp6] => seven
[inp7] => blah
[inp8] => blah
[inp9] => blah
[inp10] => blah
[inp11] => blah
[inp12] => 
[inp13] => 
[inp14] => 
[inp15] => 
[inp16] => 
[inp17] => 
[inp18] => 
[inp19] => 
)