polling system help

[anm]

I'm writing a flatfile polling system. To add a poll, what I have is a form that asks how many options you want, and then displays a form for poll name, poll question, and then loops until it's got enough option input boxes.

Now, I add each option to an array like so:

	$poll = array(
     "question" => "$question",
     "options" => array($one, $two, $three, $four, $five),
     "votes" => array(0, 0, 0),

);

But how can I use the number of options I got in the form to know how many to put in the options sub-array? Because otherwise I'll have a bunch of empty (or just weird) options that don't exist, and I can't know how many someone wants (10, 15, 100, etc.)

So how can I grab the options from the form and put them in the array? Here's the whole code:

if(!isset($_GET['num'])) {

  ?>
  <p><form method="get" action="index.php?id=new">
  <input type="text" name="num" value="Number of Options" />
  <input type="hidden" name="id" value="new" />
  <input type="submit" value="Go to Step 2" />
  </form></p>
  <?php
  }
  else {
  ?>
  <p><form method="post" action="index.php?id=new">
  <input type="text" name="name" value="Poll Name" /><br />
  <input type="text" name="question" value="Poll Question" /><br />
         <?php
  $n = $_GET['num'];
  for($t=1; $t<=$n; $t++) {
  ?>
  <input type="text" name="<?php echo $t; ?>" value="Option <?php echo $t; ?>" /><br />
  <?php
  }
  ?>
  <input type="hidden" name="addpoll" /><br />
  <input type="submit" value="Add Poll!" />
  </form></p>
	<?php
	$question = $_POST['question'];
	$name = $_POST['name'];
	$options = str_replace( "\\", "", $options);
	$poll = array(
     "question" => "$question",
     "options" => array($one, $two, $three, $four, $five),
     "votes" => array(0, 0, 0),

);

$dat_file = "$name.dat";
$poll_data = serialize($poll);
$handle = fopen($dat_file,'w+');
fwrite($handle,$poll_data);
fclose($handle);
	}

So I need a way to get the options, and put them into the array. . .

[rehfeld]

you can specify form fields to be loaded into an array when submitted to php by placing [] after the name:

<?php

print_r($_POST['options']); // works


?>

<form>

<input type="text" name="options[]">
<input type="text" name="options[]">
<input type="text" name="options[]">
<input type="text" name="options[]">

then you can iterate through them using a loop, and you can count($_POST['options']) just like any other array.

you can use multidimensional arrays, and array keys too 🙂

<input type="text" name="options[7]">
<input type="text" name="options[foo]">

<input type="text" name="options[foo][bar][baz]">

[anm]

See, the options array is part of another array, and I need to insert the values into that. . .how do I do that? Because I need to insert only the number of options into the array. So I have this array:

	$poll = array(
     "question" => "$question",
     "options" => array($one, $two, $three, $four, $five),
     "votes" => array(0, 0, 0),

);

But I need a way to insert values (and any amount of numbers) instead of $one etc.

How?