Send a variable number of POST array variables to their own array - php

Question

I've got a dynamic form that allows a user to create as many form elements as they need -- then submit them. For this, I have prepared the input names as arrays like
<input name="title[]" ...
and posting them gives me output like
Array
(
[day] => 0
[project_id] => 5
[submit] => publish
[id] => Array
(
[0] => 4
[1] => 5
)
[title] => Array
(
[0] => Step 1
[1] => Step 2
)
[max_vol] => Array
(
[0] => 2
[1] => 3
)
[description] => Array
(
[0] => df dofi dofidfoi
[1] => dfvpdofvdpfo osd pod
)
)
I've created something that allows me to just grab the post arrays like so
foreach( $_POST as $post_key ) {
// ignore non-array post variables
if( is_array( $post_key ) ) {
foreach( $post_key as $form_value ) {
echo "$form_value\n";
}
}
}
/* ouputs...
4
5
Step 1
Step 2
2
3
df dofi dofidfoi
dfvpdofvdpfo osd pod
*/
which nicely sorts the non-arrays from the arrays, but I can't figure out how to take this variable number of created form elements and prepare them into an array variable that looks something like...
Array
(
[0] => Array
(
'id' => 4, 'title' => 'Step 1', 'max_vol' => '2', 'description' => 'df dofi dofidfoi'
),
[1] => Array
(
'id' => 5, 'title' => 'Step 2', 'max_vol' => '3', 'description' => 'dfvpdofvdpfo osd pod'
),
// could be more or less elements...
);
(I will be eventually passing these arrays to a MySQL query builder function).
Thanks.

Answer 1

How about creating a variable that is outside the scope of the foreach loop
$results = array();
foreach( $_POST as $post_key=>$post_value ) {
// ignore non-array post variables
if( is_array( $post_value ) ) {
foreach( $post_value as $form_key=>$form_value ) {
if (!isset($results[$form_key]))
{
$results[$form_key] = array();
}
$results[$form_key][$post_key] = $form_value;
}
}
}
// results is your array variable
print_r($results);

Answer 2

Iterate over some significant $_POST-array key, for example - id and get the values from other $_POST-arrays with the same index:
$values = array();
foreach ($_POST['id'] as $k => $v) {
$values[] = array(
'id' => $v,
'title' => $_POST['title'][$k],
'max_vol' => $_POST['max_vol'][$k],
'description' => $_POST['description'][$k],
);
}
print_r($values);