INSERT a row per array object

I am in the process of creating a document association tool whereby users can associate documents to a ticket from a pre-existing list of documents.

Thanks to the help of Alberto Ponte I was able to construct the initial radio box system (originally checkbox, changed for obvious reasons) from this question: Separate out array based on array data

Now that I have the radio buttons presenting correctly I am trying to get the data inserted into a MySQL with a row for each document. Following on from this I want to have it look up the table for each object and see if there is an existing entry and update that rather than inset a duplicate entry.

Apologies in advance for the soon to be depreciated code and I will be correcting the code going forward, however that is a much bigger task than I currently have time for.

Also apologies if the code is considered messy. I'm not fantastic at PHP and not too hot on best practices. Any quick pointers are always welcome.

Display code:

<?php

include "../includes/auth.php";
include "../includes/header.php";

## Security ########################################################

if ($company_id != 1 OR $gid < 7) {

echo'          <div class="pageheader">
                  <div class="holder">
                     <br /><h1>Access Denied <small> Your attempt has been logged</small></h1>
            </div>
         </div>
';
exit();
}

// GET Values ###################################################
$jat_id = intval($_GET['id']);
$div_id = intval($_GET['div_id']);




## Page Start ########################################################



echo '
               <div class="pageheader">
                  <div class="holder">
                     <br /><h1>Clovemead Job Management Platform<small> Welcome...</small></h1>
            </div>
         </div>

<div class="well5" style="width:1000px !important;">
<h3>Create Document Association</h3>

<table border=1>
  <tr>
    <td align=center><p>Here you can associate documents to Jobs and Tasks to.</p> </td>
  </tr>
</table>';

            $order2 = "SELECT * FROM documents";
                $result2 = mysql_query($order2);
                while ($row2 = mysql_fetch_array($result2)) {

                $nice_name = $row2['nice_name'];
                $doc_id = $row2['id'];

}


echo '


<h3>Documents</h3>

<table border=1>
  <tr><th>Document Name</th><th>Document Type</th><th>Required</th><th>Optional</th><th>Not Required</th></tr>
';



            $order2 = "SELECT * FROM documents ORDER BY type_id";
                $result2 = mysql_query($order2);
                while ($row2 = mysql_fetch_array($result2)) {

                $nice_name = $row2['nice_name'];
                $doc_id = $row2['id'];
                $doc_type_id = $row2['type_id'];

echo '

  <tr>
    <td>'.$nice_name.'</td>';

            $order3 = "SELECT * FROM document_types WHERE id = '$doc_type_id'";
                $result3 = mysql_query($order3);
                while ($row3 = mysql_fetch_array($result3)) {

                $type_name = $row3['type_name'];

echo '
    <td>'.$type_name.'</td>
    <form method="post" action="create-doc-assoc-exec.php">
        <input type="hidden" value="'.$doc_id.'" name="doc_id">
        <input type="hidden" value="'.$jat_id.'" name="jat_id">
        <input type="hidden" value="'.$div_id.'" name="div_id">';

                $order4 = "SELECT * FROM document_assoc WHERE doc_id = '$doc_id'";
                $result400 = mysql_query($order4);
                $_results = mysql_fetch_array($result400);
                if (!$_results) {
    echo '
                    <td><input type="radio" name="req0" value="2"></td>
                        <td><input type="radio" name="req0" value="1"></td>
                        <td><input type="radio" name="req0" value="0" checked ></td>';
                    } else {
                            foreach ($_results as $result400) {
                            $requirement = $_results['requirement'];
                                        }
                    $name = "req".$doc_id;

    echo '
            <input type="hidden" value ="'.$name.'" name="name">
                <td><input type="radio" name="'.$name.'" value="2" '; if ($requirement == 2) { echo ' checked '; } echo '></td>
                <td><input type="radio" name="'.$name.'" value="1" '; if ($requirement == 1) { echo ' checked '; } echo '></td>
                <td><input type="radio" name="'.$name.'" value="0" '; if ($requirement < 1) { echo ' checked '; } echo '></td>';


    }

    }

echo '
  </tr>';
}
echo '
</table>

<input type="submit" name="submit value" value="Create Document Association" class="btn success Large"></form>';


            $order2 = "SELECT * FROM divisions WHERE id = '$div_id'";
                $result2 = mysql_query($order2);
                while ($row2 = mysql_fetch_array($result2)) {

                $dbname = $row2['division_dbname'];

            $order3 = "SELECT * FROM $dbname WHERE id = '$jat_id'";
                $result3 = mysql_query($order3);
                while ($row3 = mysql_fetch_array($result3)) {

                $type = $row3['type'];
                $type2 = strtolower($type);

echo '

        <input type="button" value="Back" onclick="window.location=&#39;./view-'.$type2.'.php?id='.$jat_id.'&#39;" class="btn primary Large">



';

}}
echo '
</div>';

include "../includes/footer.php";
?>

Execute Code:

<?php
include "../includes/dbconnect.php";
$name = $_POST['name']; 
$name = stripslashes($name);
$name = mysql_real_escape_string($name);


$doc_id = intval($_POST['doc_id']); 
$jat_id = intval($_POST['jat_id']); 
$div_id = intval($_POST['div_id']); 
$req = intval($_POST[$name]); 
$req_blank = intval($_POST['req0']); 


if ($req_blank == 0) {
$requirement = 0;
} elseif ($req_blank == 1) {
$requirement = 1;
} elseif ($req_blank == 2) {
$requirement = 2;
} elseif ($req == 0) {
$requirement = 0;
} elseif ($req == 1) {
$requirement = 1;
} elseif ($req == 2) {
$requirement = 2;
}


foreach ($doc_id as $doc_id2) {


$order = "INSERT INTO document_assoc (jat_id, dept_id, doc_id, requirement) VALUES ('$jat_id', '$div_id', '$doc_id2', '$requirement')";
$result = mysql_query($order);

            $order1 = "SELECT * FROM divisions WHERE id = '$div_id'";
                $result1 = mysql_query($order1);
                while ($row1 = mysql_fetch_array($result1)) {

                    $dbname = $row1['division_dbname'];



            $order2 = "SELECT * FROM $dbname WHERE id = '$jat_id'";
                $result2 = mysql_query($order2);
                while ($row2 = mysql_fetch_array($result2)) {

                    $type = $row2['type'];
            $type2 = strtolower($type);

if($result){
header("location:view-$type2.php?id=$jat_id&creation=success");
} else {
header("location:view-$type2.php?id=$jat_id&creation=failed");
}
}}

}
?>

A few reference points:

$doc_id is the ID of each document which is to be passed over as an array for use in a (i believe) foreach insert
$jat_id is the ticket id documents are being associated to
$div_id is the department the ticket is associated
And the radio boxes are to decider the requirement of each document.  To be passed over inline with $doc_id

What I have tried:

After a fair bit of searching - finding nothing - rechecking my terminology and searching again I managed to find the suggestion of using base64_encode(serialize()) on the arrays but I could not get this to work.