Inserting values into another table using a conditional statement - php

Question

I'm trying to insert values to another table using conditional statement but the values does not insert inside the table.
<?php
if($_POST['save'])
{
$pr_no = $_POST['pr_no'];
$s = mysqli_query($connect,"SELECT purchase_no FROM `sms_request` WHERE purchase_no = '".$pr_no."'");
if(mysqli_num_rows($s) > 0)
{
echo"<script type='text/javascript'>
alert('Purchase No. Existed!');
window.location.href = 'sms_supply management.php';
</script> ";
}
else
{
$fcluster = $_POST['fund_cluster'];
$osection = $_POST['office_section'];
$pr_no = $_POST['pr_no'];
$rcode = $_POST['responsibility_code'];
$desig = $_POST['desig'];
$requester = $_POST['requester'];
$loc = $_POST['loc'];
$purpose = $_POST['prpose'];
$ename = $_POST['entity_name'];
$date = $_POST['date'];
$dateA = date("Y-m-d",strtotime($date));
$radioo = $_POST['supply_type'];
$ins = mysqli_query($connect, "INSERT INTO sms_purchaserecord(purchase_no, supply_type) VALUES ('".$pr_no."', '".$radioo."')");
$insS = mysqli_query($connect, "INSERT INTO sms_ris(purchase_no, ris_num) VALUES ('".$pr_no."', '".$pr_no."')");
$insert = mysqli_query($connect, "INSERT INTO sms_request(purchase_no,sms_request.date, entity_name, fund_cluster, office_section, responsibility_code, purpose, stat) VALUES ('".$pr_no."','".$dateA."','".$ename."', '".$fcluster."', '".$osection."', '".$rcode."','".$purpose."', '1')");
$inS = mysqli_query($connect, "INSERT INTO sms_iar(iar_num, purchase_no) VALUES ('".$pr_no."', '".$pr_no."')");
$select = mysqli_query($connect, "SELECT request_IDnum FROM sms_request WHERE purchase_no = '".$pr_no."'");
while ($row = mysqli_fetch_array($select)){
$rnum = $row['request_IDnum'];
}
$select2 = mysqli_query($connect, "SELECT * FROM sms_branchloc WHERE loc_ID_no = '".$loc."'");
while ($row1 = mysqli_fetch_array($select2)){
$loc_num = $row1['loc_ID_no'];
}
if ($rnum != NULL AND $loc_num != NULL){
$insert2 = mysqli_query($connect, "INSERT INTO sms_requester(request_IDnum, name, loc_ID_no, position) VALUES ('".$rnum."', '".$requester."', '".$loc_num."', '".$desig."')");
}
if ($radioo == 'expandable'){
$insertI = mysqli_query($connect, "INSERT INTO inventory_status(stock_prop_num, description, unit, quantity, price) VALUES ('".$pr_num."','".$unit."','".$desc."','".$qty."','".$cost."')");
}
// If I choose expandable on the radio button it will insert into the inventory_status table
foreach ($_POST['sp_num'] as $row=>$sp_numm) {
$sp_num = $sp_numm;
$unit = $_POST['unt'][$row];
$desc = $_POST['sdesc'][$row];
$qty = $_POST['sqty'][$row];
$cost = $_POST['cost'][$row];
$query = mysqli_query($connect,"INSERT INTO sms_supply (supply_qty,purchase_no,unit_cost,supply_unit,supply_desc,stockproperty_num) VALUES ('".$qty."','".$pr_no."', '".$cost."', '".$unit."','".$desc."', '".$sp_num."')");
}
echo"<script type='text/javascript'>
alert('Purchase Request Save.');
window.location.href = 'sms_supply management.php';
</script>";
}
}
What I wanted to do is if I choose expandable on the radio button it will insert the values into the inventory_status table. The block of code that didn't work is
if ($radioo == 'expandable')
{
$insertI = mysqli_query($connect, "INSERT INTO
inventory_status(stock_prop_num, description, unit, quantity, price) VALUES('".$pr_num."', '".$unit."','".$desc."', '".$qty."', '".$cost."')");
Do I need to connect the 2 tables with a primary key and foreign key?