PHP while loops and if statement issues when pulling from multiple tables - php

Question

I have 2 tables with a unique ID. I have a table with one of the columns being a date field. I am attempting to filter the field by today's date (which it works) from all the rows with "todays" date I want to get the cell info for #key. Once I have that ID, I want to match it with #headkey. So $headkey == $key. Once I filter that, I want to see if any of the fields match = Delivery for the ItemID column. For some reason I have an infinite loop. I played around with the logic but can't seem to get it to work. Any ideas?
$TransactionSql = "SELECT * FROM apcshead WHERE DateInvoiced > 0 ORDER BY DateInvoiced DESC";
$ItemsSql = "SELECT * FROM apcsitem";
$rs=odbc_exec($conn,$TransactionSql);
while($row = odbc_fetch_array($rs))
{
//Grabbing Transaction info
$DateInvoiced = odbc_result($rs,"DateInvoiced");
$ApcsheadKey = odbc_result($rs,"Key");
$DateInvoiced = new DateTime($DateInvoiced);
$DateInvoiced_date = $DateInvoiced->format('m-d-Y');
//$TimeStamp_time = $TimeStamp->format('h:i:s');
if ($DateInvoiced_date == $today)
{
$ItemsRs=odbc_exec($conn,$ItemsSql);
while($row = odbc_fetch_array($ItemsRs))
{
$HeadKey = odbc_result($ItemsRs,"HeadKey");
$ItemID = odbc_result($ItemsRs,"ItemID");
if ($ItemID == 'Delivery')
{
echo 'Delivery';
echo '<br />';
}
}
}
}
*UPDATE:*I modified the code again. Now what if does is it spits out 1 row with the date and then like 100 echo Delivery and then goes back and spits out another date and the same thing. Still not sure what is going on.
$TransactionSql = "SELECT * FROM apcshead WHERE DateInvoiced > 0 ORDER BY DateInvoiced DESC";
$ItemsSql = "SELECT * FROM apcsitem";
$rs=odbc_exec($conn,$TransactionSql);
while($row = odbc_fetch_array($rs))
{
$DateInvoiced = odbc_result($rs,"DateInvoiced");
$DateInvoiced = new DateTime($DateInvoiced);
$DateInvoiced_date = $DateInvoiced->format('m-d-Y');
echo $DateInvoiced_date;
echo '<br />';
if ($DateInvoiced_date == $Today)
{
echo $DateInvoiced_date;
echo '<br />';
$ItemsRs=odbc_exec($conn,$ItemsSql);
while($row = odbc_fetch_array($ItemsRs))
{
$ItemID = odbc_result($ItemsRs,"ItemID");
if ($ItemID == 'Delivery')
{
echo 'Delivery';
}
}
}
}

Answer 1

I solved the issue using the INNER JOIN command. It is great because I don't have to do nested loops :)
Learned how to do it from W3Schools. http://www.w3schools.com/sql/sql_join_inner.asp
This is my current SQL Statement:
$TransactionSql = "SELECT apcshead.Key, apcshead.DateInvoiced, apcshead.InvNum, apcsitem.Headkey, apcsitem.ItemID FROM apcshead INNER JOIN apcsitem ON apcshead.Key=apcsitem.Headkey";