<h3 align='left'>Stockbook</h3>

<table border='1' width='90%'>
<tr><th>Sr</th><th>Dated</th><th>Medicine Name</th><th>Opening Stock</th><th>Received Qty</th><th>Total Qty</th><th>Used Qty</th><th>Balance Qty</th></tr>

<?php

$tbl = 'medicines';
$medid = $_REQUEST["medid"];

$rs = mysql_query("select *,date(date_creation) as dated from $tbl order by med_name");
while ($o = mysql_fetch_object($rs)) {
	$i++;
	$opening_stock = $o->qty_receipt;
	$qty_total = $opening_stock;
	$qty_balance = $opening_stock;
        
	echo "<tr>
	<td><a name='$i'></a>$i</td>
	<td>$o->dated</td>
 	<td><a href='doctor/?pg=$pg&medid=$o->med_id#$i'>$o->med_name</a></td>
	<td align='right'>$opening_stock</td>";

	//receipt on opening day
	$sr = mysql_query("select med_id,date(rec_datetime) as rec_date,sum(qty_receipt) as qty_receipts from receipts 
        where med_id=$o->med_id and date(rec_datetime)=$o->dated group by med_id,date(rec_datetime)");
       	if (mysql_num_rows($sr)) {
                while ($q = mysql_fetch_object($sr)) {
			$qty_total = $qty_total + $q->qty_receipts;

			echo "<td align='right'>$q->qty_receipts</td>
			<td align='right'>$qty_total</td>";
		}
        } else {
		echo "<td></td>
		<td align='right'>$qty_total</td>";
	} 
        
	//consumption on opening day
        $rr = mysql_query("select med_id,date(dis_datetime) as dis_date,sum(qty) as qty_used from medications
        where med_id=$o->med_id and date(dis_datetime)=$o->dated group by med_id,date(dis_datetime)");
        if (mysql_num_rows($rr)) {
        	while ($r = mysql_fetch_object($rr)) {
                       $qty_balance = $qty_total - $qty_used;

			echo "<td align='right'>$r->qty_used</td>
			<td align='right'>$r->qty_balance</td>";
		}
	} else {
		echo "<td></td>
		<td align='right'>$qty_balance</td>";
	}
	echo "</tr>"; 

	$dated = $o->dated;
	$j = 0;

	//consumption after opening date
	$sr = mysql_query("select med_id,date(dis_datetime) as dis_date,sum(qty) as qty_used from medications
        where med_id=$o->med_id and date(dis_datetime)>$dated group by med_id,date(dis_datetime)");
        if (mysql_num_rows($sr)) {
                while ($q = mysql_fetch_object($sr)) {
                       //purchase receipts after opening date                        
			$rr = mysql_query("select med_id,date(rec_datetime) as rec_date,sum(qty_receipt) as qty_receipts from receipts                        
			where med_id=$o->med_id and date(rec_datetime)<=$q->dis_date group by med_id,date(rec_datetime)");
                        if (mysql_num_rows($rr)) {
                                while ($r = mysql_fetch_object($rr)) {
                                        $j++;
                       			
					$qty_total = $qty_total + $r->qty_receipts;
                        		$qty_balance = $qty_total;

                	        	echo "<tr>
        	                	<td>$i . $j</td>
	                        	<td>$r->rec_date</td>
                        		<td></td>
                	        	<td></td>
        	                	<td align='right'>$r->qty_receipts</td>
	                        	<td align='right'>$qty_total</td>
					<td></td>
					<td align='right'>$qty_balance</td>
					</tr>";
				}
			}
                        $qty_balance = $qty_total - $q->qty_used;
			$j++;

                        echo "<tr>
                        <td>$i . $j</td>
                        <td>$q->dis_date</td>
                        <td></td>
                        <td></td>
                        <td></td>
                        <td align='right'>$qty_total</td>
			<td align='right'>$q->qty_used</td>
                        <td align='right'>$qty_balance</td>";

                        $qty_total = $qty_total - $q->qty_used;
                                }
                        } else {
                                echo "<td>x</td>
                                <td align='right'>$qty_balance</td>";
                        }
                        echo "</tr>";

			$qty_total = $qty_total + $q->qty_receipts;
                       	$qty_balance = $qty_total;
	
			echo "<tr>
                       	<td>$i . $j</td>
                       	<td>$q->rec_date</td>
                       	<td></td>
                       	<td></td>
                       	<td align='right'>$q->qty_receipts</td>
                       	<td align='right'>$qty_total</td>";

			//purchase receipts after opening date
			$rr = mysql_query("select med_id,date(rec_datetime) as rec_date,sum(qty_receipt) as qty_receipts from receipts
        		where med_id=$o->med_id and date(rec_datetime)>$dated group by med_id,date(rec_datetime)");
			if (mysql_num_rows($rr)) {
                                while ($r = mysql_fetch_object($rr)) {
                        		$j++; 
					$qty_balance = $qty_total - $r->qty_used;
                                        
					echo "<td align='right'>$r->qty_used</td>
                                        <td align='right'>$qty_balance</td>";

                                        $qty_total = $qty_total - $r->qty_used;
				}
                        } else {
				echo "<td>x</td>
				<td align='right'>$qty_balance</td>";
			}
			echo "</tr>";
			$dated = $q->rec_date;
		}
	}

        $rr = mysql_query("select med_id,date(dis_datetime) as dis_date,sum(qty) as qty_used from medications
        where med_id=$o->med_id and date(dis_datetime)>$dated group by med_id,date(dis_datetime)");
        if (mysql_num_rows($rr)) {
                while ($r = mysql_fetch_object($rr)) {
			$j++; 
			$qty_balance = $qty_total - $r->qty_used;
                                                
                        echo "<tr>
                        <td>$i . $j</td>
                        <td>$r->dis_date</td>
                        <td></td>
                        <td></td>
                        <td></td>
                        <td align='right'>$qty_total</td>
                        <td align='right'>$r->qty_used</td>
                        <td align='right'>$qty_balance</td>
			</tr>";
			
			$qty_total = $qty_total - $r->qty_used;
		}
	}
}
?>

</table>