MySQL query - IF statement to generate two different rows - php

Question

I have some issues with below script, essentially what I'm trying to achieve is to grab different product and prices and generate a table which works fine. However, some of the products do have an extra charge, in this case the product will use three rows (price, extra charge and total sum). I'm trying to get the IF statement to work as follows: if the extra charge = 0 then it should only make a single row in the table, if more then 0 it should produce the 3 row version.
Someone have any idea what I'm doing wrong? Thanks in advance!
<?php
$page=basename($_SERVER['PHP_SELF']); /* Returns PHP File Name */
$page_name=str_replace(".php","",$page);
mysql_connect(localhost,$dbuser,$dbpass);
#mysql_select_db($database) or die( "Unable to select database");
$query= ("SELECT * FROM table e
JOIN validdate1 r ON e.datevalid1=r.id
JOIN validdate2 d ON e.datevalid2=d.id
WHERE productpage='$page_name'
ORDER BY productname,price2");
$result=mysql_query($query);
$num=mysql_numrows($result);
mysql_close();?>
<table>
<thead>
<tr>
<th class="headerdesc">Description</th>
<th class="headerprice1 rates1">2015</th>
<th class="headerprice2 rates2">2016</th>
</tr>
</thead>
<?php $i=0;while ($i < $num)
{
$productname = mysql_result($result,$i,"productname");
$price1=mysql_result($result,$i,"price1");
$price2=mysql_result($result,$i,"price2");
$extracharge1=mysql_result($result,$i,"extracharge1");
$extracharge2=mysql_result($result,$i,"extracharge2");
$daterange1=mysql_result($result,$i,"daterange1");
$daterange2=mysql_result($result,$i,"daterange2");
if ($extracharge1 > "0") {
echo " <tr>
<td class="desc"><?php echo $productname; ?></td>
<td class="price1 rates1">$<? echo $price1; ?></td>
<td class="price2 rates2">$<? echo $price2; ?></td>
</tr>
<tr>
<td class="extra">Extra Charge**</td>
<td class="price1 rates1">$<? echo $extracharge1; ?></td>
<td class="price2 rates2">$<? echo $extracharge2; ?></td>
</tr>
<tr class="lastrow">
<td class="totalprice"><strong>Total price</strong></td>
<td class="total rates1"><strong>$<? echo $price1+$extracharge1; ?></strong></td>
<td class="total rates2"><strong>$<? echo $price2+$extracharge2; ?></strong></td>
</tr>";
} else {
echo " <tr class="lastrow">
<td class="extra"><?php echo $productname; ?></td>
<td class="price1 rates1">$<? echo $price1; ?></td>
<td class="price2 rates2">$<? echo $price2; ?></td>
</tr>";
}
?>
<?php $i++;}?>
</table>

Answer 1

You have several error in code, change it like this, on the top below query
$num=mysql_numrows($result); will be
$num=mysql_num_rows($result);
don't close the connection since you are still performing queries below
//mysql_close(); comment it out and move it to bottom
and here you need this
if (mysql_num_rows($extracharge1) > 0 )
You are comparing string with a resource in your code
note: Don't use mysql_* functions its deprecated, use PDO or mysqli_*