count the displayed data - php

Question

I have a page that display the logs of student according to date, year, section and IN/OUT. My question, how to count the number of student who displayed by filtering.
screenshot:http://oi60.tinypic.com/2a5ejgg.jpg
This is the code.
//SET UP SQL STATEMENT
$WHERE='';
if ($year<>'0')
{
$WHERE = " student.year = $year ";
}
if ($section<>'0')
{
if ($WHERE=='')
{
$WHERE = " student.section = '" . $section . "'";
}
else
{
$WHERE = $WHERE . "and student.section = '" . $section . "'";
}
}
//SET UP SQL STATEMENT
if ($in_out<>'0')
{
if ($WHERE=='')
{
$WHERE = " `log`.status_log = '" . $in_out . "'";
}
else
{
$WHERE = $WHERE . "and `log`.status_log = '" . $in_out . "'";
}
}
//SET UP SQL STATEMENT
if ($datefilter<>'')
{
if ($WHERE=='')
{
$WHERE = " `log`.date_log = '" . $datefilter . "'";
}
else
{
$WHERE = $WHERE . "and `log`.date_log = '" . $datefilter . "'";
}
}
$start = ($page-1)*$per_page;
if ($WHERE=='')
{
//SET UP SQL STATEMENT
$sql = "SELECT `log`.id, (student.id) as ids, student.name,
student.`year`, student.section, `log`.date_log,
`log`.time_log, `log`.ampm, `log`.status_log,
section.sec_name
FROM `log`
Inner Join student ON student.cardcode = `log`.stud_id
Inner Join section ON section.id = student.section
order by `log`.id DESC
limit $start,$per_page";
}
else
{//SET UP SQL STATEMENT SELECT COUNT(*) AS totalin FROM log WHERE status_log='in'
$sql = "SELECT `log`.id, (student.id) as ids, student.name,
student.`year`, student.section, `log`.date_log,
`log`.time_log, `log`.ampm, `log`.status_log,
section.sec_name
FROM `log`
Inner Join student ON student.cardcode = `log`.stud_id
Inner Join section ON section.id = student.section
WHERE $WHERE
order by `log`.id DESC
limit $start,$per_page";
}
//EXECUTE SQL STATEMENT
$result = mysql_query($sql);
//OOP ALL QUERY DATA ON LOAD AS LIST
while($row = mysql_fetch_array($result))
{
echo '<tr style="font-size: 12px;" class="record">';
echo '<td ><a style="text-decoration:none; color:#4F6B72" href="studentlog.php?id='.$row['ids'].'"</a>' .$row['name']. '</td>';
if ($row['year']=='1')
{ echo '<td> 1st</td>';}
else if ($row['year']=='2')
{ echo '<td> 2nd</td>';}
else if ($row['year']=='3')
{ echo '<td> 3rd</td>';}
else if ($row['year']=='4')
{ echo '<td> 4th</td>';}
echo '<td >'. $row['sec_name']. '</td>';
echo '<td >'. $row['status_log'] .'</td>';
echo '<td>'.$row['date_log'].'</td>';
echo '<td>'.$row['time_log'] . ' ' . $row['ampm'] .'</td>';
}

Answer 1

Once you have executed the query you can us mysql_num_rows() which tells you the actual number of row return by the query
So
//EXECUTE SQL STATEMENT
$result = mysql_query($sql);
$rows_returned = mysql_num_rows($result);
As it seems obvious you are just learning PHP and MYSQL can I suggest that you do not use the mysql_ extension!
Instead learn mysqli_ or PDO see this document for why