separation of month and year from database by using php - php

Question

I was trying to get month and year from database when I click on the specific month from select option it should display month and as well as year, the result should fetch from database.
below is my code
<?php
$mon_arr=array("Jan"=>"01","Feb"=>"02","Mar"=>"03","Apr"=>"04","May"=>"05","Jun"=>"06","Jul"=>"07","Aug"=>"08","Sep"=>"09","Oct"=>"10","Nov"=>"11","Dec"=>"12");
?>
<select name="month" id="monthr">
<?php foreach($mon_arr as $x=>$xval){ ?>
<option value="<?php echo $xval; ?>" <?php if($m == $xval) echo "selected=selected"; ?>><?php echo $x; ?></option>
<?php } ?>
</select>
<?php //echo $xval; ?>
<?php //echo $m; ?>
<?php //echo $x; ?>
<select name="year" id="yearr">
<?php for($yi=2014;$yi<=2025;$yi++){ ?>
<option value="<?php echo $yi; ?>" <?php if($y == $yi) echo "selected=selected"; ?>><?php echo $yi; ?></option>
<?php } ?>
</select>
</div>
<table class="table">
<thead>
<tr>
<th>#</th>
<th>Description</th>
<th>File</th>
<th>Submitted By</th>
<th>Date</th>
<th></th>
</tr>
</thead>
<tbody>
<?php $sel_month=mysql_query("SELECT * FROM ".TABLE_MONTHLY." WHERE pid='".$_GET['pid']."' ORDER BY m_date DESC ");
$f=new all_calls();
while($res_month=mysql_fetch_array($sel_month))
{
?>
<tr>
<td></td>
<td><?php echo $res_month['m_desc']; ?></td>
<td><?php $pathsi=explode(',',$res_month['m_file']);
for($ji=1;$ji<count($pathsi);$ji++) {
?>
Download<br />
<?php
}
?></td>
<td><?php echo $f->get_username($res_month['m_by']); ?></td>
<td><?php echo $res_month['m_date']; ?></td>
<td><i class="fa fa-pencil"></i></td>
</tr>
<?php } ?>
</tbody>
</table>
<?php
class monthly_report{
function validate_and_insert($data,$mid,$mfile)
{
//var_dump($mid); die;
if(empty($data['mdesc'])) $err='Description Required';
if(empty($err))
{
//echo 'hello'; die;
//var_dump($mid); die;
if(strlen($mid)==0)
{
$insert=mysql_query("INSERT INTO ".TABLE_MONTHLY." SET pid='".$_POST['hide_pid']."', m_desc='".$data['mdesc']."', m_file='".$mfile."', m_by='".$_SESSION['ID']."', m_date=CURDATE()");
if($insert)
{
return 0;
}
}
else
{
$a=new all_calls();
$paths=$a->get_monthly_file($mid);
if(strlen($mfile)==0)
{
$newfile=$paths;
}
else
{
$newfile=$paths.','.$mfile;
}
//var_dump($mid);die;
$update=mysql_query("UPDATE ".TABLE_MONTHLY." SET m_desc='".$data['mdesc']."', m_file='".$newfile."' WHERE mid='".$mid."' ");
if($update)
{
return 0;
}
}
}
}
}
?>
Can anyone help me out with this issue.