<span id="title">Reading</span><br><br>
<?php
$tbl = "el_reading1";
$month = previous_month();//date("M-Y");

$flatnos = $_POST["flatno"];
$readings = $_POST["reading"];
$datereadings = $_POST["datereading"];

if ($_POST["submit"] == 'SAVE') {
	$no = 0;
	if (mysql_num_rows(mysql_query("select * from $tbl where month='$month'"))) {
		foreach ($flatnos as $flatno) {
			if (!$readings[$no]) $readings[$no] = 0; 
			mysql_query("update $tbl set reading=".$readings[$no].", datereading='".$datereadings[$no]."' 
			where month='$month' and flatno='$flatno'");
			$no++;
		}
	} else {
                foreach ($flatnos as $flatno) {
			if (!$readings[$no]) $readings[$no] = 0; 
                        mysql_query("insert into $tbl(flatno,month,reading,datereading,dated) 
			values('$flatno','$month',".$readings[$no].",'".$datereadings[$no]."',now())");
                        $no++;
		}
	}
}

echo "<b>For the month of $month</b>
<table width='100%' border='1' style='border-collapse: collapse'>
<tr><th>No</th><th width='40%'>FlatNo</th><th>Reading</th><th>Dated</th>";

if (mysql_num_rows(mysql_query("select * from $tbl where month='$month'"))) {
	$rs = mysql_query("select * from $tbl where month='$month' order by flatno");
	while ($o = mysql_fetch_object($rs)) {
		$i++;
		echo "<tr><td>$i</td><td>$o->flatno <input type='hidden' name='flatno[]' value='$o->flatno'></td>
		<td><input type='text' name='reading[]' size='10' value='$o->reading'></td>
		<td><input type='text' name='datereading[]' size='15' value='$o->datereading'></td></tr>";
	}
} else {
	$tbl = 'el_flats';
	$dated = date("Y-m-d");
	$rs = mysql_query("select * from $tbl where status='online' order by flatno");
	while ($o = mysql_fetch_object($rs)) {
		$i++;
		echo "<tr><td>$i</td><td>$o->flatno <input type='hidden' name='flatno[]' value='$o->flatno'></td>
		<td><input type='text' name='reading[]' size='10' value=''></td>
		<td><input type='text' name='datereading[]' size='15' value='$dated'></td></tr>";
	}

}
echo "<tr><td align='center' colspan='4'>
<input type='submit' name='submit' value='SAVE'>
</td></table>";
?>