อยากทราบการเขียนเงื่อนไขการโชว์รูปภาพบนดาต้าเบสค่ะตามเวลาค่ะ ถ้าเวลาไหนไม่มีให้โชว์ไม่มีข้อมูลค่ะ

<?php
	$host = "localhost";
	$username = "root";
	$password = "123456";
	$db_name="img_name";// name database
	$localimage="img/2015/";
	$radar="UBOL120";
	$bar="_";
	$field_S="name";
	$connect = mysql_connect($host, $username, $password);
	mysql_select_db($db_name,$connect);
    mysql_query("SET NAMES UTF8");
	$str_sql =  "SELECT * FROM pic_detail where date like '%" . $_GET['date']. "%'"; //name table database
    $rs_pic = mysql_query($str_sql,$connect) or die (mysql_error()); // sql
	$num_row=mysql_num_rows($rs_pic);
	$row = mysql_fetch_array($rs_pic);
	$cols = 5; // 5 colum
	$c=$cols ;
	$Y=date("Y");
	$M=date("m");
	$D=date("d");
	$hh = $row['hr'];
	$minn = $row['min'];
	$ubol_radar="$localimage$radar$bar$Y$M$D$Hrr$minn$type"; //ที่เก็บภาพวันที่ปัจจุบัน
	
?>

<table border="1px" cellspacing="15px">
<tr>
<?php
if(!($submit)){
	 if (!($ubol_radar)) {
			?>
<center><font color='#FF0000' face='Verdana, Geneva, sans-serif'><br><br>No data</font></center>
<?php }else{?>
<td align=center width=120 ><a href = "Analysis reflectivity.php?ref=<?php echo ''.$localimage.''.$radar.''.$bar.''.$Y.''.$M.''.$D.''.$Hrr.''.$min.''; ?>" target="_blank">
<img id="large" src ="<?php echo ''.$localimage.''.$radar.''.$bar.''.$year.''.$month.''.$day.''.$hr.''.$min.''.$type.''; ?> " <?php echo 'width=120 height="120"' ?>>  
<font color="#FF0000" face="Verdana, Geneva, sans-serif"><? echo $year.''.$month.''.$day.''.$hr.''.$min.'';?></font></a></td>
<?php
}

}
for ($e =0; $e<=23; $e++) { // ชม
				if($e<10){$Hrr="0$e";}
				else{$Hrr="$e"; }
					$ubol_radarr="$localimage$radar$bar$year$month$day$Hrr$min$type";	//ที่เก็บภาพทั้งหมด	
					if($submit){
					if (($ubol_radarr)) {
				
				while($row_pic=mysql_fetch_array($rs_pic)){
		$c --;	
	$name = $row_pic['name'];
	$radar = $row_pic['radar'];
	$bar = $row_pic['bar'];
	$year = $row_pic['year'];
	$month = $row_pic['month'];
	$day = $row_pic['day'];
	$hr = $row_pic['hr'];
	$min = $row_pic['min'];
	$type = $row_pic['type'];	
	 ?>
<td align=center width=120 ><a href = "Analysis reflectivity.php?ref=<?php echo ''.$localimage.''.$radar.''.$bar.''.$year.''.$month.''.$day.''.$Hrr.''.$min.''; ?>" target="_blank">
<img id="large" src ="<?php echo ''.$localimage.''.$radar.''.$bar.''.$year.''.$month.''.$day.''.$hr.''.$min.''.$type.''; ?> " <?php echo 'width=120 height="120"' ?>>  
<font color="#FF0000" face="Verdana, Geneva, sans-serif"><? echo $year.''.$month.''.$day.''.$hr.''.$min.'';?></font></a></td>
<?
				if($submit){
					if (!($ubol_radarr)) {
						?>
						<td align=center width=120 ><br><br><br> <font color="#FF0000" face="Verdana, Geneva, sans-serif">No data</font><br><br><br> <br>
<font color="#FF0000" face="Verdana, Geneva, sans-serif"><? echo $year.''.$month.''.$day.''.$hr.''.$min.'';?></font></a></td>
	
					<?php
					}}
}// end while
if($c == 0) {
$c = $cols;

}
?>
</tr></tr>
<?
}
}
}
			?>