//Benutzerangaben z. B. via Formular
$max_HW=7.27;
$min_LW=0.2;
//$HW_event_user=01.01.2014 10:42
$HW_event_user_timestamp=gmmktime(23,07,00,01,01,14);
//Aus der Monddatenbank entsprechend des eingegebenen Hochwasserdatums die Periodizität berechnen im Bsp 14.73472 Tage = 1273080 s
$extreme_period_sec=1273080;
$extreme_period_days=$extreme_period_sec/(60*60*24);
//letztes Extremereignis aus der Datenbank auslesen
$last_extreme_event_timestamp=gmmktime(11,14,00,01,01,14);
$pi=3.1415927;
$two_pi=2*$pi;
$delta_seconds=$HW_event_user_timestamp-$last_extreme_event_timestamp;
$delta_days=$delta_seconds/(60*60*24);
$HW_event[]=$HW_event_user_timestamp;
$LW_event[]=$HW_event_user_timestamp+22350;
$HW_delta_days[]=0;
$i=0;
//HW_events, Extremheitsfaktor und Wasserhöhen berechnen
while($i<7)
{
$HW_event[]=$HW_event[$i]+44700;
$HW_delta_days[]=$HW_delta_value=($HW_event[$i]-$last_extreme_event_timestamp)/(60*60*24);
$Extreme_factor_HW[]=$Extreme_value_HW=0.44*COS($two_pi/$extreme_period_days*$HW_delta_value)+1;
$HW_value[]=$max_HW*$Extreme_value_HW/1.44;
$i++;
}
 
$i=0;
while($i<7)
{
$LW_event[]=$LW_event[$i]+44700;
$LW_delta_days[]=$LW_delta_value=($LW_event[$i]-$last_extreme_event_timestamp)/(60*60*24);
$Extreme_factor_LW[]=$Extreme_value_LW=0.44*COS($two_pi/$extreme_period_days*$LW_delta_value)+1;
$LW_value[]=$min_LW*1.44/$Extreme_value_LW;
$i++;
}
 
$i=0; while($i<7) { echo "
"; $i++; } echo "
<table border='1'>
<tbody>
<tr>
<td>HW</td>
<td>Wasserstand</td>
<td>NW</td>
<td>Wasserstand</td>
</tr>
<tr>
<td>".$HW_event_formated = gmdate("d.m.Y H:i",$HW_event[$i])."</td>
<td>".number_format($HW_value[$i], 2)."</td>
<td>".$LW_event_formated = gmdate("d.m.Y H:i",$LW_event[$i])."</td>
<td>".number_format($LW_value[$i], 2)."</td>
</tr>
</tbody>
</table>