How to compare two times ?

Anon

Hi all,

is there a way to compare two times ?
I need an output in one of this formats :
HH:MM (in PHP H:i)
or
MM (in PHP i).

I have to UNIX-timestamps like ... but see the code :

$date = date("m,d,Y");
echo " $date";
$beginn = "09,00";
$bdate = "$beginn,30,$date";
echo " $bdate";
$beginn_timestamp = mktime($bdate);

$ende = "10,45";
$edate = "$ende,00,$date";
echo " $edate";
$ende_timestamp = mktime($edate);
echo " Beginn : $beginn_timestamp Sekunden";
echo " Ende : $ende_timestamp Sekunden";
$datediff = $edate - $bdate;
echo " $datediff";
$gesamt = bcsub($ende_timestamp, $beginn_timestamp ,4);
$gesamtminuten = bcdiv($gesamt,60);
$gesamtstunden = bcdiv($gesamtminuten,60,2);
echo " Gesamtzeit = $gesamt Sekunden";
echo " Gesamtzeit = $gesamtminuten Minuten";
echo " Gesamtzeit = $gesamtstunden Stunden";

I get this output:
07,04,2001
09,00,30,07,04,2001
10,45,00,07,04,2001
Beginn : 994234606 Sekunden
Ende : 994238206 Sekunden
1
Gesamtzeit = 3600.0000 Sekunden
Gesamtzeit = 60 Minuten <= this must be 90
Gesamtzeit = 1.00 Stunden

Can anyone help me !

Thanks Chris