<input name="mo" type="checkbox" value="1">
<input name="di" type="checkbox" value="1">
<input n........

mysq_query = "INSERT INTO events (mo, di, mi..) VALUES ('".$_REQUEST['mo']."',
		'".$_REQUEST['di']."', .....

Mo + Die == ($wochentage & (Mo + Die))

<HR>
<?php

if (isset($_POST['submit']))
{
    echo "das Formular hat folgende Informationen geliefert:";

    print '<pre>';
    var_dump($_POST);
    print '</pre>';

    print 'Mittels FOREACH-Schleife ausgegeben: 
';

    foreach($_POST['cbx'] as $key => $value)
    {
        echo "key = $key  ,value =  $value 
";
    }

    print 'Bitte versuchen Sie es nochmal';

}
else
{

   ?>

   <form action="<?php echo $PHP_SELF; ?>" method="POST">

    cbx: verschiedene Keys, verschiedene Werte 

    : <input type="checkbox" name="cbx[0]" value="Mo">Montag

    : <input type="checkbox" name="cbx[1]" value="Di">Dienstag

    : <input type="checkbox" name="cbx[2]" value="Mi">Mittwoch

    : <input type="checkbox" name="cbx[3]" value="Do">Donnerstag

    : <input type="checkbox" name="cbx[4]" value="Fr">Freitag

    : <input type="checkbox" name="cbx[5]" value="Sa">Samstag

    : <input type="checkbox" name="cbx[6]" value="So">Sonntag

    


    <input type="submit" name="submit" value="absenden">


   </form>

   <?php
}
?>
<HR>

mysq_query=(INSERT into events.... mo, di..) VALUES ('".(isset($_REQUEST['mo']))."','".(isset($_REQUEST['di']))."',...