I'm not sure if I didn't submit my last post correctly or if it just didn't make sense do here I go again. Its been 13 hours now that I have been trying and just cant seem to get the script right to write the data from a simple drop down menu to a csv file.

here is my current code. I would love a validation script as well but at this point I'm more concerned about the data transfer. I'm sure this is quite novice to most advanced developers. Thanks for any help you could provide.

Code:
<?php 
if( $fp = fopen('mydata.csv', 'w') ){
fputcsv($fp, print_r($_POST, true));
}
fclose($fp);
?>
 <body bgcolor="#FFFFFF" text="#000033" link="#0066CC">
<form action="Activity.php" enctype="text/plain" method="POST">
<LABEL>SELECT YOUR ACTIVITY:</LABEL>
<select name="Activity" multiple="multiple"size="8.5"> 
style="font-family: calibri"
style="color: #003399"
style="border: outset"
style="font-size: 7"
style="background: white">
  <option value="1">Reactive Phone Call</option>
  <option value="2">Proactive Phone Call</option>
  <option value="3">Reactive Email</option>
  <option value="4">Proactive Email</option>
  <option value="5">Administrative</option>
  <option value="6">Project/BOB Strategy</option>
  <option value="7">Meeting</option>
  <option value="8">Break/Lunch</option>
</select>
<input type="submit" name="Submit" value="Submit" />
</form>