What am I doing wrong?

PHP Code:
<?php
    
if( $fp fopen('data.csv''w') ){
    
fputcsv($fpprint_r($_POSTtrue));
}
fclose($fp);
?>
HTML Code:
<body bgcolor="#FFFFFF" text="#000033">
<form>
<form action="Activity.php" method="POST">
<LABEL>SELECT YOUR ACTIVITY:</LABEL>
<select name="Activity" 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>