syntax

I am tring to make on htmlwrite(" ");
how to make correct syntax for

 $querycomp = "Select * from customer order by custid ASC";  
   $resultcomp = mysql_query($querycomp);       
      $count=0;
    while($row  = mysql_fetch_array($resultcomp)){
      $count++;
      echo "<option value>".$row['company']."</option>";
      }
            
to put into htmlwrite(" ");

Thank you in advance
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htmlwrite("
      <a href=\"admin.php\">return to overview</a>
    <form name=\"form1\" method=\"post\" action=\"user.php?action=adduserconfirmed\">
    <p>Username: <input name=\"ADD_username\" type=\"text\" id=\"ADD_Username\"><br>
    Password: <input name=\"ADD_password\" type=\"text\" id=\"ADD_password\"><br>
   
      First Name : <input name=\"ADD_fname\" type=\"text\" id=\"ADD_fname\"><br>
    Last Name : <input name=\"ADD_lname\" type=\"text\" id=\"ADD_lname\"><br>

    E-mail : <input name=\"ADD_mailadres\" type=\"text\" id=\"ADD_mailadres\"><br>

    Company : <select name=\"ADD_company\" type=\"text\" id=\"ADD_company\"> ");

   $querycomp = "Select * from customer order by custid ASC";  
   $resultcomp = mysql_query($querycomp);       
      $count=0;
    while($row  = mysql_fetch_array($resultcomp)){
      $count++;
      echo "<option value>".$row['company']."</option>";
      }
                  
htmlwrite("      
      </select><br>
    Phone : <input name=\"ADD_phone\" type=\"text\" id=\"ADD_phone\"><br>
    Userlevel: <input name=\"ADD_Userlevel\" type=\"text\" id=\"ADD_Userlevel\" value=\"1\"><br>
      <input name=\"ADD_activated\" type=\"checkbox\" value=\"1\" checked>Activate on create<br>
      <input name=\"ADD_MailActnum\" type=\"checkbox\" value=\"1\">Mail activationcode mail (only for unactivated accounts).
    <br>
    <input type=\"submit\" value=\"ADD USER\"></p></form>","ADD USER");