<form method="POST" name="registration" id="registration" 
  action="/registration/">
<table cellpadding="2" cellspacing="2" border="0">
<tr>
  <th>username: </th>
  <td><input type="text" name="data[username]" value="" /></td>
</tr>
<tr>
  <th>e-mail:</th>
  <td><input type="text" name="data[email]" value="" /></td>
</tr>
<tr>
  <th>name: </th>
  <td><input type="text" name="data[full_name]" value="" /></td>
</tr>   
<tr>
  <th>password:</th>
  <td><input> type="password" name="password[1]" /></td>
</tr>   
<tr>
 <th>password:</th>
 <td><input type="password" name="password[2]" /></td>
</tr>
<tr>
  <th>date:</th>
  <td>
    <select name="date[day]" > <option label="01" value="1">01</option>
    <option label="02" value="2">02</option>
    <option label="03" value="3">03</option>
    <option label="04" value="4">04</option>
    <option label="05" value="5">05</option>
    <option label="06" value="6">06</option>
    <option label="07" value="7">07</option>
    <option label="08" value="8">08</option>
    <option label="09" value="9">09</option>
    <option label="10" value="10">10</option>
    <option label="11" value="11">11</option>
    <option label="12" value="12">12</option>
    <option label="13" value="13">13</option>
    <option label="14" value="14">14</option>
    <option label="15" value="15">15</option>
    <option label="16" value="16">16</option>
    <option label="17" value="17">17</option>
    <option label="18" value="18">18</option>
    <option label="19" value="19">19</option>
    <option label="20" value="20">20</option>
    <option label="21" value="21">21</option>
    <option label="22" value="22">22</option>
    <option label="23" value="23">23</option>
    <option label="24" value="24">24</option>
    <option label="25" value="25">25</option>
    <option label="26" value="26">26</option>
    <option label="27" value="27">27</option>
    <option label="28" value="28">28</option>
    <option label="29" value="29">29</option>
    <option label="30" value="30">30</option>
    <option label="31" value="30">31</option>
    </select>
  </td>
</tr>
<tr>
  <th>gender:</th>
  <td>    
  <select name="gender">
    <option value="">-</option>
    <option value="1">male</option>
    <option value="2">female</option>
  </select>
  </td>
</tr>
<tr>
  <td></td>
  <td><input type="hidden" name="type" value="full"/>
      <input type="submit" name="register" value="submit" />
  </td>
</tr>   
</table>
</form>

Nasıl curl ile php bu formu gönderebilirsiniz?