Champs date + liste déroulante php

print_r($requete = "SELECT date_sortie FROM servcart WHERE date_sortie BETWEEN '$date_debut' and '$date_fin'");

name="DATE_SORTIE"

<label>Entre : </label>   
      <input type="text" id="datepicker" name="date_debut" value=""/>    
      <label>Et : </label>
      <input type="text" id="datepicker1" name="date_fin"  value=""/>    
      <label></label>

<?php
	   var_dump($_POST);
	  if (isset($_POST['date_debut'])               
		and isset($_POST['date_fin']))
		 {                        
		$date_debut=$_POST['date_debut'];   
		$date_fin=$_POST['date_fin'];						

       $requete3 = "SELECT DATE_FORMAT(date_sortie,'%d/%m/%Y') AS DateTemps FROM servcart WHERE date_sortie BETWEEN '$date_debut' AND '$date_fin' and uf='uf'";
        $req3 = mysql_query($requete3) or die( mysql_error() ) ; 
		 }
		 else{
              echo'<span style="color:red;">quelle merdouille.<br /><br/></span>';
            }		
    ?>      

<?php
//gestion de la ligne selectionnée
   if (isset($_POST['uf']))
        {$uf=$_POST['uf'];
	 }
   else
        {$uf="";}
                	
   if (isset($_POST['service']))
	{$v_service=$_POST['service'];
	 }
   else
	{$v_service="";}					
?>	

      <table width="580" height="209" border="3">  
       <form  name="rechercher" method="post" action="index.php?idpage=3">       
      <tr>
       <td height="35" colspan="5" align="center"  style="font-size:24px" >Statistiques de consommation </td> 
      </tr>    
      
      <tr> 
       <td height="32" colspan="5" align="left">   
        <select  name="service" > 
         <option selected> Choisissez un service</option>
<?php
      $requete = "SELECT distinct service FROM servcart order by service";
      $req     = mysql_query($requete) or die( mysql_error() ) ; 		
		
	 while ($donnees=mysql_fetch_array($req))
	      {			       			     
	        $service = $donnees['service'];
?>
           <!-- affichage de la liste déroulante -->
         <option value="<?php echo $service ?>" <?php if ($service == $v_service) { echo 'Selected' ; } ?> ><?php echo $service?></option>
 <?php
                }
?>
      </select>
       </td> 
      </tr>
      
      <tr>         
       <td height="30" colspan="5" align="center">      
        <label>Entre : </label>   
        <input type="text" id="datepicker" name="date_debut"/>    
        <label>Et : </label>
        <input type="text" id="datepicker1" name="date_fin" />    		       
       </td>
      </tr>
         
      <tr>
       <th height="28" colspan="5" scope="row" align="center">
         <input  type="submit"  value="Rechercher" />  
       </th>
      </tr>
                  
      <tr>    
       <th width="52" height="36" bgcolor="#5ab9d8" scope="col">UF</th>
       <th width="159" bgcolor="#5ab9d8" scope="col">SERVICE</th>
       <th width="191"  bgcolor="#5ab9d8" scope="col">CARTOUCHE</th>
       <th width="77"  bgcolor="#5ab9d8" scope="col">DATE</th>
       <th width="63"  bgcolor="#5ab9d8" scope="col">SORTIE STOCK</th>
      </tr>
   
<?php 	 
    if (isset($_POST['date_debut'])               
	and isset($_POST['date_fin']))
	{                        
	$date_debut=$_POST['date_debut'];   
	$date_fin=$_POST['date_fin'];						    		             
		
       $requete2 = "SELECT uf,service,cartouche,sortie_stock,date_sortie FROM servcart WHERE  date_sortie BETWEEN '$date_debut' and '$date_fin' and uf='$uf' order by date_sortie ";						   
      $req2 = mysql_query($requete2) or die( mysql_error() ) ; 
		
	while ($donnees2=mysql_fetch_array($req2))
	{ 	   
?>
      <tr>
	   <td height="22"><?php echo $donnees2['uf']; ?></td>
	   <td><?php echo $donnees2['service']; ?></td>
	   <td><?php echo $donnees2['cartouche']; ?></td>
       <td><?php echo $donnees2['date_sortie']; ?></td>
	   <td><?php echo $donnees2['sortie_stock']; ?></td>
      </tr>             
<?php           		          
	}
      }
?> 
    </form>          
  </table>

$to_date = explode("/", $date_debut);
$date_debut = $to_date[2]."-".$to_date[1]."-".$to_date[0];
 
$to_date = explode("/", $date_fin);
$date_fin = $to_date[2]."-".$to_date[1]."-".$to_date[0];