Sélection affichage

<?php 
// je récupère la liste des client
	echo "<form method='post' action='page2.php'>\n";
	echo "<center>";
	echo "<table>";
	echo "<tr><td>Client</td>";
	echo "<td>";
	
	//recuperation de la liste des clients
	$query      = "SELECT id_client, nom_client  ";
	$query     .= "FROM   clients ";
	$query     .= ";";
	//echo "<br>query = $query <br>";
	$result = execute_query($query);
	
	//creation select avec liste des clients
	echo "<select id='id_client' name='id_client'>";
	while($row = mysql_fetch_array($result)) {
		$id_client  = $row[0];
		$nom_client = $row[1];
		echo "	<option value='" . $id_client . "'>" . $nom_client . "</option>";
	}//end while
	echo "</select>";
	echo "</td>";
	echo "</tr>";
	echo "</table>";
	echo "</form><br/>\n";
	....
?>

<?php 
//je recupere l id_client sélectionné
	if(isset($_REQUEST["id_client" ])) {$id_client = $_REQUEST["id_client" ];}
	else{$id_client= "";}
?>

<?php
//requete pour avoir les données sur le client
	$query      = "SELECT *";
	$query     .= "FROM   clients";
	$query     .= "WHERE  clients.id_client = clients.id_client";
	$query     .= ";";
	$result = execute_query($query);
	display_table_client_fiche ($result);
?>

//affichga des donnes
function display_table_clients($result) {
	echo "<table border=1>\n";
	//HEADER ROW
	echo "<tr>\n";
        echo "	<th width=200>	Id du client   	</th>\n";
	echo "	<th width=200>	Nom du client   	</th>\n";
       ...
	echo "</tr>\n";
	//DATA ROWS	
	while($row = mysql_fetch_array($result)) {
		echo "<tr>\n";
                        echo "	<td class=\"center\">" . $row[0] . "</td>\n";
			echo "	<td class=\"center\">" . $row[1] . "</td>\n";
                        ...
		echo "</tr>\n";
	}//end while
	echo "</table>\n";
}//end function