Código PHP:
<?php
$data_passada=($_GET['data_passada']);
$data_usuari=($_GET['data_usuari']);
//connexio a la BD
$link = mysql_connect("ruta", "user","user");
mysql_select_db("Bd",$link);
//Include codi phplot
include('./phplot.php');
//Definim objecte
$graph = new PHPlot(700,400);
//Definim els Titols
$graph->SetTitle("La Panera del Pa\n\rComparatiu Diari");
$graph->SetXTitle('Tendes');
$graph->SetYTitle('Clients');
$sql="SELECT tendes,fecha,Count(numero) AS clients
FROM tendes,tickets
WHERE id_tenda = tienda AND fecha='".$data_usuari."'
GROUP BY tendes,fecha
ORDER BY id_tenda";
$res=mysql_query($sql);
$sql="SELECT tendes,fecha,Count(numero) AS clients
FROM tendes,tickets
WHERE id_tenda = tienda AND fecha='".$data_passada."'
GROUP BY tendes,fecha
ORDER BY id_tenda";
$res2=mysql_query($sql);
$numeroRegistros=mysql_num_rows($res);
$numeroRegistros2=mysql_num_rows($res2);
if($numeroRegistros<=0)
{
echo "<div align='center'>";
echo "<font face='verdana' size='-2'>No s'han trobat resultats</font>";
echo "</div>";
}
elseif ($numeroRegistros2<=0)
{
$data = array();
while($row = mysql_fetch_row($res))
{
$data[] = array($row[0],$row[2]);
}
}
else
{
$data = array();
while($row = mysql_fetch_row($res))
{
while($row2 = mysql_fetch_row($res2))
if($row2[0]==$row[0])
{
$dato = $row2[2];
break;
}
$data[] = array($row[0],$row[2],$dato);
}
}
$graph->SetDataValues($data);
//Llegenda
$graph->SetLegend("Actual");
$graph->SetLegend("Passat");
$graph->SetLegendPixels(500,25);
//Dibuixem la gràfica
$graph->DrawGraph();
?>
es esta pagina donde intento cambiar el color de fondo