Recuperar parametro salida de un sp con mysqli

[ferminako]

encontre la solucion, espero que a alguien le sirva:

$ivalue=1;
$res = $cn->multi_query( "call I_Familia(@res,'".$this->quitar($nombre)."');SELECT @res" );
if( $res ) {
$results = 0;
do {
if ($result = $cn->store_result()) {
printf( "<b>Result #%u</b>:<br/>", ++$results );
while( $row = $result->fetch_row() ) {
foreach( $row as $cell ) echo $cell, "&nbsp;";
}
$result->close();
if( $cn->more_results() ) echo "<br/>";
}
} while( $cn->next_result() );
}
$cn->close();