I would like to dynamically pass data for bind parameters, depending on user selection.
This code gives me two errors:
Warning: Invalid argument supplied for foreach() Warning: Wrong parameter count for mysqli_stmt::bind_param()
$query="SELECT COUNT(*) FROM database WHERE parameter_zero ='approved'";
if(!empty($_GET['first_parameter'])) {
$queryPart[] = 'first_parameter=?';
$type[]='s';
$value[]=$_GET['first_parameter'];
}
if(!empty($_GET['second_parameter'])) {
$queryPart[] = 'second_parameter=?';
$type[]='s';
$value[]=$_GET['second_parameter'];
}
if(!empty($_GET['third_parameter'])) {
$queryPart[] = 'third_parameter=?';
$type[]='s';
$value[]=$_GET['third_parameter'];
}
$query.= ' AND '.implode(' AND ',$queryPart);
$bind=array_merge($type,$value);
if ($res = $con->prepare($query)) {
call_user_func_array(array($count,'bind_param'),ref($bind));
$res->execute();
$cRes = $res-> $fetch_row();
$count -> close();
} else error($con->error);
echo $cRes;
function ref($arr) {
$refs=array();
foreach($arr as $key => $value) {
$refs[$key] = &$arr[$key];
}
return $refs;
}