Change :
while ($dataValue = mysqli_fetch_row($result))
echo "<p>".$dataValue[0]."</p>";
To this :
$values = null;
while ($dataValue = mysqli_fetch_assoc($result))
{
$values[] = $dataValue['element_value'];
}
print_r($values);
This will store your values in an array, I've added print_r at the end just so you can see the resulting data structure.
If you want to display them in an array again, you can do this :
foreach ($values as $value)
{
echo "<p>".$value."</p>";
}
I've changed your fetch_row method for fetch_assoc, an explanation can be found here : https://stackoverflow.com/a/9540590/2483649