Trying to change just TWO values of array from string to integer (in order to do math on them)
Tried:
echo (float)$final_data[0][0][4] - (float)$final_data[0][0][2];
echo "<br>";
echo (float)($final_data[0][0][4] - $final_data[0][0][2])/$final_data[0][0][2]*100;
Does not work. It still outputs '2' which is the string talking.
Is there a way to do this? I know how to transform ALL of the array into integers but is there an easy way to just do it per element like I'm doing?
Settype sets the data type of variable to specified type. settype($final_data[0][0][4],'int');. If you want to know the data type of a variable than you can use echo gettype($final_data[0][0][4]);. Hope this helps
Yes, you can do it. First of all, you can't cast after the operation so (float)this - (float)this would be closer, but you should use floatval to do the conversion.
echo floatval( $final_data[0][0][4] ) - floatval( $final_data[0][0][2] );
echo "<br>";
echo ( floatval($final_data[0][0][4] ) - floatval( $final_data[0][0][2] ) ) / floatval( $final_data[0][0][2] ) * 100;
$final_data