php type conversion

Using type conversion, you can convert the value of a variable to another type. This conversion is the same as the type conversion in C language. Just insert the temporary data type you want to convert in parentheses before the variable you want to type convert.
For example:

$totalqty = 0;
$totalamount = (float)$totalqty;
?>

The second line of code means "take out the variable value stored in $totalqty, interpret it as a floating point type, and save it in $totalamount". The $totalamount variable will become a floating point type. The converted variable does not change its type, so $totalqty is still an integer type.

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