today again a bit PHP. A small tip about handling with numbers in PHP. Or more explicit, round off numbers.
PHP comes already with several functions to handle numbers. Four of them are number_format, ceil, floor and round. My personal favorite is number_format. Why?
Because this function does not just round, it is also formatting the number. The syntax is:
Syntax: string <strong>number_format</strong> (float number [, int <code>decimals [, string decimal separator, string thousands separator]])
This function can be called with 2 or 4 parameter, but not with 3. So
number_format (15329.6956, 2, ",", ".");
The output will be: 15.329,70
The next function, resp. functions are ceil and floor. This functions simply round up (ceil) or down (floor). The syntax is float ceil (float $number) reps. float floor (float $number). In both cases will be the number rounded up- or down on the next integer.
Last but not least the round function. It’s the middle way between the last 3 functions. It rounds a floating-point number up or down and you can provide a decimal place. The syntax is:
float <strong>round</strong> ( float <code>$number[, int
<code><code><code>decimals = 0 [, int
round(15.1698, 2) results: 15.17
Please note that you’re working always with the English number format while you’re programming. Decimal places are separated with a dot “.” and the thousands separator (if they have a separator) with a comma “,”.