How to create custom rounding in php?

@addison 

To create custom rounding in PHP, you can use the following steps:

Step 1: Define a function that performs custom rounding based on your requirements. This function should take two parameters: the number to be rounded and the precision (number of decimal places).

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function customRound($number, $precision) {
  $multiplier = pow(10, $precision);
  return round($number * $multiplier) / $multiplier;
}

Step 2: Use the customRound() function to round a number to the desired precision.

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$number = 4.56789;
$precision = 2;
$roundedNumber = customRound($number, $precision);

echo $roundedNumber; // Output: 4.57

In the above example, the customRound() function first multiplies the original number by 10 raised to the power of the desired precision, which effectively moves the decimal point to the right. It then uses the built-in round() function to perform the rounding. Finally, it divides the result by the same multiplier to move the decimal point back to the correct position.