Decimals handling in PHP

PHP Round Off Decimal or Convert to Decimal Point
Round Off Decimal
Round a number up or down or Round off a floating decimal point number using PHP’s functions round().
Example. round();

 
 

<?php
echo round(3.4); // 3
echo round(3.5); // 4
echo round(3.6); // 4
echo round(3.6, 0); // 4
echo round(1.95583, 2); // 1.96
echo round(1241757, -3); // 1242000
echo round(5.045, 2); // 5.05
echo [...]

Javascript Decimals and Significant digits

One of the most common tasks is to format a number for currency display- an integer followed by two decimals.
You may be tempted to use number rounding to first shift the number’s decimal places (via multiplication), round it, then shift the decimal back (via division) to pound the number into your hard earned dollar, though [...]