PHP Math Exercises: Round a float away from zero to a specified number of decimal places
PHP math: Exercise-8 with Solution
Write a PHP function to round a float away from zero to a specified number of decimal places.
Sample Data :
(78.78001, 2)
(8.131001, 2)
(0.586001, 4)
(-.125481, 3)
-.125481
Sample Solution:
PHP Code:
<?php
function roundout ($value, $places=0) {
if ($places < 0) { $places = 0; }
$x= pow(10, $places);
return ($value >= 0 ? ceil($value * $x):floor($value * $x)) / $x;
}
echo roundout (78.78001, 2)."\n";
echo roundout (8.131001, 2)."\n";
echo roundout (0.586001, 4)."\n";
echo roundout (-.125481, 3)."\n";
echo roundout (-.125481);
?>
Sample Output:
78.79 8.14 0.5861 -0.126 -1
Flowchart :

PHP Code Editor:
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