PHP Array Exercises : Floor decimal numbers with precision

PHP Array: Exercise-18 with Solution

Write a PHP function to floor decimal numbers with precision.

Note: Accept three parameters number, precision, and $separator
Sample Data :
1.155, 2, "."
100.25781, 4, "."
-2.9636, 3, "."

Sample Solution:

PHP Code:

function floorDec($number, $precision, $separator)
$number_part=explode($separator, $number);

$ceil_number= array($number_part[0],$number_part[1]);
return implode($separator,$ceil_number);
print_r(floorDec(1.155, 2, ".")."\n");
print_r(floorDec(100.25781, 4, ".")."\n");
print_r(floorDec(-2.9636, 3, ".")."\n");

Sample Output:



Flowchart: Floor decimal numbers with precision

PHP Code Editor:

Contribute your code and comments through Disqus.

Previous: Write a PHP function that returns the lowest integer that is not 0.
Next: Write a PHP script to print "second" and Red from the specified array.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

Follow us on Facebook and Twitter for latest update.

PHP: Tips of the Day

PHP: Where does PHP store the error log? (php5, apache, fastcgi, cpanel)

PHP stores error logs in /var/log/apache2 if PHP is an apache2 module. Shared hosts are often storing log files in your root directory /log subfolder. But...if you have access to a php.ini file you can do this:

error_log = /var/log/php-scripts.log

According to rinogo's comment: If you're using cPanel, the master log file you're probably looking for is stored (by default) at


If all else fails you can check the location of the log file using

<?php phpinfo(); ?>

Ref : https://bit.ly/2EffgH5


We are closing our Disqus commenting system for some maintenanace issues. You may write to us at reach[at]yahoo[dot]com or visit us at Facebook