Comparison of float values in PHP

That surprise is not pleasant at all. Especially if you work with money.

<?php
  $a = 0.1 + 0.7;
  $b = 0.8;
  var_dump($a, $b, $a == $b); 

// float(0.8) float(0.8) bool(false) 
?>

To avoid this type of problems let's follow the advice of Richard Johnson, that was published in the April 2013 issue of Web & PHP magazine:
"Be sure you are using ints and working in the smallest non-divisible monetary value (cents or pence). Alternatively make use of the BC or GMP maths functions which can also be useful if you need to do precise decimal operations."

What php.ini file is used by console

If you are not sure about what php.ini file is used by console, you can find out that by some methods. There is one of them. You can do it by parsing information about php, that will be displayed by php -i.

php -i | grep php\.ini

or

find / -name php.ini