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PHP Exercises: Check if two numbers are approximately equal to each other

PHP: Exercise-94 with Solution

Write a PHP program to check if two numbers are approximately equal to each other.

Note: Use abs() to compare the absolute difference of the two values to epsilon. Omit the third parameter, epsilon, to use a default value of 0.001.

Sample Solution: -

PHP Code:

<?php
//Licence: https://bit.ly/2CFA5XY
function approximatelyEqual($number1, $number2, $epsilon = 0.001)
{
    if (abs($number1 - $number2) < $epsilon)
     return 1;
    else
     return 0;
}
print_r(approximatelyEqual(10.0, 10.00001));  
echo("\n");
print_r(approximatelyEqual(10.0, 10.01));

?>

Sample Output: 

1
0

Flowchart:

Flowchart: Check if two numbers are approximately equal to each other.

PHP Code Editor:

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Previous: Write a PHP program to sort a collection of given arrays or objects by key.
Next: Write a PHP program to check if a given string starts with a given substring.

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PHP: Tips of the Day

Returns all elements in an array except for the first one

Example:

<?php
function tips_tail($items)
{
  return count($items) > 1 ? array_slice($items, 1) : $items;
}

print_r(tips_tail([1, 5, 7]));
?>

Output:

Array
(
    [0] => 5
    [1] => 7
)