PHP Exercises: Get the last element for which the given function returns a truth value

Last update on August 19 2022 21:50:37 (UTC/GMT +8 hours)

PHP: Exercise-81 with Solution

Write a PHP program to get the last element for which the given function returns a truth value.

Sample Solution: -

PHP Code:

<?php
function find_Last($items, $func)
{
    $filteredItems = array_filter($items, $func);

    return array_pop($filteredItems);
}

echo find_Last([1, 2, 3, 4], function ($n) {
    return ($n % 2) === 1;
});
echo "\n";
echo find_Last([1, 2, 3, 4], function ($n) {
    return ($n % 2) === 0;
});

?>

Sample Output:

3
4

Flowchart:

PHP Code Editor:

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Previous: Write a PHP program to create a new array with n elements removed from the left.
Next: Write a PHP program to to get the index of the last element for which the given function returns a truth value.

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PHP: Tips of the Day

Mutates the original array to filter out the values specified

Example:

<?php
function tips_pull(&$items, ...$params)
{
  $items = array_values(array_diff($items, $params));
  return $items;
}

$items = ['x', 'y', 'z', 'x', 'y', 'z'];
print_r(tips_pull($items, 'y', 'z'));
?>

Output:

Array
(
    [0] => x
    [1] => x
)