PHP Exercises: Check a flat list for duplicate values

Last update on August 19 2022 21:50:30 (UTC/GMT +8 hours)

PHP: Exercise-84 with Solution

Write a PHP program to check a flat list for duplicate values. Returns true if duplicate values exists and false if values are all unique.

Sample Solution: -

PHP Code:

<?php
function has_Duplicates($items)
{
    if (count($items) > count(array_unique($items)))
      return 1;
    else
      return 0;
}
print_r(has_Duplicates([1, 2, 3, 4, 5, 5])); 
echo "\n";
print_r(has_Duplicates([1, 2, 3, 4, 5])); 

?>

Sample Output:

1
0

Flowchart:

PHP Code Editor:

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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
)