PHP Exercises: Check a flat list for duplicate values

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 definition for 'has_Duplicates' that takes an array of items as a parameter
function has_Duplicates($items)
{
    // Check if the count of items is greater than the count of unique items
    if (count($items) > count(array_unique($items)))
        // If duplicates are found, return 1 (true)
        return 1;
    else
        // If no duplicates are found, return 0 (false)
        return 0;
}

// Call 'has_Duplicates' with an array containing duplicates and display the result using 'print_r'
print_r(has_Duplicates([1, 2, 3, 4, 5, 5])); 

// Display a newline
echo "\n";

// Call 'has_Duplicates' with an array without duplicates and display the result using 'print_r'
print_r(has_Duplicates([1, 2, 3, 4, 5])); 

?>

Sample Output:

1
0

Flowchart:

PHP Code Editor:

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