I have an array contacting following words
(“hello”, “apple”, “hello”, “hello”, “apple”, “orange”, “cake”)
Result here should be 5
Can you please tell me if there is a library function in PHP that I can use to count how many duplicate words are present in my array? Any help would be greatly appreciated.
You can combine array_unique() with count():
$number_of_duplicates = count($words) - count(array_unique($words));
Note: PHP has over a hundred Array Functions. Learning them will make you a better PHP Developer.
Check array_count_values https://www.php.net/manual/en/function.array-count-values.php
<?php
var_dump(array_count_values($words));
Output:
Array(
[hello] => 3,
[apple] => 2,
[orange] => 1,
[cake] => 1
)
$array = array(“hello”, “apple”, “hello”, “hello”, “apple”, “orange”, “cake”);
$unique_elements = array_unique($array);
$totalUniqueElements = count($unique_elements);
echo $totalUniqueElements;
//Output 5
Hope this will help you.
Try like this
$count1 = count($array);
$count2 = count(array_unique($array));
echo $count1 - $count2;
You could do this:
$org = count($array);
$unique = count(array_unique($array));
$duplicates = $org - $unique
