/PHP/Php get keys of duplicate values in array

Php get keys of duplicate values in array

<?php
/** 
	Examples of these functions:
	array_unique, 
    array_diff_assoc, 
    array_diff, 
    array_keys, 
    array_intersect 
    
    Examle with an array: 
*/
$array = array('a', 'a', 'b', 'c', 'd');

// Unique values
$unique = array_unique($array);

// Duplicates
$duplicates = array_diff_assoc($array, $unique);

// Unique values
$result = array_diff($unique, $duplicates);

// Get the unique keys
$unique_keys = array_keys($result);

// Get duplicate keys
$duplicate_keys = array_keys(array_intersect($array, $duplicates));

Source: stackoverflow.com

Similar codes

-1 vote189 views1 answer
Codeigniter get num_rows
PHP CodeIgniter
0 vote156 views1 answer
Csv file import to mysqli using php
PHP
34 votes161 views6 answers
Php random number generator
PHP
5 votes179 views2 answers
Laravel collection chunk
PHP Laravel
1 vote175 views1 answer
Laravel routing controller get and post method
PHP Laravel
0 vote197 views1 answer
Check for headers laravel
PHP
13 votes167 views4 answers
Laravel migration remove column
PHP
1 vote152 views1 answer
Php get all saturdays in a month
PHP
0 vote201 views1 answer
Symfony functional test clear session and cookies
PHP Symfony
6 votes171 views6 answers
Composer memory limit
PHP