Php get duplicate values in multidimensional array
|
I have this issue with multidimensional arrays. Show Given the following multidimensional array: I want to check its values and find duplicates (i.e. keys 0, 2 and 3) leaving just one key - value pair deleting the others, resulting in somthing like this: How can I do that??
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode characters
View Discussion Improve Article Save Article View Discussion Improve Article Save Article To merge the duplicate value in a multidimensional array in PHP, first, create an empty array that will contain the final result. Then we iterate
through each element in the array and check for its duplicity by comparing it with other elements. If duplicity is found then first merge the duplicate elements and then push it to the final array else directly push to the final array. PHP
Output: Array
(
[0] => Array
(
[0] => Array
(
[Roll] => 43
[name] => Geeeks
[subject] => Course-011
)
[1] => Array
(
[Rool] => 43
[name] => Geeks
[subject] => Course-011
)
)
[1] => Array
(
[Rool] => 38
[name] => Gfg
[subject] => Course-012
)
)
Example 2: In this example the duplicate field is more than two. php
Output: Array
(
[Course-011] => Array
(
[0] => Array
(
[Roll] => 43
[name] => Geeks
[subject] => Course-011
)
[1] => Array
(
[Roll] => 38
[name] => GFG
[subject] => Course-011
)
[2] => Array
(
[Roll] => 26
[name] => GeeksforGeeks
[subject] => Course-011
)
)
[Course-012] => Array
(
[0] => Array
(
[Roll] => 31
[name] => gfg
[subject] => Course-012
)
)
)How to get duplicate values multidimensional array PHP?To merge the duplicate value in a multidimensional array in PHP, first, create an empty array that will contain the final result. Then we iterate through each element in the array and check for its duplicity by comparing it with other elements.
How do you get unique values in a multidimensional array?You can use the PHP array unique function along with the other array functions to get unique values from a multidimensional array while preserving the keys.
How to combine two multidimensional array in PHP?The array_merge_recursive() function merges one or more arrays into one array. The difference between this function and the array_merge() function is when two or more array elements have the same key. Instead of override the keys, the array_merge_recursive() function makes the value as an array.
How can I get unique values from two arrays in PHP?The array_diff() (manual) function can be used to find the difference between two arrays: $array1 = array(10, 20, 40, 80); $array2 = array(10, 20, 100, 200); $diff = array_diff($array1, $array2); // $diff = array(40, 80, 100, 200);
|
