I have this array:
Array (
[061716v] => 1
[061610A] => 1
[062433AP] => 1
[063868M] => 2
[059173V] => 3
[061579A] => 3
[062404AP] => 3
[059179V] => 4
[061582A] => 4
[061697V] => 4
[062407AP] => 4
)
How can i get this:
Array (
[1] => 061716v,061610A,062433AP
[2] => 063868M
[3] => 059173V,061579A,062404AP
[4] => 059179V,061582A,061697V,062407AP
)
In PHP single foreach()
will do the job:-
$final_array = [];
foreach($initial_array as $key=>$val){
$final_array[$val] = isset($final_array[$val]) ? $final_array[$val].','.$key : $key;
}
print_r($final_array);
Output:-https://3v4l.org/lSKE2