3v4l.org

run code in 300+ PHP versions simultaneously

sponsor
bughunt
search
recent
about

@ 2019-01-03T08:29:14Z

<?php

$array = array("a1" => 0, "a2" => 2, "a3" => 1, "b1" => 2, "b2" => 3);

$final_array=[];
foreach($array as $key=>$value){
     $final_array[$key[0]] =  (isset($final_array[$key[0]])) ? $final_array[$key[0]]+$value : $value;
 }
 print_r($final_array);

Output
Performance
VLD
References
Branches

print_r: documentation ( source)

preferences:dark modelive previewkey bindings

42.87 ms | 1809 KiB | 5 Q