How to increase by 1 all keys in an array?

Question

What is the simplest solution to increase by 1 all keys in an array?

BEFORE:

$arr[0] = \'a\';
$arr[1] = \'b\';
$arr[2] = \'c\';
         


        

Answer 1

I'm not sure why you'd want to do this, but you should just be able to loop through:

$new_array = array();
foreach($arr as $key => $value){
   $new_array[$key+1] = $value;
}
$arr = $new_array;