Dot path resolver

dot-path-resolver.php

<?php

function convert(&$arr, $path, $value) {
    $keys = explode('.', $path);

    foreach ($keys as $key) {
      if ( ! isset( $arr[$key] ) ) {
        $arr[$key] = [];
      }
      $arr = &$arr[$key];
    }

    $arr = $value;
}
$arr = [
  'entry',
  'somethother'=>'something',
];
convert( $arr, 'somethother.test.2', '11' );

var_dump( $arr );%