再起ってキモいと隣の席の人に言われたので

再起で遊んでみた

<?php
function array_walk_deeply ( $v, $f ) {
  $is_obj = null;
  
  if ( is_object ( $v ) && $v instanceof stdClass ) {
    $is_obj = $v = (array)$v;
  }

  if ( is_array  ( $v ) ) {
    foreach ( $v as $key => $val ) {
      $v[$key] = array_walk_deeply ( $v[$key], $f  );
    }
  }
  elseif ( is_scalar ( $v ) ) {
    $v = $f ( $v );
  }

  if ( $is_obj ) $v = (object)$v;
  return $v;
}

/*
$val1 = array (
  'hoge' => 'fuga',
  'fuga' => 'piyo',
  'outer_array' => array(
    'inner_array' => array(
      'inner_hoge' => 'inner_fuga',
    ),
  ),
  'outer' => (object) array (
    'xyzzy'  => 'emacs like',
    'vim'    => 'vi like',
    'inner' => (object)array (
      'jojo' => 'dio',
      'sasuke' => 'naruto',
    ),
));

$f1 = function ( &$v ) { 
  if ( !is_scalar ( $v ) ) return $v;
  $v = $v . ' after';
  return $v;
};

print 'array_walk_deeply' . "\n";
var_dump ( array_walk_deeply ( $val1 , $f1 ));

array_walk ( $val1, $f1 ) ;
print 'array_walk' . "\n";
var_dump ( $val1 );
*/