hphp/system/php/array_map.php

   1 <?hh // partial
   2
   3 function array_map($func, $arr, ...$extra) {
   4   if ($extra) {
   5     return \__SystemLib\array_map($func, $arr, ...$extra);
   6   }
   7
   8   if (!($arr is \HH\KeyedTraversable)) {
   9     return \__SystemLib\array_map($func, $arr);
  10   }
  11
  12   if (is_object($arr)) {
  13     $arr = $arr->toDArray();
  14   }
  15
  16   if ($func === null) {
  17     return $arr;
  18   }
  19
  20   if (!is_callable($func)) {
  21     trigger_error(
  22       'array_map() expects parameter 1 to be a valid callback',
  23       E_USER_WARNING,
  24     );
  25     return null;
  26   }
  27
  28   $res = darray[];
  29   foreach ($arr as $k => $v) {
  30     $res[$k] = $func($v);
  31   }
  32
  33   return $res;
  34 }