<?php
  /**
   * Fetch the entities.json file and convert to PHP datastructure.
   */
  
  // The URL to the official entities JSON file.
  $ENTITIES_URL = 'http://www.w3.org/TR/2012/CR-html5-20121217/entities.json';
  
  $payload = file_get_contents($ENTITIES_URL);
  $json = json_decode($payload);
  
  $table = array();
  foreach ($json as $name => $obj) {
      $sname = substr($name, 1, -1);
      $table[$sname] = $obj->characters;
  }
  
  echo '<?php
  namespace Masterminds\\HTML5;
  /** Entity lookup tables. This class is automatically generated. */
  class Entities {
    public static $byName = ';
  var_export($table);
  echo ';
  }' . PHP_EOL;
  //print serialize($table);