Convert a PHP Mongo query with Mongo* classes to MongoDB js query. Currently supports MongoId => ObjectId, MongoDate => ISODate, and MongoRegex => RegExp. [VERY ROUGH] -- Wrote this because I was tired of getting stuck and having to port the query by hand.

MongoQueryStr.php

<?php

class MongoQueryStr {

  protected static $indent = 0;
  
  public static function convert($query) {
    if(!is_array($query)) {
      return false;
    }

    return self::parseRecursive($query);
  }

  protected static function parseRecursive($j) {
    $q = '';
    self::$indent++;

    $first = true;
    foreach($j as $k => $v) {
      $array = is_numeric($k);

      if($first) {
        $first = false;

        if($array)
          $q .= "[\n";
        else
          $q .= "{\n";
      }

      $q .= str_repeat("\t", self::$indent);
      
      if(!$array)
        $q .= "\"$k\": ";

      if(is_array($v)) {
        $q .= self::parseRecursive($v);
      }
      else if(is_object($v)) {
        $q .= self::convertMongoClass($v);
      }
      else if(is_numeric($v)) {
        $q .= (int) $v;
      }
      else if(is_bool($v)) {
        $q .= $v ? "true" : "false";
      }
      else {
        $q .= "\"$v\"";
      }

      $q .= ",\n";
    }

    self::$indent--;
    return trim($q, ",\n")."\n".str_repeat("\t", self::$indent).($array ? "]" : "}");
  }

  protected static function convertMongoClass($instance) {

    if($instance instanceof \MongoId) {
      return 'ObjectId("'.(string)$instance.'")';
    }
    if($instance instanceof \MongoDate) {
      return 'ISODate("'.date('c', $instance->sec).'")';
    }
    if($instance instanceof \MongoRegex) {
      return 'RegExp('.$instance.')';
    }

  }

}