php实现的mongodb操作类实例

本文实例讲述了php实现的mongodb操作类。分享给大家供大家参考。具体如下：

				?

									<?php 

									/*

									 * To change this template, choose Tools | Templates

									 * and open the template in the editor.

									 */

									class mongo_db { 

									  private $config; 

									  private $connection; 

									  private $db; 

									  private $connection_string; 

									  private $host; 

									  private $port; 

									  private $user; 

									  private $pass; 

									  private $dbname; 

									  private $persist; 

									  private $persist_key; 

									  private $selects = array(); 

									  private $wheres = array(); 

									  private $sorts = array(); 

									  private $limit = 999999; 

									  private $offset = 0; 

									  private $timeout = 200; 

									  private $key = 0; 

									  /**

									  *

									  * CONSTRUCTOR *

									  *

									  * Automatically check if the Mongo PECL extension has been

									  installed/enabled.

									  * Generate the connection string and establish a connection

									  to the MongoDB.

									  */

									  public function __construct() { 

									    if((IS_NOSQL != 1)){ 

									      return; 

									    } 

									    if (!class_exists('Mongo')) { 

									      //$this->error("The MongoDB PECL extension has not been installed or enabled", 500); 

									    } 

									    $configs =wxcity_base::load_config("cache","mongo_db"); 

									    $num = count($configs['connect']); 

									    $this->timeout = trim($configs['timeout']); 

									    $keys = wxcity_base::load_config('double'); 

									    $this->key = $keys['mongo_db']; 

									    $this->config = $configs['connect'][$this->key]; 

									    $status = $this->connect(); 

									    if($status == false) 

									    { 

									      for($i = 1; $i < $num; $i++) 

									      { 

									        $n = $this->key + $i; 

									        $key = $n >= $num ? $n - $num : $n; 

									        $this->config = $configs['connect'][$key]; 

									        $status = $this->connect(); 

									        if($status!=false) 

									        { 

									          $keys['mongo_db'] = $key ; 

									          $this->key = $key; 

									          $data = "<?php\nreturn ".var_export($keys, true).";\n?>"; 

									          file_put_contents(WHTY_PATH.'configs/double.php', $data, LOCK_EX); 

									          break; 

									        } 

									      } 

									    } 

									    if($status==false) 

									    { 

									      die('mongoDB not connect'); 

									    } 

									  } 

									  function __destruct() { 

									    if((IS_NOSQL != 1)){ 

									      return; 

									    } 

									    if($this->connection) 

									    { 

									      $this->connection->close(); 

									    } 

									  } 

									    /**

									 *

									 * CONNECT TO MONGODB  *

									 *

									 * Establish a connection to MongoDB using

									 the connection string generated in

									 * the connection_string() method.

									 If 'mongo_persist_key' was set to true in the  

									 * config file, establish a persistent connection.

									 We allow for only the 'persist'

									 * option to be set because we want to 

									 establish a connection immediately.

									 */

									  private function connect() { 

									    $this->connection_string(); 

									    $options = array('connect'=>true,'timeout'=>$this->timeout); 

									    try { 

									      $this->connection = new Mongo($this->connection_string, $options); 

									      $this->db = $this->connection->{$this->dbname}; 

									      return($this); 

									    } catch (MongoConnectionException $e) { 

									      return false; 

									    } 

									  } 

									  /**

									  *

									  * BUILD CONNECTION STRING *

									  *

									  * Build the connection string from the config file.

									  */

									  private function connection_string() { 

									    $this->host = trim($this->config['hostname']); 

									    $this->port = trim($this->config['port']); 

									    $this->user = trim($this->config['username']); 

									    $this->pass = trim($this->config['password']); 

									    $this->dbname = trim($this->config['database']); 

									    $this->persist = trim($this->config['autoconnect']); 

									    $this->persist_key = trim($this->config['mongo_persist_key']); 

									    $connection_string = "mongodb://"; 

									    if (emptyempty($this->host)) { 

									      $this->error("The Host must be set to connect to MongoDB", 500); 

									    } if (emptyempty($this->dbname)) { 

									      $this->error("The Database must be set to connect to MongoDB", 500); 

									    } if (!emptyempty($this->user) && !emptyempty($this->pass)) { 

									      $connection_string .= "{$this->user}:{$this->pass}@"; 

									    } if (isset($this->port) && !emptyempty($this->port)) { 

									      $connection_string .= "{$this->host}:{$this->port}"; 

									    } else { 

									      $connection_string .= "{$this->host}"; 

									    } $this->connection_string = trim($connection_string); 

									  } 

									  /**

									  *

									  * Switch_db  *

									  *

									  * Switch from default database to a different db

									  */

									  public function switch_db($database = '') { 

									    if (emptyempty($database)) { 

									      $this->error("To switch MongoDB databases, a new database name must be specified", 500); 

									    } $this->dbname = $database; 

									    try { 

									      $this->db = $this->connection->{$this->dbname}; 

									      return(TRUE); 

									    } catch (Exception $e) { 

									      $this->error("Unable to switch Mongo Databases: {$e->getMessage()}", 500); 

									    } 

									  } 

									  /**

									  *

									  * SELECT FIELDS  *

									  *

									  * Determine which fields to include OR which to

									  exclude during the query process.

									  * Currently, including and excluding at 

									  the same time is not available, so the

									  * $includes array will take precedence over

									  the $excludes array.

									  If you want to

									  * only choose fields to exclude,

									  leave $includes an empty array().

									  *

									  * @usage: $this->mongo_db->select(array('foo', 'bar'))->get('foobar');

									  */

									  public function select($includes = array(), $excludes = array()) { 

									    if (!is_array($includes)) { 

									      $includes = array(); 

									    } 

									    if (!is_array($excludes)) { 

									      $excludes = array(); 

									    } 

									    if (!emptyempty($includes)) { 

									      foreach ($includes as $col) { 

									        $this->selects[$col] = 1; 

									      } 

									    } else { 

									      foreach ($excludes as $col) { 

									        $this->selects[$col] = 0; 

									      } 

									    } return($this); 

									  } 

									  /**

									  *

									  * WHERE PARAMETERS   *

									  *

									  * Get the documents based on these

									  search parameters. The $wheres array should

									  * be an associative array with the field 

									  as the key and the value as the search

									  * criteria.  *

									  * @usage = $this->mongo_db->where(array('foo' => 'bar'))->get('foobar');

									  */

									  public function where($wheres = array()) { 

									    foreach ((array)$wheres as $wh => $val) { 

									      $this->wheres[$wh] = $val; 

									    } return($this); 

									  } 

									  /**

									  *

									  * WHERE_IN PARAMETERS *

									  *

									  * Get the documents where the value 

									  of a $field is in a given $in array().

									  *

									  * @usage = $this->mongo_db->where_in('foo', array('bar', 'zoo', 'blah'))->get('foobar');

									  */

									  public function where_in($field = "", $in = array()) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$in'] = $in; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE_NOT_IN PARAMETERS *

									  *

									  * Get the documents where the value of 

									  a $field is not in a given $in array().

									  *

									  * @usage = $this->mongo_db->where_not_in('foo', array('bar', 'zoo', 'blah'))->get('foobar');

									  */

									  public function where_not_in($field = "", $in = array()) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$nin'] = $in; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE GREATER THAN PARAMETERS  *

									  *

									  * Get the documents where the value of 

									  a $field is greater than $x

									  * 

									  * @usage = $this->mongo_db->where_gt('foo', 20);

									  */

									  public function where_gt($field = "", $x) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$gt'] = $x; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE GREATER THAN OR EQUAL TO PARAMETERS  *

									  *

									  * Get the documents where the value of a $field is greater than or equal to $x

									  *

									  * @usage = $this->mongo_db->where_gte('foo', 20);

									  */

									  public function where_gte($field = "", $x) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$gte'] = $x; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE LESS THAN PARAMETERS  *

									  *

									  * Get the documents where the value of

									  a $field is less than $x

									  *

									  * @usage = $this->mongo_db->where_lt('foo', 20);

									  */

									  public function where_lt($field = "", $x) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$lt'] = $x; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE LESS THAN OR EQUAL TO PARAMETERS  *

									  *

									  * Get the documents where the value of 

									  a $field is less than or equal to $x

									  *

									  * @usage = $this->mongo_db->where_lte('foo', 20);

									  */

									  public function where_lte($field = "", $x) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$lte'] = $x; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE BETWEEN PARAMETERS   *

									  *

									  * Get the documents where the value of

									  a $field is between $x and $y

									  *

									  * @usage = $this->mongo_db->where_between('foo', 20, 30);

									  */

									  public function where_between($field = "", $x, $y) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$gte'] = $x; 

									    $this->wheres[$field]['$lte'] = $y; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE BETWEEN AND NOT EQUAL TO PARAMETERS  *

									  *

									  * Get the documents where the value of 

									  a $field is between but not equal to $x and $y

									  *

									  * @usage = $this->mongo_db->where_between_ne('foo', 20, 30);

									  */

									  public function where_between_ne($field = "", $x, $y) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$gt'] = $x; 

									    $this->wheres[$field]['$lt'] = $y; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE NOT EQUAL TO PARAMETERS  *

									  *

									  * Get the documents where the value of 

									  a $field is not equal to $x

									  *

									  * @usage = $this->mongo_db->where_between('foo', 20, 30);

									  */

									  public function where_ne($field = "", $x) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$ne'] = $x; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE OR   *

									  *

									  * Get the documents where the value of 

									  a $field is in one or more values  

									  *

									  * @usage = $this->mongo_db->where_or('foo', array( 'foo', 'bar', 'blegh' );

									  */

									  public function where_or($field = "", $values) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$or'] = $values; 

									    return($this); 

									  } 

									  /**

									  *

									  * WHERE AND  *

									  *

									  * Get the documents where the elements match 

									  the specified values *

									  * @usage = $this->mongo_db->where_and( array ( 'foo' => 1, 'b' => 'someexample' );

									  */

									  public function where_and($elements_values = array()) { 

									    foreach ((array)$elements_values as $element => $val) { 

									      $this->wheres[$element] = $val; 

									    } return($this); 

									  } 

									  /**

									  *

									  * WHERE MOD  *

									  *

									  * Get the documents where $field % $mod = $result *

									  * @usage = $this->mongo_db->where_mod( 'foo', 10, 1 );

									  */

									  public function where_mod($field, $num, $result) { 

									    $this->where_init($field); 

									    $this->wheres[$field]['$mod'] = array($num, $result); 

									    return($this); 

									  } 

									  /**   *    *  Where size *    *  *  Get the documents where the size of a field is in a given $size int *  *  @usage : $this->mongo_db->where_size('foo', 1)->get('foobar'); */

									  public function where_size($field = "", $size = "") { 

									    $this->_where_init($field); 

									    $this->wheres[$field]['$size'] = $size; 

									    return ($this); 

									  } 

									  /**

									  *

									  * LIKE PARAMETERS *

									  *

									  * Get the documents where the (string) value of 

									  a $field is like a value. The defaults

									  * allow for a case-insensitive search.   *

									  * @param $flags  

									  * Allows for the typical regular expression flags:

									  *   i = case insensitive

									  *   m = multiline

									  *   x = can contain comments

									  *   l = locale  

									  *   s = dotall, "." matches everything, including newlines

									  *   u = match unicode

									  *

									  * @param $enable_start_wildcard

									  * If set to anything other than TRUE, a starting line character "^" will be prepended

									  * to the search value, representing only searching for a value at the start of

									  * a new line.

									  *  * @param $enable_end_wildcard 

									  * If set to anything other than TRUE, an ending line character "$" will be appended

									  * to the search value, representing only searching for a value at the end of

									  * a line.

									  * 

									  * @usage = $this->mongo_db->like('foo', 'bar', 'im', FALSE, TRUE);

									  */

									  public function like($field = "", $value = "", $flags = "i", $enable_start_wildcard = TRUE, $enable_end_wildcard = TRUE) { 

									    $field = (string) trim($field); 

									    $this->where_init($field); 

									    $value = (string) trim($value); 

									    $value = quotemeta($value); 

									    if ($enable_start_wildcard !== TRUE) { 

									      $value = "^" . $value; 

									    } if ($enable_end_wildcard !== TRUE) { 

									      $value .= "$"; 

									    } $regex = "/$value/$flags"; 

									    $this->wheres[$field] = new MongoRegex($regex); 

									    return($this); 

									  } 

									  public function wheres($where){ 

									    $this->wheres = $where; 

									  } 

									  /**

									  *

									  * ORDER BY PARAMETERS *

									  *

									  * Sort the documents based on the parameters passed.

									  To set values to descending order,

									  * you must pass values of either -1, FALSE,

									  'desc', or 'DESC', else they will be

									  * set to 1 (ASC).

									  *

									  * @usage = $this->mongo_db->where_between('foo', 20, 30);

									  */

									  public function order_by($fields = array()) { 

									    if (!is_array($fields) || !count($fields)) return ; 

									    foreach ($fields as $col => $val) { 

									      if ($val == -1 || $val === FALSE || strtolower($val) == 'desc') { 

									        $this->sorts[$col] = -1; 

									      } else { 

									        $this->sorts[$col] = 1; 

									      } 

									    } return($this); 

									  } 

									  /**

									  *

									  * LIMIT DOCUMENTS *

									  *

									  * Limit the result set to $x number of documents  *

									  * @usage = $this->mongo_db->limit($x);

									  */

									  public function limit($x = 99999) { 

									    if ($x !== NULL && is_numeric($x) && $x >= 1) { 

									      $this->limit = (int) $x; 

									    } return($this); 

									  } 

									  /**

									  *

									  * OFFSET DOCUMENTS   *

									  *

									  * Offset the result set to skip $x number of documents

									  *

									  * @usage = $this->mongo_db->offset($x);

									  */

									  public function offset($x = 0) { 

									    if ($x !== NULL && is_numeric($x) && $x >= 1) { 

									      $this->offset = (int) $x; 

									    } return($this); 

									  } 

									  /**

									  *

									  * GET_WHERE  *

									  *  

									  * Get the documents based upon the passed parameters  *

									  * @usage = $this->mongo_db->get_where('foo', array('bar' => 'something'));

									  */

									  public function get_where($collection = "", $where = array(), $limit = 99999, $orderby=array()) { 

									    if (is_array($orderby) || !emptyempty($orderby)) { 

									      $order_by = $this->order_by($order_by); 

									    } 

									    return($this->where($where)->limit($limit)->get($collection)); 

									  } 

									  public function selectA($collection = "", $limit = 99999, $orderby=array()) { 

									    if(intval($limit)<1){ 

									      $limit = 999999; 

									    } 

									    $order_by = $this->order_by($orderby); 

									    $re = $this->limit($limit)->get($collection); 

									    $this->clear(); 

									    return (array)$re; 

									  } 

									  public function listinfo($collection = "", $orderby=array(), $page=1, $pagesize=12) { 

									    $page = max(intval($page), 1); 

									    $offset = $pagesize * ($page - 1); 

									    $pagesizes = $offset + $pagesize; 

									    $this->offset($offset); 

									    $order_by = $this->order_by($orderby); 

									    $re = $this->limit($pagesize)->get($collection); 

									    $this->limit(999999); 

									    $count = $this->count($collection); 

									    $this->pages = pages($count, $page, $pagesize); 

									    return (array)$re; 

									  } 

									  /**

									  *

									  * GET *

									  *

									  * Get the documents based upon the passed parameters  *

									  * @usage = $this->mongo_db->get('foo', array('bar' => 'something'));

									  */

									  public function get($collection = "") { 

									    if (emptyempty($collection)) { 

									      $this->error("In order to retreive documents from MongoDB, a collection name must be passed", 500); 

									    } $results = array(); 

									    $documents = $this->db->{$collection}->find($this->wheres, $this->selects)->limit((int) $this->limit)->skip((int) $this->offset)->sort($this->sorts); 

									    $returns = array(); 

									    foreach ($documents as $doc): $returns[] = $doc; 

									    endforeach; 

									    return($returns); 

									  } 

									  public function getMy($collection = "") { 

									    if (emptyempty($collection)) { 

									      $this->error("In order to retreive documents from MongoDB, a collection name must be passed", 500); 

									    } $results = array(); 

									    $documents = $this->db->{$collection}->find($this->wheres, $this->selects)->limit((int) $this->limit)->skip((int) $this->offset)->sort($this->sorts); 

									    $returns = array(); 

									    foreach ($documents as $doc): $returns[] = $doc; 

									    endforeach; 

									    $this -> clear(); 

									    return($returns); 

									  } 

									  /**

									  *

									  * COUNT  *

									  *

									  * Count the documents based upon the passed parameters *

									  * @usage = $this->mongo_db->get('foo');

									  */

									  public function count($collection = "") { 

									    if (emptyempty($collection)) { 

									      $this->error("In order to retreive a count of documents from MongoDB, a collection name must be passed", 500); 

									    } $count = $this->db->{$collection}->find($this->wheres)->limit((int) $this->limit)->skip((int) $this->offset)->count(); 

									    $this->clear(); 

									    return($count); 

									  } 

									  /**

									  *

									  * INSERT  *

									  *

									  * Insert a new document into the passed collection *

									  * @usage = $this->mongo_db->insert('foo', $data = array());

									  */

									  public function insert($collection = "", $data = array(), $name='ID') { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection selected to insert into", 500); 

									    } if (count($data) == 0 || !is_array($data)) { 

									      $this->error("Nothing to insert into Mongo collection or insert is not an array", 500); 

									    } try { 

									    /**

									      wxcity_base::load_sys_class('whtysqs','',0); 

									      $mongoseq_class = new whtysqs('creaseidsqs');

									      $re = $mongoseq_class->query("?name=" . $collection . "&opt=put&data=1");

									    **/

									      $re = put_sqs('list_mongo_creaseidsqs','1'); 

									      if(is_numeric($re)){ 

									        $re++; 

									        $data[$name] = intval($re); 

									      }else{ 

									        $data[$name] = intval(time()); 

									        //die('mongosqs error'); 

									      } 

									      $this->db->{$collection}->insert($data, array('fsync' => TRUE)); 

									      $this->clear(); 

									      return $data[$name]; 

									    } catch (MongoCursorException $e) { 

									      $this->error("Insert of data into MongoDB failed: {$e->getMessage()}", 500); 

									    } 

									  } 

									  public function insertWithId($collection = "", $data = array()) { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection selected to insert into", 500); 

									    } if (count($data) == 0 || !is_array($data)) { 

									      $this->error("Nothing to insert into Mongo collection or insert is not an array", 500); 

									    } try { 

									      $this->db->{$collection}->insert($data, array('fsync' => TRUE)); 

									      $this->clear(); 

									      return 1; 

									    } catch (MongoCursorException $e) { 

									      $this->error("Insert of data into MongoDB failed: {$e->getMessage()}", 500); 

									    } 

									  } 

									  /**

									  *

									  * UPDATE  *

									  *

									  * Update a document into the passed collection *

									  * @usage = $this->mongo_db->update('foo', $data = array());

									  */

									  public function update($collection = "", $data = array()) { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection selected to update", 500); 

									    } if (count($data) == 0 || !is_array($data)) { 

									      $this->error("Nothing to update in Mongo collection or update is not an array", 500); 

									    } try { 

									      $this->db->{$collection}->update($this->wheres, array('$set' => $data), array('fsync' => TRUE, 'multiple' => FALSE)); 

									      $this->clear(); 

									      return(TRUE); 

									    } catch (MongoCursorException $e) { 

									      $this->error("Update of data into MongoDB failed: {$e->getMessage()}", 500); 

									    } 

									  } 

									  /**

									  *

									  * UPDATE_ALL  *

									  *

									  * Insert a new document into the passed collection *

									  * @usage = $this->mongo_db->update_all('foo', $data = array());

									  */

									  public function update_all($collection = "", $data = array()) { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection selected to update", 500); 

									    } if (count($data) == 0 || !is_array($data)) { 

									      $this->error("Nothing to update in Mongo collection or update is not an array", 500); 

									    } try { 

									      $this->db->{$collection}->update($this->wheres, array('$set' => $data), array('fsync' => TRUE, 'multiple' => TRUE)); 

									      return(TRUE); 

									    } catch (MongoCursorException $e) { 

									      $this->error("Update of data into MongoDB failed: {$e->getMessage()}", 500); 

									    } 

									  } 

									  /**

									  *

									  * DELETE  *

									  *

									  * delete document from the passed collection based upon certain criteria *

									  * @usage = $this->mongo_db->delete('foo', $data = array());

									  */

									  public function delete($collection = "") { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection selected to delete from", 500); 

									    } try { 

									      $this->db->{$collection}->remove($this->wheres, array('fsync' => TRUE, 'justOne' => TRUE)); 

									      $this->clear(); 

									      return(TRUE); 

									    } catch (MongoCursorException $e) { 

									      $this->error("Delete of data into MongoDB failed: {$e->getMessage()}", 500); 

									    } 

									  } 

									  /**

									  *

									  * DELETE_ALL  *

									  *

									  * Delete all documents from the passed collection based upon certain criteria

									  *

									  * @usage = $this->mongo_db->delete_all('foo', $data = array());

									  */

									  public function delete_all($collection = "") { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection selected to delete from", 500); 

									    } try { 

									      $this->db->{$collection}->remove($this->wheres, array('fsync' => TRUE, 'justOne' => FALSE)); 

									      return(TRUE); 

									    } catch (MongoCursorException $e) { 

									      $this->error("Delete of data into MongoDB failed: {$e->getMessage()}", 500); 

									    } 

									  } 

									  /**

									  *

									  * ADD_INDEX  *

									  *

									  * Ensure an index of the keys in a collection with optional parameters.

									  To set values to descending order,

									  * you must pass values of either -1, FALSE, 'desc', or 'DESC', else they will be

									  * set to 1 (ASC). *

									  * @usage = $this->mongo_db->add_index($collection, array('first_name' => 'ASC', 'last_name' => -1), array('unique' => TRUE));

									  */

									  public function add_index($collection = "", $keys = array(), $options = array()) { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection specified to add index to", 500); 

									    } if (emptyempty($keys) || !is_array($keys)) { 

									      $this->error("Index could not be created to MongoDB Collection because no keys were specified", 500); 

									    } foreach ($keys as $col => $val) { 

									      if ($val == -1 || $val === FALSE || strtolower($val) == 'desc') { 

									        $keys[$col] = -1; 

									      } else { 

									        $keys[$col] = 1; 

									      } 

									    } if ($this->db->{$collection}->ensureIndex($keys, $options) == TRUE) { 

									      $this->clear(); 

									      return($this); 

									    } else { 

									      $this->error("An error occured when trying to add an index to MongoDB Collection", 500); 

									    } 

									  } 

									  /**

									  *

									  * REMOVE_INDEX   *

									  *

									  * Remove an index of the keys in a collection.

									  To set values to descending order,

									  * you must pass values of either -1, FALSE, 'desc', or 'DESC', else they will be

									  * set to 1 (ASC). *

									  * @usage = $this->mongo_db->remove_index($collection, array('first_name' => 'ASC', 'last_name' => -1));

									  */

									  public function remove_index($collection = "", $keys = array()) { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection specified to remove index from", 500); 

									    } if (emptyempty($keys) || !is_array($keys)) { 

									      $this->error("Index could not be removed from MongoDB Collection because no keys were specified", 500); 

									    } if ($this->db->{$collection}->deleteIndex($keys, $options) == TRUE) { 

									      $this->clear(); 

									      return($this); 

									    } else { 

									      $this->error("An error occured when trying to remove an index from MongoDB Collection", 500); 

									    } 

									  } 

									  /**

									  *

									  * REMOVE_ALL_INDEXES  *

									  *

									  * Remove all indexes from a collection. *

									  * @usage = $this->mongo_db->remove_all_index($collection);

									  */

									  public function remove_all_indexes($collection = "") { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection specified to remove all indexes from", 500); 

									    } $this->db->{$collection}->deleteIndexes(); 

									    $this->clear(); 

									    return($this); 

									  } 

									  /**

									  *

									  * LIST_INDEXES   *

									  *

									  * Lists all indexes in a collection. *

									  * @usage = $this->mongo_db->list_indexes($collection);

									  */

									  public function list_indexes($collection = "") { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection specified to remove all indexes from", 500); 

									    } return($this->db->{$collection}->getIndexInfo()); 

									  } 

									  /**

									  *

									  * DROP COLLECTION *

									  *

									  * Removes the specified collection from the database.

									  Be careful because this

									  * can have some very large issues in production!

									  */

									  public function drop_collection($collection = "") { 

									    if (emptyempty($collection)) { 

									      $this->error("No Mongo collection specified to drop from database", 500); 

									    } $this->db->{$collection}->drop(); 

									    return TRUE; 

									  } 

									  /**

									  *

									  * CLEAR  *

									  *

									  * Resets the class variables to default settings

									  */

									  private function clear() { 

									    $this->selects = array(); 

									    $this->wheres = array(); 

									    $this->limit = NULL; 

									    $this->offset = NULL; 

									    $this->sorts = array(); 

									  } 

									  /**

									  *

									  * WHERE INITIALIZER  *

									  *

									  * Prepares parameters for insertion in $wheres array().

									  */

									  private function where_init($param) { 

									    if (!isset($this->wheres[$param])) { 

									      $this->wheres[$param] = array(); 

									    } 

									  } 

									  public function error($str, $t) { 

									    echo $str; 

									    exit; 

									  } 

									} 

									?>

使用范例：

				?

									$table_name=trim(strtolower($this->table_name)); 

									$this->mongo_db->where($where); 

									$order=!emptyempty($order)?array('AID'=>'DESC'):array('AID'=>'ASC');

									//升序降序 

									$infos=$this->mongo_db->listinfo($table_name,$order,$page,$pagesize);

希望本文所述对大家的php程序设计有所帮助。

php实现的mongodb操作类实例

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