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;           $data = "<?phpreturn ".var_export($keys, true).";?>";           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。