《PHP操作MongoDB类实例》要点：
本文介绍了PHP操作MongoDB类实例，希望对您有用。如果有疑问，可以联系我们。
PHP学习本文实例讲述了PHP操作MongoDB类的办法.分享给大家供大家参考.具体如下：
<?PHP /** * 仿写CI的MongoDB * @author sparkHuang 2011-11-03 * */ class MyMongo { private $mongo_config = "mongo_config.PHP"; private $connection; private $db; private $mongo_connect_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; public function __construct() { if ( ! class_exists('Mongo')) { $this->log_error("The MongoDB PECL extentiosn has not been installed or enabled."); exit; } $this->connection_string(); $this->connect(); } /** * 更改数据库 * */ public function switch_db($database = '') { if (empty($database)) { $this->log_error("To switch MongoDB databases,a new database name must be specified"); exit; } $this->dbname = $database; try { $this->db = $this->connection->{$this->dbname}; return true; } catch(Exception $e) { $this->log_error("Unable to switch Mongo Databases: {$e->getMessage()}"); exit; } } /** * 设置select字段 * */ public function select($includs = array(),$excludes = array()) { if ( ! is_array($includs)) { $includs = (array)$includs; } if ( ! is_array($excludes)) { $excludes = (array)$excludes; } if ( ! empty($includs)) { foreach ($includs as $col) { $this->selects[$col] = 1; } } else { foreach ($excludes as $col) { $this->selects[$col] = 0; } } return($this); } /** * where条件查询判断 * * @usage = $this->mongo_db->where(array('foo' => 'bar'))->get('foobar'); * */ public function where($wheres = array()) { if ( ! is_array($wheres)) { $wheres = (array)$wheres; } if ( ! empty($wheres)) { foreach($wheres as $wh => $val) { $this->wheres[$wh] = $val; } } return($this); } /** * where ... in .. 条件查询判断 * * @usage = $this->mongo_db->where_in('foo',array('bar','zoo'))->get('foobar'); * */ public function where_in($field = '',$in = array()) { $this->where_init($field); $this->wheres[$field]['$in'] = $in; return($this); } /** * where ... not in .. 条件查询判断 * * @usage = $this->mongo_db->where_not_in('foo','zoo'))->get('foobar'); * */ public function where_not_in($field = '',$in = array()) { $this->where_init($field); $this->wheres[$field]['$nin'] = $in; return($this); } /** * where ... $field > $x .. 条件查询判断 * * @usage = $this->mongo_db->where_gt('foo',20)->get('foobar'); * */ public function where_gt($field = '',$x) { $this->where_init($field); $this->wheres[$field]['$gt'] = $x; return($this); } /** * where ... $field >= $x .. 条件查询判断 * * @usage = $this->mongo_db->where_gte('foo',20)->get('foobar'); * */ public function where_gte($field = '',$x) { $this->where_init($field); $this->wheres[$field]['$gte'] = $x; return($this); } /** * where ... $field < $x .. 条件查询判断 * * @usage = $this->mongo_db->where_lt('foo',20)->get('foobar'); * */ public function where_lt($field = '',$x) { $this->where_init($field); $this->wheres[$field]['$lt'] = $x; return($this); } /** * where ... $field <= $x .. 条件查询判断 * * @usage = $this->mongo_db->where_lte('foo',20)->get('foobar'); * */ public function where_lte($field = '',$x) { $this->where_init($field); $this->wheres[$field]['$lte'] = $x; return($this); } /** * where ... $field >= $x AND $field <= $y .. 条件查询判断 * * @usage = $this->mongo_db->where_between('foo',20,30)->get('foobar'); * */ public function where_between($field = '',$x,$y) { $this->where_init($field); $this->wheres[$field]['$gte'] = $x; $this->wheres[$field]['$lte'] = $y; return($this); } /** * where ... $field > $x AND $field < $y .. 条件查询判断 * * @usage = $this->mongo_db->where_between_ne('foo',30)->get('foobar'); * */ public function where_between_ne($field = '',$y) { $this->where_init($field); $this->wheres[$field]['$gt'] = $x; $this->wheres[$field]['$lt'] = $y; return($this); } /** * where ... $field <> $x .. 条件查询判断 * * @usage = $this->mongo_db->where_ne('foo',20)->get('foobar'); * */ public function where_ne($field = '',$x) { $this->where_init($field); $this->wheres[$field]['$ne'] = $x; return($this); } /** * where ... or .. 条件查询判断 * * @usage = $this->mongo_db->where_or('foo',array('foo','bar'))->get('foobar'); * */ public function where_or($field = '',$values) { $this->where_init($field); $this->wheres[$field]['$or'] = $values; return($this); } /** * where ... and .. 条件查询判断 * * @usage = $this->mongo_db->where_and( array ( 'foo' => 1,'b' => 'someexample' ); */ public function where_and( $elements_values = array() ) { foreach ( $elements_values as $element => $val ) { $this->wheres[$element] = $val; } return($this); } /** * where $field % $num = $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条件查询(PHP中定义MongoRegex类实现) * * @usage : $this->mongo_db->like('foo','bar','im',false,false)->get(); */ public function like($field = "",$value = "",$flags = "i",$enable_start_wildcard = true,$enable_end_wildcard = true) { $field = (string)$field; $this->where_init($field); $value = (string)$value; $value = quotMeta($value); if (true !== $enable_start_wildcard) { $value = "^".$value; } if (true !== $enable_end_wildcard) { $value .= "$"; } $regex = "/$value/$flags"; $this->wheres[$field] = new MongoRegex($regex); return($this); } /** * order排序( 1 => ASC,-1 => DESC) * * @usage: $this->mongo_db->get_where('foo',array('name' => 'tom'))->order_by(array("age" => 1)); */ public function order_by($fields = array()) { 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 * * @usage: $this->mongo_db->get_where('foo',array('name' => 'tom'))->limit(10); */ public function limit($x = 999999) { if ($x !== NULL && is_numeric($x) && $x >= 1) { $this->limit = (int)$x; } return($this); } /** * offset * * @usage: $this->mongo_db->get_where('foo',array('name' => 'tom'))->offset(10); */ public function offset($x = 0) { if($x !== NULL && is_numeric($x) && $x >= 1) { $this->offset = (int) $x; } return($this); } /** * get_where * * @usage: $this->mongo_db->get_where('foo',array('bar' => 'something')); */ public function get_where($collection = "",$where = array(),$limit = 999999) { return($this->where($where)->limit($limit)->get($collection)); } /** * get * * @usage: $this->mongo_db->where(array('name' => 'tom'))->get('foo'); */ public function get($collection) { if (empty($collection)) { $this->log_error("In order to retreive documents from MongoDB,a collection name must be passed"); exit; } $results = array(); $results = $this->db->{$collection}->find($this->wheres,$this->selects)->limit((int)$this->limit)->skip((int)$this->offset)->sort($this->sorts); $returns = array(); foreach($results as $result) { $returns[] = $result; } $this->clear(); return($returns); } /** * count * * @usage: $this->db->get_where('foo',array('name' => 'tom'))->count('foo'); */ public function count($collection) { if (empty($collection)) { $this->log_error("In order to retreive documents from MongoDB,a collection name must be passed"); exit; } $count = $this->db->{$collection}->find($this->wheres)->limit((int)$this->limit)->skip((int)$this->offset)->count(); $this->clear(); return($count); } /** * insert * * @usage: $this->mongo_db->insert('foo',array('name' => 'tom')); */ public function insert($collection = "",$data = array()) { if (empty($collection)) { $this->log_error("No Mongo collection selected to delete from"); exit; } if (count($data) == 0 || ! is_array($data)) { $this->log_error("nothing to insert into Mongo collection or insert is not an array"); exit; } try { $this->db->{$collection}->insert($data,array('fsync' => true)); if (isset($data['_id'])) { return($data['_id']); } else { return(false); } } catch(MongoCursorException $e) { $this->log_error("Insert of data into MongoDB Failed: {$e->getMessage()}"); exit; } } /** * update : 利用MongoDB的 $set 实现 * * @usage : $this->mongo_db->where(array('name' => 'tom'))->update('foo',array('age' => 24)) */ public function update($collection = "",$data = array()) { if (empty($collection)) { $this->log_error("No Mongo collection selected to delete from"); exit; } if (count($data) == 0 || ! is_array($data)) { $this->log_error("nothing to update in Mongo collection or update is not an array"); exit; } try { $this->db->{$collection}->update($this->wheres,array('$set' => $data),array('fsync' => true,'multiple' => false)); //注意: multiple为false return(true); } catch(MongoCursorException $e) { $this->log_error("Update of data into MongoDB Failed: {$e->getMessage()}"); exit; } } /** * update_all : 利用MongoDB的 $set 实现 * * @usage : $this->mongo_db->where(array('name' => 'tom'))->update_all('foo',array('age' => 24)); */ public function update_all($collection = "",'multiple' => true)); //注意: multiple为true return(true); } catch(MongoCursorException $e) { $this->log_error("Update of data into MongoDB Failed: {$e->getMessage()}"); exit; } } /** * delete * * @usage : $this->mongo_db->where(array('name' => 'tom'))->delete('foo'); */ public function delete($collection = "") { if (empty($collection)) { $this->log_error("No Mongo collection selected to delete from"); exit; } try { $this->db->{$collection}->remove($this->wheres,'justOne' => true)); //注意justOne为true; } catch(MongoCursorException $e) { $this->log_error("Delete of data into MongoDB Failed: {$e->getMessage()}"); exit; } } /** * delete_all * * @usage : $this->mongo_db->where(array('name' => 'tom'))->delete_all('foo'); */ public function delete_all($collection = "") { if (empty($collection)) { $this->log_error("No Mongo collection selected to delete from"); exit; } try { $this->db->{$collection}->remove($this->wheres,'justOne' => false)); //注意justOne为false; } catch(MongoCursorException $e) { $this->log_error("Delete of data into MongoDB Failed: {$e->getMessage()}"); exit; } } /** * add_index * * @usage : $this->mongo_db->add_index('foo',array('first_name' => 'ASC','last_name' => -1),array('unique' => true))); */ public function add_index($collection,$keys = array(),$options = array()) { if (empty($collection)) { $this->log_error("No Mongo collection specified to add index to"); exit; } if (empty($keys) || ! is_array($keys)) { $this->log_error("Index Could not be created to MongoDB Collection because no keys were specified"); exit; } foreach($keys as $col => $val) { if ($val == -1 || $val == false || strtolower($val) == 'desc') { $keys[$col] = -1; } else { $keys[$col] = 1; } } //在此没有对$options数组的有效性进行验证 if (true == $this->db->{$collection}->ensureIndex($keys,$options)) { $this->clear(); return($this); } else { $this->log_error("An error occured when trying to add an index to MongoDB Collection"); exit; } } /** * remove_index * * @usage : $this->mongo_db->remove_index('foo','last_name' => -1)) */ public function remove_index($collection = "",$keys = array()) { if (empty($collection)) { $this->log_error("No Mongo collection specified to add index to"); exit; } if (empty($keys) || ! is_array($keys)) { $this->log_error("Index Could not be created to MongoDB Collection because no keys were specified"); exit; } if ($this->db->{$collection}->deleteIndex($keys)) { $this->clear(); return($this); } else { $this->log_error("An error occured when trying to add an index to MongoDB Collection"); exit; } } /** * remove_all_index * * @usage : $this->mongo_db->remove_all_index('foo','last_name' => -1)) */ public function remove_all_index($collection = "",$keys = array()) { if (empty($collection)) { $this->log_error("No Mongo collection specified to add index to"); exit; } if (empty($keys) || ! is_array($keys)) { $this->log_error("Index Could not be created to MongoDB Collection because no keys were specified"); exit; } if ($this->db->{$collection}->deleteIndexes($keys)) { $this->clear(); return($this); } else { $this->log_error("An error occured when trying to add an index to MongoDB Collection"); exit; } } /** * list_indexes * * @usage : $this->mongo_db->list_indexes('foo'); */ public function list_indexes($collection = "") { if (empty($collection)) { $this->log_error("No Mongo collection specified to add index to"); exit; } return($this->db->{$collection}->getIndexInfo()); } /** * drop_collection * * @usage : $this->mongo_db->drop_collection('foo'); */ public function drop_collection($collection = "") { if (empty($collection)) { $this->log_error("No Mongo collection specified to add index to"); exit; } $this->db->{$collection}->drop(); return(true); } /** * 生成连接MongoDB 参数字符串 * */ private function connection_string() { include_once($this->mongo_config); $this->host = trim($config['host']); $this->port = trim($config['port']); $this->user = trim($config['user']); $this->pass = trim($config['pass']); $this->dbname = trim($config['dbname']); $this->persist = trim($config['persist']); $this->persist_key = trim($config['persist_key']); $connection_string = "mongodb://"; if (empty($this->host)) { $this->log_error("The Host must be set to connect to MongoDB"); exit; } if (empty($this->dbname)) { $this->log_error("The Database must be set to connect to MongoDB"); exit; } if ( ! empty($this->user) && ! empty($this->pass)) { $connection_string .= "{$this->user}:{$this->pass}@"; } if ( isset($this->port) && ! empty($this->port)) { $connection_string .= "{$this->host}:{$this->port}"; } else { $connection_string .= "{$this->host}"; } $this->connection_string = trim($connection_string); } /** * 连接MongoDB 获取数据库操作句柄 * */ private function connect() { $options = array(); if (true === $this->persist) { $options['persist'] = isset($this->persist_key) && ! empty($this->persist_key) ? $this->persist_key : "ci_mongo_persist"; } try { $this->connection = new Mongo($this->connection_string,$options); $this->db = $this->connection->{$this->dbname}; return ($this); } catch (MongoConnectionException $e) { $this->log_error("Unable to connect to MongoDB: {$e->getMessage()}"); } } /** * 初始化清理部分成员变量 * */ private function clear() { $this->selects = array(); $this->wheres = array(); $this->limit = NULL; $this->offset = NULL; $this->sorts = array(); } /** * 依据字段名初始化处理$wheres数组 * */ private function where_init($param) { if ( ! isset($this->wheres[$param])) { $this->wheres[$param] = array(); } } /** * 错误记录 * */ private function log_error($msg) { $msg = "[Date: ".date("Y-m-i H:i:s")."] ".$msg; @file_put_contents("./error.log",print_r($msg."\n",true),FILE_APPEND); } } /* End of MyMongo.PHP */
<?PHP $config["host"] = "localhost"; $config["user"] = ""; $config["pass"] = ""; $config["port"] = 27017; $config["dbname"] = "test"; $config['persist'] = TRUE; $config['persist_key'] = 'ci_mongo_persist'; /*End of mongo_config.PHP*/
<?PHP include_once("MyMongo.PHP"); $conn = new MyMongo(); //删除所有记录 $conn->delete_all("blog"); //插入第一条记录 $value = array("name" => "小明","age" => 25,"addr" => array("country" => "中国","province" => "广西","city" => "桂林")); $conn->insert("blog",$value); var_dump($conn->select(array("name","age"))->get("blog")); var_dump($conn->get("blog")); /* End of MyMongoDemo.PHP */
希望本文所述对大家的PHP程序设计有所赞助.
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