php操作MongoDB类实例

本文实例讲述了php操作MongoDB类的方法。分享给大家供大家参考。具体如下：

1. MyMongo.php文件：

<?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', array('bar', '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', 20, 30)->get('foobar');

*

*/

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 ... $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 = "", $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' => 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, array('fsync' => true, '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, array('fsync' => true, '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', array('first_name' => 'ASC', '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', array('first_name' => 'ASC', '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 */

2. mongo_config.php配置文件：

<?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*/

3. MyMongoDemo.php文件：

?<?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程序设计有所帮助。