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说到php连mongoDB，不得不先介绍一下php的官方手册，网址在：http://us.php.net/manual/en/book.mongo.php，接下来给大家分享一个本人常用的MONGODB的操作类，详见的数据库操作都有了，小伙伴可以参考下。
mongo_db.php
<?php
/**
* Created by PhpStorm.
* User: yangyulong
* Date: 2015/5/26
* Time: 13:45
*/
class Mongo_db
{
private static $instanceof = NULL;
public $mongo;
private $host = 'localhost';
private $port = '27017';
private $db;
public $dbname;
private $table = NULL;
/**
* 初始化类，得到mongo的实例对象
*/
public function __construct($host = NULL, $port = NULL, $dbname = NULL, $table = NULL)
{
if (NULL === $dbname) {
$this->throwError('集合不能为空！');
}
//判断是否传递了host和port
if (NULL !== $host) {
$this->host = $host;
}
if (NULL !== $port) {
$this->port = $port;
}
$this->table = $table;
$this->mongo = new MongoClient($this->host . ':' . $this->port);
if ($this->getVersion() >= '0.9.0') {
$this->dbname = $this->mongo->selectDB($dbname);
$this->db = $this->dbname->selectCollection($table);
} else {
$this->db = $this->mongo->$dbname->$table;
}
}
public function getVersion()
{
return MongoClient::VERSION;
}
/**
* 单例模式
* @return Mongo|null
*/
//public static function getInstance($host=null, $port=null, $dbname=null, $table=null){
//
// if(!(self::$instanceof instanceof self)){
// self::$instanceof = new self($host, $port, $dbname, $table);
// }
//
// return self::$instanceof;
//}
/**
* 插入一条数据
* @param array $doc
*/
public function insert($doc = array())
{
if (empty($doc)) {
$this->throwError('插入的数据不能为空！');
}
//保存数据信息
try {
if (!$this->db->insert($doc)) {
throw new MongoException('插入数据失败');
}
} catch (MongoException $e) {
$this->throwError($e->getMessage());
}
}
/**
* 插入多条数据信息
* @param array $doc
*/
public function insertMulti($doc = array())
{
if (empty($doc)) {
$this->throwError('插入的数据不能为空！');
}
//插入数据信息
foreach ($doc as $key => $val) {
//判断$val是不是数组
if (is_array($val)) {
$this->insert($val);
}
}
}
/**
* 查找一条记录
* @return array|null
*/
public function findOne($where = NULL)
{
if (NULL === $where) {
try {
if ($result = $this->db->findOne()) {
return $result;
} else {
throw new MongoException('查找数据失败');
}
} catch (MongoException $e) {
$this->throwError($e->getMessage());
}
} else {
try {
if ($result = $this->db->findOne($where)) {
return $result;
} else {
throw new MongoException('查找数据失败');
}
} catch (MongoException $e) {
$this->throwError($e->getMessage());
}
}
}
/**
* todo 带条件的随后做
* 查找所有的文档
* @return MongoCursor
*/
public function find($where = NULL)
{
if (NULL === $where) {
try {
if ($result = $this->db->find()) {
} else {
throw new MongoException('查找数据失败');
}
} catch (MongoException $e) {
$this->throwError($e->getMessage());
}
} else {
try {
if ($result = $this->db->find($where)) {
} else {
throw new MongoException('查找数据失败');
}
} catch (MongoException $e) {
$this->throwError($e->getMessage());
}
}
$arr = array();
foreach ($result as $id => $val) {
$arr[] = $val;
}
return $arr;
}
/**
* 获取记录条数
* @return int
*/
public function getCount()
{
try {
if ($count = $this->db->count()) {
return $count;
} else {
throw new MongoException('查找总数失败');
}
} catch (MongoException $e) {
$this->throwError($e->getMessage());
}
}
/**
* 获取所有的数据库
* @return array
*/
public function getDbs()
{
return $this->mongo->listDBs();
}
/**
* 删除数据库
* @param null $dbname
* @return mixed
*/
public function dropDb($dbname = NULL)
{
if (NULL !== $dbname) {
$retult = $this->mongo->dropDB($dbname);
if ($retult['ok']) {
return TRUE;
} else {
return FALSE;
}
}
$this->throwError('请输入要删除的数据库名称');
}
/**
* 强制关闭数据库的链接
*/
public function closeDb()
{
$this->mongo->close(TRUE);
}
/**
* 输出错误信息
* @param $errorInfo 错误内容
*/
public function throwError($errorInfo='')
{
echo "<h3>出错了：$errorInfo</h3>";
die();
}
}
以上所述就是本文的全部内容了，希望大家能够喜欢。 | 
发表于 2018-12-25 17:39:12
