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MongoDB在PHP中的常用操作小结_php技巧

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Release: 2016-05-17 08:49:11
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$mongodb = new Mongo();

//$connection = new Mongo( "$dburl:$port" ); // connect to a remote host (default port)

$mydb = $mongodb->mydb;  //隐性创建数据库mydb

$mydb = $mongodb->selectDB("mydb");  //直接选择已经存在的数据库

$collection = $mydb->mycollect;   //选择所用文集,如果不存在,自动创建

$collection = $db->selectCollection('mydb');   //只选择,不创建

//插入新纪录

$collection->insert(array("name"=>"l4yn3", "age"=>"10", "sex":"unknow"));


//修改记录

$where = array("name"=>"l4yn3");

$update_item = array('$set'=>array("age"=>"15", "sex":"secret"));

$collection->update($where, $update_item);

$options['multiple'] = true; //默认是 false,是否改变匹配的多行

$collection->update($where, $update_item, $options);


//查询记录

$myinfo = $collection->findOne(array("name"=>"l4yn3"));

$myinfo = $collection->findOne(array("name"=>
"l4yn3"), array("age"=>"15"));


//按条件查找:
$query = array("name"=>"l4yn3");
$cursor = $collection->find($query); //在$collectio集合中查找满足$query的文档
while($cursor->hasNext())
{
var_dump($cursor->getNext()); //返回了数组
}


//返回文档记录数量

$collection->count();


//删除一个数据库:
$connection->dropDB("...");

//列出所有可用数据库:
$m->listDBs(); //无返回值
//关闭连接:
$connection->close();

php各种连接mongodb数据库的参数方式

//连接localhost:27017
$conn = new Mongo();
//连接远程主机默认端口
$conn = new Mongo('test.com');
//连接远程主机22011端口
$conn = new Mongo('test.com:22011');
//MongoDB有用户名密码
$conn = new Mongo("mongodb://${username}:${password}@localhost")
//MongoDB有用户名密码并指定数据库blog
$conn = new Mongo("mongodb://${username}:${password}@localhost/blog");
//多个服务器
$conn = new Mongo("mongodb://localhost:27017,localhost:27018");

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