I have published several similar articles before, so you can refer to them.
Core code:
class NewMongodb {
private $mongo; //NewMongodb connection private $curr_db_name;
private $curr_table_name;
private $error;
public $config;
public function getInstance($mongo_server, $flag=array())
{
static $NewMongodb_arr;
if (empty($flag['tag']))
{
$flag['tag'] = 'default'; }
if (isset($flag['force']) && $flag['force'] == true)
{
$mongo = new NewMongodb($mongo_server);
if (empty($NewMongodb_arr[$flag['tag']]))
{
$NewMongodb_arr[$flag['tag']] = $mongo;
}
return $mongo;
}
else if (isset($NewMongodb_arr[$flag['tag']]) && is_resource($NewMongodb_arr[$flag['tag']]))
{
return $NewMongodb_arr[$flag['tag']];
}
else
{
$mongo = new NewMongodb($mongo_server);
$NewMongodb_arr[$flag['tag']] = $mongo;
return $mongo;
}
}
/**
* Constructor
* Support multiple mongo_servers (1. Connect to other servers if there is a problem 2. Automatically distribute queries to different servers evenly)
*
* Parameters:
* $mongo_server: array or string -array("127.0.0.1:1111", "127.0.0.1:2222")-"127.0.0.1:1111"
* $connect: Whether to connect when initializing mongo object, default connection
* $auto_balance: Whether to automatically load balancing, the default is
*
* Return value:
* Success: mongo object
* Failed: false
*/
public function __construct($mongo_server, $connect=true, $auto_balance=true)
{
if (is_array($mongo_server))
{
$mongo_server_num = count($mongo_server);
if ($mongo_server_num > 1 && $auto_balance)
{
$prior_server_num = rand(1, $mongo_server_num);
$rand_keys = array_rand($mongo_server,$mongo_server_num);
$mongo_server_str = $mongo_server[$prior_server_num-1];
foreach ($rand_keys as $key)
{
if ($key != $prior_server_num - 1)
{
$mongo_server_str .= ',' . $mongo_server[$key];
}
}
}
else
{
$mongo_server_str = implode(',', $mongo_server);
} }
else
{
$mongo_server_str = $mongo_server;
}
try {
$this->mongo = new MongoClient($mongo_server, array('connect'=>$connect));
}
catch (MongoConnectionException $e)
{
$this->error = $e->getMessage();
return false;
}
}
/**
* Connect to NewMongodb server
*
* Parameters: None
*
* Return value:
* Success: true
* Failed: false
*/
public function connect()
{
try {
$this->mongo->connect();
return true;
}
catch (MongoConnectionException $e)
{
$this->error = $e->getMessage();
return false;
}
}
/**
* select db
*
* Parameters: $dbname
*
* Return value: None
*/
public function selectDb($dbname)
{
$this->curr_db_name = $dbname;
}
/**
* Create index: If the index already exists, return.
*
* Parameters:
* $table_name: table name
* $index: index -array("id"=>1)-Create ascending index in the id field
* $index_param:Other conditions - whether unique index, etc.
*
* Return value:
* Success: true
* Failed: false
*/
public function ensureIndex($table_name, $index, $index_param=array())
{
$dbname = $this->curr_db_name;
$index_param['safe'] = 1;
try {
$this->mongo->$dbname->$table_name->ensureIndex($index, $index_param);
return true;
}
catch (MongoCursorException $e)
{
$this->error = $e->getMessage();
return false;
}
}
/**
* Insert record
*
* Parameters:
* $table_name: table name
* $record:Record
*
* Return value:
* Success: true
* Failed: false
*/
public function insert($table_name, $record)
{
$dbname = $this->curr_db_name;
try {
$this->mongo->$dbname->$table_name->insert($record, array('safe'=>true));
return true;
}
catch (MongoCursorException $e)
{
$this->error = $e->getMessage();
return false;
}
}
/**
* Number of records in the query table
*
* Parameters:
* $table_name: table name
*
* Return value: Number of records in the table
*/
public function count($table_name)
{
$dbname = $this->curr_db_name;
return $this->mongo->$dbname->$table_name->count();
}
/**
* Update records
*
* Parameters:
* $table_name: table name
* $condition: Update condition
* $newdata: New data record
* $options:Update selection-upsert/multiple
*
* Return value:
* Success: true
* Failed: false
*/
public function update($table_name, $condition, $newdata, $options=array())
{
$dbname = $this->curr_db_name;
$options['safe'] = 1;
if (!isset($options['multiple']))
{
$options['multiple'] = 0; }
try {
$this->mongo->$dbname->$table_name->update($condition, $newdata, $options);
return true;
}
catch (MongoCursorException $e)
{
$this->error = $e->getMessage();
return false;
}
}
/**
* Delete records
*
* Parameters:
* $table_name: table name
* $condition: Delete condition
* $options:Delete selection-justOne
*
* Return value:
* Success: true
* Failed: false
*/
public function remove($table_name, $condition, $options=array())
{
$dbname = $this->curr_db_name;
$options['safe'] = 1;
try {
$this->mongo->$dbname->$table_name->remove($condition, $options);
return true;
}
catch (MongoCursorException $e)
{
$this->error = $e->getMessage();
return false;
} }
/**
* Find records
*
* Parameters:
* $table_name: table name
* $query_condition: Field search criteria
* $result_condition: Query result limit conditions-limit/sort, etc.
* $fields: Get fields
*
* Return value:
* Success: Recordset
* Failed: false
*/
public function find($table_name, $query_condition, $result_condition=array(), $fields=array())
{
$dbname = $this->curr_db_name;
$cursor = $this->mongo->$dbname->$table_name->find($query_condition, $fields);
if (!empty($result_condition['start']))
{
$cursor->skip($result_condition['start']);
}
if (!empty($result_condition['limit']))
{
$cursor->limit($result_condition['limit']);
}
if (!empty($result_condition['sort']))
{
$cursor->sort($result_condition['sort']);
}
$result = array();
try {
while ($cursor->hasNext())
{
$result[] = $cursor->getNext();
}
}
catch (MongoConnectionException $e)
{
$this->error = $e->getMessage();
return false;
}
catch (MongoCursorTimeoutException $e)
{
$this->error = $e->getMessage();
return false;
}
return $result;
}
/**
* Find a record
*
* Parameters:
* $table_name: table name
* $condition: Find the criteria
* $fields: Get fields
*
* Return value:
* Success: a record
* Failed: false
*/
public function findOne($table_name, $condition, $fields=array())
{
$dbname = $this->curr_db_name;
return $this->mongo->$dbname->$table_name->findOne($condition, $fields);
}
/**
* Get the current error message
*
* Parameters: None
*
* Return value: Current error message
*/
public function getError()
{
return $this->error;
}
/*** NewMongodb class** examples:
* $mongo = new NewMongodb("127.0.0.1:11223");
* $mongo->selectDb("test_db");
* Create an index
* $mongo->ensureIndex("test_table", array("id"=>1), array('unique'=>true));
* Get records of the table
* $mongo->count("test_table");
* Insert record
* $mongo->insert("test_table", array("id"=>2, "title"=>"asdqw"));
* Update records
* $mongo->update("test_table", array("id"=>1),array("id"=>1,"title"=>"bbb"));
* Update record - update when it exists, add when it does not exist - equivalent to set
* $mongo->update("test_table", array("id"=>1),array("id"=>1,"title"=>"bbb"),array("upsert"=>1));
* Find records
* $mongo->find("c", array("title"=>"asdqw"), array("start"=>2,"limit"=>2,"sort"=>array("id"=>1)))
* Find a record
* $mongo->findOne("$mongo->findOne("ttt", array("id"=>1))", array("id"=>1));
* Delete records
* $mongo->remove("ttt", array("title"=>"bbb"));
* Only one record is deleted
* $mongo->remove("ttt", array("title"=>"bbb"), array("justOne"=>1));
* Get the error message of Mongo operation
* $mongo->getError();
*/
}