php封装的mongodb操作类代码


Posted in PHP onAugust 06, 2017

核心代码

<?php

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */


class mongo_db {

  private $config;
  private $connection;
  private $db;
  private $connection_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;
  private $timeout = 200;
  private $key = 0;
  /**   *  --------------------------------------------------------------------------------   * CONSTRUCTOR * --------------------------------------------------------------------------------   *  * Automatically check if the Mongo PECL extension has been installed/enabled. * Generate the connection string and establish a connection to the MongoDB.  */

  public function __construct() {
    if((IS_NOSQL != 1)){
      return;
    }
    if (!class_exists('Mongo')) {
      //$this->error("The MongoDB PECL extension has not been installed or enabled", 500);
    }
    $configs =wxcity_base::load_config("cache","mongo_db");
    $num = count($configs['connect']);
    $this->timeout = trim($configs['timeout']);
    $keys = wxcity_base::load_config('double');
    $this->key = $keys['mongo_db'];
    $this->config = $configs['connect'][$this->key];
    $status = $this->connect();
    if($status == false)
    {
      for($i = 1; $i < $num; $i++)
      {
        $n = $this->key + $i;
        $key = $n >= $num ? $n - $num : $n;
        $this->config = $configs['connect'][$key];
        $status = $this->connect();
        if($status!=false)
        {
          $keys['mongo_db'] = $key ;
          $this->key = $key;
          $data = "<?php\nreturn ".var_export($keys, true).";\n?>";
          file_put_contents(WHTY_PATH.'configs/double.php', $data, LOCK_EX);
          break;
        }
      }
    }
    if($status==false)
    {
      die('mongoDB not connect');
    }
  }

  function __destruct() {
    if((IS_NOSQL != 1)){
      return;
    }
    if($this->connection)
    {
      $this->connection->close();
    }
  }

  /**   *  --------------------------------------------------------------------------------   * CONNECT TO MONGODB  * --------------------------------------------------------------------------------   *  * Establish a connection to MongoDB using the connection string generated in  * the connection_string() method. If 'mongo_persist_key' was set to true in the  * config file, establish a persistent connection. We allow for only the 'persist'   * option to be set because we want to establish a connection immediately. */
  private function connect() {
    $this->connection_string();
    $options = array('connect'=>true,'timeout'=>$this->timeout);
    try {
      $this->connection = new Mongo($this->connection_string, $options);
      $this->db = $this->connection->{$this->dbname};
      return($this);
    } catch (MongoConnectionException $e) {
      return false;
    }

  }
  /**   *  --------------------------------------------------------------------------------   * BUILD CONNECTION STRING * --------------------------------------------------------------------------------   *  * Build the connection string from the config file.  */
  private function connection_string() {
    $this->host = trim($this->config['hostname']);
    $this->port = trim($this->config['port']);
    $this->user = trim($this->config['username']);
    $this->pass = trim($this->config['password']);
    $this->dbname = trim($this->config['database']);
    $this->persist = trim($this->config['autoconnect']);
    $this->persist_key = trim($this->config['mongo_persist_key']);

    $connection_string = "mongodb://";
    if (emptyempty($this->host)) {
      $this->error("The Host must be set to connect to MongoDB", 500);
    } if (emptyempty($this->dbname)) {
      $this->error("The Database must be set to connect to MongoDB", 500);
    } if (!emptyempty($this->user) && !emptyempty($this->pass)) {
      $connection_string .= "{$this->user}:{$this->pass}@";
    } if (isset($this->port) && !emptyempty($this->port)) {
      $connection_string .= "{$this->host}:{$this->port}";
    } else {
      $connection_string .= "{$this->host}";
    } $this->connection_string = trim($connection_string);
  }

  /**   *  --------------------------------------------------------------------------------   * Switch_db  * --------------------------------------------------------------------------------   *  * Switch from default database to a different db  */
  public function switch_db($database = '') {
    if (emptyempty($database)) {
      $this->error("To switch MongoDB databases, a new database name must be specified", 500);
    } $this->dbname = $database;
    try {
      $this->db = $this->connection->{$this->dbname};
      return(TRUE);
    } catch (Exception $e) {
      $this->error("Unable to switch Mongo Databases: {$e->getMessage()}", 500);
    }
  }

  /**   *  --------------------------------------------------------------------------------   * SELECT FIELDS  * --------------------------------------------------------------------------------   *  * Determine which fields to include OR which to exclude during the query process. * Currently, including and excluding at the same time is not available, so the   * $includes array will take precedence over the $excludes array. If you want to  * only choose fields to exclude, leave $includes an empty array().   *  * @usage: $this->mongo_db->select(array('foo', 'bar'))->get('foobar');  */
  public function select($includes = array(), $excludes = array()) {
    if (!is_array($includes)) {
      $includes = array();
    }
    if (!is_array($excludes)) {
      $excludes = array();
    }
    if (!emptyempty($includes)) {
      foreach ($includes as $col) {
        $this->selects[$col] = 1;
      }
    } else {
      foreach ($excludes as $col) {
        $this->selects[$col] = 0;
      }
    } return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE PARAMETERS   * --------------------------------------------------------------------------------   *  * Get the documents based on these search parameters. The $wheres array should  * be an associative array with the field as the key and the value as the search  * criteria.  *  * @usage = $this->mongo_db->where(array('foo' => 'bar'))->get('foobar');  */
  public function where($wheres = array()) {
    foreach ((array)$wheres as $wh => $val) {
      $this->wheres[$wh] = $val;
    } return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE_IN PARAMETERS * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is in a given $in array().   *  * @usage = $this->mongo_db->where_in('foo', array('bar', 'zoo', 'blah'))->get('foobar'); */
  public function where_in($field = "", $in = array()) {
    $this->where_init($field);
    $this->wheres[$field]['$in'] = $in;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE_NOT_IN PARAMETERS * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is not in a given $in array().   *  * @usage = $this->mongo_db->where_not_in('foo', array('bar', 'zoo', 'blah'))->get('foobar'); */
  public function where_not_in($field = "", $in = array()) {
    $this->where_init($field);
    $this->wheres[$field]['$nin'] = $in;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE GREATER THAN PARAMETERS  * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is greater than $x   *  * @usage = $this->mongo_db->where_gt('foo', 20);   */
  public function where_gt($field = "", $x) {
    $this->where_init($field);
    $this->wheres[$field]['$gt'] = $x;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE GREATER THAN OR EQUAL TO PARAMETERS  * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is greater than or equal to $x   *  * @usage = $this->mongo_db->where_gte('foo', 20);  */
  public function where_gte($field = "", $x) {
    $this->where_init($field);
    $this->wheres[$field]['$gte'] = $x;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE LESS THAN PARAMETERS  * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is less than $x  *  * @usage = $this->mongo_db->where_lt('foo', 20);   */
  public function where_lt($field = "", $x) {
    $this->where_init($field);
    $this->wheres[$field]['$lt'] = $x;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE LESS THAN OR EQUAL TO PARAMETERS  * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is less than or equal to $x  *  * @usage = $this->mongo_db->where_lte('foo', 20);  */
  public function where_lte($field = "", $x) {
    $this->where_init($field);
    $this->wheres[$field]['$lte'] = $x;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE BETWEEN PARAMETERS   * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is between $x and $y  *  * @usage = $this->mongo_db->where_between('foo', 20, 30);  */
  public function where_between($field = "", $x, $y) {
    $this->where_init($field);
    $this->wheres[$field]['$gte'] = $x;
    $this->wheres[$field]['$lte'] = $y;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE BETWEEN AND NOT EQUAL TO PARAMETERS  * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is between but not equal to $x and $y *  * @usage = $this->mongo_db->where_between_ne('foo', 20, 30);   */
  public function where_between_ne($field = "", $x, $y) {
    $this->where_init($field);
    $this->wheres[$field]['$gt'] = $x;
    $this->wheres[$field]['$lt'] = $y;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE NOT EQUAL TO PARAMETERS  * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is not equal to $x   *  * @usage = $this->mongo_db->where_between('foo', 20, 30);  */
  public function where_ne($field = "", $x) {
    $this->where_init($field);
    $this->wheres[$field]['$ne'] = $x;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE OR   * --------------------------------------------------------------------------------   *  * Get the documents where the value of a $field is in one or more values  *  * @usage = $this->mongo_db->where_or('foo', array( 'foo', 'bar', 'blegh' ); */
  public function where_or($field = "", $values) {
    $this->where_init($field);
    $this->wheres[$field]['$or'] = $values;
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE AND  * --------------------------------------------------------------------------------   *  * Get the documents where the elements match the specified values *  * @usage = $this->mongo_db->where_and( array ( 'foo' => 1, 'b' => 'someexample' );   */
  public function where_and($elements_values = array()) {
    foreach ((array)$elements_values as $element => $val) {
      $this->wheres[$element] = $val;
    } return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE MOD  * --------------------------------------------------------------------------------   *  * Get the documents where $field % $mod = $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 PARAMETERS * --------------------------------------------------------------------------------   *    * Get the documents where the (string) value of a $field is like a value. The defaults   * allow for a case-insensitive search.   *  * @param $flags  * Allows for the typical regular expression flags:   *   i = case insensitive   *   m = multiline  *   x = can contain comments   *   l = locale  *   s = dotall, "." matches everything, including newlines  *   u = match unicode  *  * @param $enable_start_wildcard  * If set to anything other than TRUE, a starting line character "^" will be prepended * to the search value, representing only searching for a value at the start of   * a new line. *  * @param $enable_end_wildcard * If set to anything other than TRUE, an ending line character "$" will be appended  * to the search value, representing only searching for a value at the end of  * a line. *  * @usage = $this->mongo_db->like('foo', 'bar', 'im', FALSE, TRUE);  */
  public function like($field = "", $value = "", $flags = "i", $enable_start_wildcard = TRUE, $enable_end_wildcard = TRUE) {
    $field = (string) trim($field);
    $this->where_init($field);
    $value = (string) trim($value);
    $value = quotemeta($value);
    if ($enable_start_wildcard !== TRUE) {
      $value = "^" . $value;
    } if ($enable_end_wildcard !== TRUE) {
      $value .= "$";
    } $regex = "/$value/$flags";
    $this->wheres[$field] = new MongoRegex($regex);
    return($this);
  }

  public function wheres($where){
    $this->wheres = $where;
  }

  /**   *  --------------------------------------------------------------------------------   * ORDER BY PARAMETERS * --------------------------------------------------------------------------------   *  * Sort the documents based on the parameters passed. To set values to descending order,  * you must pass values of either -1, FALSE, 'desc', or 'DESC', else they will be  * set to 1 (ASC). *  * @usage = $this->mongo_db->where_between('foo', 20, 30);  */
  public function order_by($fields = array()) {
    if (!is_array($fields) || !count($fields)) return ;
    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 DOCUMENTS * --------------------------------------------------------------------------------   *  * Limit the result set to $x number of documents  *  * @usage = $this->mongo_db->limit($x);  */
  public function limit($x = 99999) {
    if ($x !== NULL && is_numeric($x) && $x >= 1) {
      $this->limit = (int) $x;
    } return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * OFFSET DOCUMENTS   * --------------------------------------------------------------------------------   *  * Offset the result set to skip $x number of documents   *  * @usage = $this->mongo_db->offset($x); */
  public function offset($x = 0) {
    if ($x !== NULL && is_numeric($x) && $x >= 1) {
      $this->offset = (int) $x;
    } return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * GET_WHERE  * --------------------------------------------------------------------------------   *  * Get the documents based upon the passed parameters  *  * @usage = $this->mongo_db->get_where('foo', array('bar' => 'something'));  */
  public function get_where($collection = "", $where = array(), $limit = 99999, $orderby=array()) {
    if (is_array($orderby) || !emptyempty($orderby)) {
      $order_by = $this->order_by($order_by);
    }
    return($this->where($where)->limit($limit)->get($collection));
  }
  public function selectA($collection = "", $limit = 99999, $orderby=array()) {
    if(intval($limit)<1){
      $limit = 999999;
    }
    $order_by = $this->order_by($orderby);
    $re = $this->limit($limit)->get($collection);
    $this->clear();
    return (array)$re;
  }

  public function listinfo($collection = "", $orderby=array(), $page=1, $pagesize=12) {
    $page = max(intval($page), 1);
    $offset = $pagesize * ($page - 1);
    $pagesizes = $offset + $pagesize;
    $this->offset($offset);
    $order_by = $this->order_by($orderby);
    $re = $this->limit($pagesize)->get($collection);
    $this->limit(999999);
    $count = $this->count($collection);
    $this->pages = pages($count, $page, $pagesize);
    return (array)$re;
  }

  /**   *  --------------------------------------------------------------------------------   * GET * --------------------------------------------------------------------------------   *  * Get the documents based upon the passed parameters  *  * @usage = $this->mongo_db->get('foo', array('bar' => 'something')); */
  public function get($collection = "") {
    if (emptyempty($collection)) {
      $this->error("In order to retreive documents from MongoDB, a collection name must be passed", 500);
    } $results = array();
    $documents = $this->db->{$collection}->find($this->wheres, $this->selects)->limit((int) $this->limit)->skip((int) $this->offset)->sort($this->sorts);
    $returns = array();
    foreach ($documents as $doc): $returns[] = $doc;
    endforeach;
    return($returns);
  }

  public function getMy($collection = "") {
    if (emptyempty($collection)) {
      $this->error("In order to retreive documents from MongoDB, a collection name must be passed", 500);
    } $results = array();
    $documents = $this->db->{$collection}->find($this->wheres, $this->selects)->limit((int) $this->limit)->skip((int) $this->offset)->sort($this->sorts);
    $returns = array();
    foreach ($documents as $doc): $returns[] = $doc;
    endforeach;
    $this -> clear();
    return($returns);
  }

  /**   *  --------------------------------------------------------------------------------   * COUNT  * --------------------------------------------------------------------------------   *  * Count the documents based upon the passed parameters   *  * @usage = $this->mongo_db->get('foo'); */
  public function count($collection = "") {
    if (emptyempty($collection)) {
      $this->error("In order to retreive a count of documents from MongoDB, a collection name must be passed", 500);
    } $count = $this->db->{$collection}->find($this->wheres)->limit((int) $this->limit)->skip((int) $this->offset)->count();
    $this->clear();
    return($count);
  }

  /**   *  --------------------------------------------------------------------------------   * INSERT  * --------------------------------------------------------------------------------   *  * Insert a new document into the passed collection   *  * @usage = $this->mongo_db->insert('foo', $data = array()); */
  public function insert($collection = "", $data = array(), $name='ID') {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection selected to insert into", 500);
    } if (count($data) == 0 || !is_array($data)) {
      $this->error("Nothing to insert into Mongo collection or insert is not an array", 500);
    } try {
      /**
      wxcity_base::load_sys_class('whtysqs','',0);
      $mongoseq_class = new whtysqs('creaseidsqs');
      $re = $mongoseq_class->query("?name=" . $collection . "&opt=put&data=1");
       **/
      $re = put_sqs('list_mongo_creaseidsqs','1');
      if(is_numeric($re)){
        $re++;
        $data[$name] = intval($re);
      }else{
        $data[$name] = intval(time());
        //die('mongosqs error');
      }
      $this->db->{$collection}->insert($data, array('fsync' => TRUE));
      $this->clear();
      return $data[$name];
    } catch (MongoCursorException $e) {
      $this->error("Insert of data into MongoDB failed: {$e->getMessage()}", 500);
    }
  }

  public function insertWithId($collection = "", $data = array()) {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection selected to insert into", 500);
    } if (count($data) == 0 || !is_array($data)) {
      $this->error("Nothing to insert into Mongo collection or insert is not an array", 500);
    } try {
      $this->db->{$collection}->insert($data, array('fsync' => TRUE));
      $this->clear();
      return 1;
    } catch (MongoCursorException $e) {
      $this->error("Insert of data into MongoDB failed: {$e->getMessage()}", 500);
    }
  }
  /**   *  --------------------------------------------------------------------------------   * UPDATE  * --------------------------------------------------------------------------------   *  * Update a document into the passed collection   *  * @usage = $this->mongo_db->update('foo', $data = array()); */
  public function update($collection = "", $data = array()) {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection selected to update", 500);
    } if (count($data) == 0 || !is_array($data)) {
      $this->error("Nothing to update in Mongo collection or update is not an array", 500);
    } try {
      $this->db->{$collection}->update($this->wheres, array('$set' => $data), array('fsync' => TRUE, 'multiple' => FALSE));
      $this->clear();
      return(TRUE);
    } catch (MongoCursorException $e) {
      $this->error("Update of data into MongoDB failed: {$e->getMessage()}", 500);
    }
  }

  /**   *  --------------------------------------------------------------------------------   * UPDATE_ALL  * --------------------------------------------------------------------------------   *  * Insert a new document into the passed collection   *  * @usage = $this->mongo_db->update_all('foo', $data = array()); */
  public function update_all($collection = "", $data = array()) {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection selected to update", 500);
    } if (count($data) == 0 || !is_array($data)) {
      $this->error("Nothing to update in Mongo collection or update is not an array", 500);
    } try {
      $this->db->{$collection}->update($this->wheres, array('$set' => $data), array('fsync' => TRUE, 'multiple' => TRUE));
      return(TRUE);
    } catch (MongoCursorException $e) {
      $this->error("Update of data into MongoDB failed: {$e->getMessage()}", 500);
    }
  }

  /**   *  --------------------------------------------------------------------------------   * DELETE  * --------------------------------------------------------------------------------   *  * delete document from the passed collection based upon certain criteria  *  * @usage = $this->mongo_db->delete('foo', $data = array()); */
  public function delete($collection = "") {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection selected to delete from", 500);
    } try {
      $this->db->{$collection}->remove($this->wheres, array('fsync' => TRUE, 'justOne' => TRUE));
      $this->clear();
      return(TRUE);
    } catch (MongoCursorException $e) {
      $this->error("Delete of data into MongoDB failed: {$e->getMessage()}", 500);
    }
  }

  /**   *  --------------------------------------------------------------------------------   * DELETE_ALL  * --------------------------------------------------------------------------------   *  * Delete all documents from the passed collection based upon certain criteria *  * @usage = $this->mongo_db->delete_all('foo', $data = array()); */
  public function delete_all($collection = "") {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection selected to delete from", 500);
    } try {
      $this->db->{$collection}->remove($this->wheres, array('fsync' => TRUE, 'justOne' => FALSE));
      return(TRUE);
    } catch (MongoCursorException $e) {
      $this->error("Delete of data into MongoDB failed: {$e->getMessage()}", 500);
    }
  }

  /**   *  --------------------------------------------------------------------------------   * ADD_INDEX  * --------------------------------------------------------------------------------   *  * Ensure an index of the keys in a collection with optional parameters. To set values to descending order,   * you must pass values of either -1, FALSE, 'desc', or 'DESC', else they will be  * set to 1 (ASC). *  * @usage = $this->mongo_db->add_index($collection, array('first_name' => 'ASC', 'last_name' => -1), array('unique' => TRUE));  */
  public function add_index($collection = "", $keys = array(), $options = array()) {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection specified to add index to", 500);
    } if (emptyempty($keys) || !is_array($keys)) {
      $this->error("Index could not be created to MongoDB Collection because no keys were specified", 500);
    } foreach ($keys as $col => $val) {
      if ($val == -1 || $val === FALSE || strtolower($val) == 'desc') {
        $keys[$col] = -1;
      } else {
        $keys[$col] = 1;
      }
    } if ($this->db->{$collection}->ensureIndex($keys, $options) == TRUE) {
      $this->clear();
      return($this);
    } else {
      $this->error("An error occured when trying to add an index to MongoDB Collection", 500);
    }
  }

  /**   *  --------------------------------------------------------------------------------   * REMOVE_INDEX   * --------------------------------------------------------------------------------   *  * Remove an index of the keys in a collection. To set values to descending order, * you must pass values of either -1, FALSE, 'desc', or 'DESC', else they will be  * set to 1 (ASC). *  * @usage = $this->mongo_db->remove_index($collection, array('first_name' => 'ASC', 'last_name' => -1));  */
  public function remove_index($collection = "", $keys = array()) {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection specified to remove index from", 500);
    } if (emptyempty($keys) || !is_array($keys)) {
      $this->error("Index could not be removed from MongoDB Collection because no keys were specified", 500);
    } if ($this->db->{$collection}->deleteIndex($keys, $options) == TRUE) {
      $this->clear();
      return($this);
    } else {
      $this->error("An error occured when trying to remove an index from MongoDB Collection", 500);
    }
  }

  /**   *  --------------------------------------------------------------------------------   * REMOVE_ALL_INDEXES  * --------------------------------------------------------------------------------   *  * Remove all indexes from a collection.  *  * @usage = $this->mongo_db->remove_all_index($collection);  */
  public function remove_all_indexes($collection = "") {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection specified to remove all indexes from", 500);
    } $this->db->{$collection}->deleteIndexes();
    $this->clear();
    return($this);
  }

  /**   *  --------------------------------------------------------------------------------   * LIST_INDEXES   * --------------------------------------------------------------------------------   *  * Lists all indexes in a collection.  *  * @usage = $this->mongo_db->list_indexes($collection);  */
  public function list_indexes($collection = "") {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection specified to remove all indexes from", 500);
    } return($this->db->{$collection}->getIndexInfo());
  }

  /**   *  --------------------------------------------------------------------------------   * DROP COLLECTION * --------------------------------------------------------------------------------   *  * Removes the specified collection from the database. Be careful because this   * can have some very large issues in production!  */
  public function drop_collection($collection = "") {
    if (emptyempty($collection)) {
      $this->error("No Mongo collection specified to drop from database", 500);
    } $this->db->{$collection}->drop();
    return TRUE;
  }

  /**   *  --------------------------------------------------------------------------------   * CLEAR  * --------------------------------------------------------------------------------   *  * Resets the class variables to default settings  */
  private function clear() {
    $this->selects = array();
    $this->wheres = array();
    $this->limit = NULL;
    $this->offset = NULL;
    $this->sorts = array();
  }

  /**   *  --------------------------------------------------------------------------------   * WHERE INITIALIZER  * --------------------------------------------------------------------------------   *  * Prepares parameters for insertion in $wheres array().  */
  private function where_init($param) {
    if (!isset($this->wheres[$param])) {
      $this->wheres[$param] = array();
    }
  }

  public function error($str, $t) {
    echo $str;
    exit;
  }

}

?>

使用范例:

$table_name=trim(strtolower($this->table_name));
$this->mongo_db->where($where);
$order=!emptyempty($order)?array('AID'=>'DESC'):array('AID'=>'ASC');//升序降序
$infos=$this->mongo_db->listinfo($table_name,$order,$page,$pagesize);

这篇文章就到这结束了,大家可以多学习一下

PHP 相关文章推荐
对squid中refresh_pattern的一些理解和建议
Apr 17 PHP
php对大文件进行读取操作的实现代码
Jan 23 PHP
PHP中可以自动分割查询字符的Parse_str函数使用示例
Jul 25 PHP
destoon实现调用自增数字从1开始的方法
Aug 21 PHP
php以post形式发送xml的方法
Nov 04 PHP
php图片处理函数获取类型及扩展名实例
Nov 19 PHP
PHP中文乱码解决方案
Mar 05 PHP
php使用gzip压缩传输js和css文件的方法
Jul 29 PHP
PHP7之Mongodb API使用详解
Dec 26 PHP
PHP实现递归目录的5种方法
Oct 27 PHP
PHP实现的AES加密、解密封装类与用法示例
Aug 02 PHP
php 中的信号处理操作实例详解
Mar 04 PHP
php批量转换文件夹下所有文件编码的函数类
Aug 06 #PHP
php mysql数据库操作类(实例讲解)
Aug 06 #PHP
PHP基于自定义类随机生成姓名的方法示例
Aug 05 #PHP
PHP实现腾讯与百度坐标转换
Aug 05 #PHP
laravel5.4生成验证码的实例讲解
Aug 05 #PHP
CakePHP框架Model函数定义方法示例
Aug 04 #PHP
CakePHP框架Model关联对象用法分析
Aug 04 #PHP
You might like
php flush无效,IIS7下php实时输出的方法
2016/08/25 PHP
PHP实现二维数组(或多维数组)转换成一维数组的常见方法总结
2019/12/04 PHP
php 下 html5 XHR2 + FormData + File API 上传文件操作实例分析
2020/02/28 PHP
PHP代码加密的方法总结
2020/03/13 PHP
学习ExtJS Column布局
2009/10/08 Javascript
javascript 面向对象继承
2009/11/26 Javascript
javascript 计算两个整数的百分比值
2009/12/26 Javascript
js关闭浏览器窗口及检查浏览器关闭事件
2013/09/03 Javascript
jquery实现的Banner广告收缩效果代码
2015/09/02 Javascript
JavaScript代码判断点击第几个按钮
2015/12/13 Javascript
浅析angularJS中的ui-router和ng-grid模块
2016/05/20 Javascript
SVG描边动画
2017/02/23 Javascript
使用Vue构建可重用的分页组件
2018/03/26 Javascript
JS中超越现实的匿名函数用法实例分析
2019/06/21 Javascript
vue实现滑动超出指定距离回顶部功能
2019/07/31 Javascript
vue-cli3配置与跨域处理方法
2019/08/17 Javascript
jQuery实现倒计时功能完整示例
2020/06/01 jQuery
javascript实现前端input密码输入强度验证
2020/06/24 Javascript
python实现杨辉三角思路
2017/07/14 Python
python 借助numpy保存数据为csv格式的实现方法
2018/07/04 Python
python 3.7.0 安装配置方法图文教程
2018/08/27 Python
便捷提取python导入包的属性方法
2018/10/15 Python
python网络编程 使用UDP、TCP协议收发信息详解
2019/08/29 Python
Html5 video标签视频的最佳实践
2020/02/26 HTML / CSS
CAT鞋英国官网:坚固耐用的靴子和鞋
2016/10/21 全球购物
Expedia爱尔兰:酒店、机票、租车及廉价假期
2017/01/02 全球购物
仓库管理专业个人的自我评价
2013/12/30 职场文书
跟单文员岗位职责
2014/01/03 职场文书
学术会议主持词
2014/03/17 职场文书
协议书模板
2014/04/23 职场文书
综治工作心得体会
2014/09/11 职场文书
大学生撤销处分思想汇报
2014/09/12 职场文书
民政局办理协议离婚(范本)
2014/10/25 职场文书
2016党员学习心得体会范文
2016/01/23 职场文书
《西门豹》教学反思
2016/02/23 职场文书
交通事故协议书范本
2016/03/19 职场文书