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:
$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 = $this->mongo_db->where_not_in('foo','zoo'))->get('foobar');
-
*/
public function where_not_in($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 = $this->mongo_db->where_between_ne('foo',30)->get('foobar');
-
*/
public function where_between_ne($field = '',$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 = "",'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,'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,'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 : $this->mongo_db->remove_index('foo','last_name' => -1))
*/
public function remove_index($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 : $this->mongo_db->remove_all_index('foo','last_name' => -1))
*/
public function remove_all_index($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 */
希望本文所述对大家的PHP程序设计有所帮助。