本篇文章给人人带来的内容是关于mongodb和php的用法引见（代码示例），有肯定的参考价值，有须要的朋侪能够参考一下，愿望对你有所协助。
Mognodb数据库衔接.
默许花样
$m = new Mongo(); //这里采纳默许衔接本机的27017端口，固然也能够衔接长途主机如 192.168.0.4:27017,假如端口是27017，端口能够省略。
规范衔接
$m = new Mongo("mongodb://${username}:${password}@localhost");
实例：
$m = new Mongo("mongodb://127.0.0.1:27017/admin:admin");
数据库的用户名和暗码都是admin
数据库操纵
插进去数据
<?php
//这里采纳默许衔接本机的27017端口，固然你也能够衔接长途主机如192.168.0.4:27017
//假如端口是27017，端口能够省略
$m = new Mongo("mongodb://127.0.0.1:27017/admin:admin");
//挑选comedy数据库，假如之前没该数据库会自动建立，也能够用$m->selectDB("comedy");
$db = $m->comedy;
//挑选comedy内里的collection鸠合，相当于RDBMS内里的表，也能够运用
$collection = $db->collection;
$db->selectCollection("collection");
/*********增添一个元素**************/
$obj = array("title" => "php1", "author" => "Bill Watterson");
//将$obj 增添到$collection 鸠合中
$collection->insert($obj);
/*********增添另一个元素**************/
$obj = array("title" => "huaibei", "online" => true);
$collection->insert($obj);
//$query = array("title" => "huaibei");
$query = array( "_id" => $obj['_id'] );
$cursor = $collection->find($query);
//遍历一切鸠合中的文档
foreach ($cursor as $obj) {
echo $obj["title"] . "\n";
echo $obj["_id"] . "\n";
}
//断开MongoDB衔接
$m->close();
带前提的查询
mysql: id = 123 mongo: array(‘id’=>123) mysql: name link ’%bar%’ mongo: array(‘name’ => new MongoRegex(‘/.*bar.*/i’)) mysql: where id > 10 mongo: array(‘id’ => array(‘$gt’ => 10)) mysql: where id >= 10 mongo: array(‘id’ => array(‘$gte’ => 10)) mysql: where id < 10 mongo: array(‘id’ => array(‘$lt’ => 10)) mysql: where id <= 10 mongo: array(‘id’ => array(‘$lte’ => 10)) mysql: where id > 1 and id < 10 mongo: array(‘id’ => array(‘$gt’ => 1,’$lt’ => 10)) mysql: where id <> 10 mongo: array(‘id’ => array(‘$ne’ => 10)) mysql: where id in(123) mongo: array(‘id’ => array(‘$in’ => array(1,2,3))) mysql: where id not in(123) mongo: array(‘id’ => array(‘$nin’ => array(1,2,3))) mysql: where id = 2 or id = 9 mongo: array(‘id’ => array(‘$or’ => array(array(‘id’=>2),array(‘id’=>9)))) mysql: order by name asc mongo: array(‘sort’=>array(‘name’=>1)) mysql: order by name desc mongo: array(‘sort’=>array(‘name’=>-1)) mysql: limit 0,2 mongo: array(‘limit’=>array(‘offset’=>0,’rows’=>2)) mysql: select name,email mongo: array(‘name’,'email’) mysql: select count(name) mongo: array(‘COUNT’) //注重：COUNT为大写
查询时，每一个Object插进去时都邑自动生成一个奇特的_id,它相当于RDBMS中的主键，用于查询时异常轻易 （_id每一都差别，很像自动增添的id）
<?php
$param = array("name" => "joe");
$collection->insert($param);
$joe = $collection->findOne(array("_id" => $param['_id']));
print_R($joe);
$m->close();
返回效果：Array ( [_id] => MongoId Object ( [$id] => 4fd30e21870da83416000002 ) [name] => joe )
变动字段值
<?php
$sign = array("title" => 'php1');
$param = array("title" => 'php1','author'=>'test');
$joe = $collection->update($sign, $param);
删除一个数据库
$m -> dropDB(“comedy”);
列出一切可用数据库
$m->listDBs(); //无返回值
建立一个MongoDB对象
<?php $mo = new Mongo(); $db = new MongoDB($mo,’dbname’);//经由过程建立体式格局取得一个MongoDB对象
删除当前DB
<?php $db = $mo->dbname; $db->drop();
取得当前数据库名
<?php $db = $mo->dbname; $db->_tostring();
挑选想要的collection:
//A: $mo = new Mongo(); $coll = $mo->dbname->collname;//取得一个collection对象 //B： $db = $mo->selectDB(’dbname’); $coll = $db->collname; //C: $db = $mo->dbname; $coll = $db->collname; //D: $db = $mo->dbname; $coll = $db->selectCollectoin(’collname’);//取得一个collection对象
插进去数据（MongoCollection对象
$coll = $mo->db->foo; $a = array(’a’=>’b’); $options = array(’safe’=>true); $rs =$coll->insert($a,$options);
删除数据库中的纪录（MongoCollection对象）
$coll = $mo->db->coll; $c = array(’a’=>1,’s’=>array(’$lt’=>100)); $options = array(’safe’=>true); $rs = $coll->remove($c,$options);
更新数据库中的纪录（MongoCollection对象）
$coll = $mo->db->coll; $c = array(’a’=>1,’s’=>array(’$lt’=>100)); $newobj = array(’e’=>’f’,’x’=>’y’); $options = array(’safe’=>true,’multiple’=>true); $rs = $coll->remove($c,$newobj,$options);
查询collection取得单条纪录（MongoCollection类）
$coll = $mo->db->coll; $query = array(’s’=>array(’$lt’=>100)); $fields = array(’a’=>true,’b’=>true); $rs = $coll->findOne($query,$fields);
查询collection取得多条纪录（MongoCollection类）
$coll = $mo->db->coll; $query = array(’s’=>array(’$lt’=>100)); $fields = array(’a’=>true,’b’=>true); $cursor = $coll->find($query,$fields); //排序 $cursor->sort(array(‘字段’=>-1));(-1倒序，1正序) //跳过部份纪录 $cursor->skip(100);跳过100行 //只显示部份纪录 $cursor->limit(100);只显示100行 返回一个游标纪录对象MongoCursor。
针对游标对象MongoCursor的操纵(MongoCursor类)
$cursor = $coll->find($query,$fields);
while($cursor->hasNext()){
$r = $cursor->getNext();
var_dump($r);
}
//或许
$cursor = $coll->find($query,$fields);
foreache($cursor as $k=>$v){
var_dump($v);
}
//或许
$cursor = $coll->find($query,$fields);
$array= iterator_to_array($cursor);
本篇文章到这里就已悉数完毕了，更多其他精彩内容能够关注ki4网的mongodb视频教程栏目！
以上就是mongodb和php的用法引见（代码示例）的细致内容，更多请关注ki4网别的相干文章！
