数据库 - PHP读写MongoDB,shell读写MongoDB,兵分两路操作,怎么数据还是相互隔离的?
首先启动mongod服务器;
打开一个shell客户端:
use haha
db.haha.insert({'a':'aaa'})
db.haha.find()
{'a':'aaa'} // 添加成功了
打开另一个shell客户端:
use haha
db.haha.find() // 确认一下刚才的输入
{'a':'aaa'} // 果然有效
可以看到,shell客户端里是有效果的。
下面是php代码:
$m = new MongoClient();
$jihe = $m->db->haha;$cursor = $jihe->find();
foreach($cursor as $item){
var_dump($item); //什么都没有,空数据
}
然后修改php代码为:
$m = new MongoClient();
$jihe = $m->db->haha;
$doc = array('b'=>'bbb');
$jihe->insert($doc); // php自己试着插入数据
$cursor = $jihe->find();
foreach($cursor as $item){
var_dump($item); //这次仅有 {'b':'bbb'}数据,没有shell里面设置的{'a':'aaa'}
}
这是怎么回事呢?都是针对同一个数据库发起的操作啊。shell客户端和php访问,怎么有如此差异?
回复内容:
首先启动mongod服务器;
打开一个shell客户端:
use haha
db.haha.insert({'a':'aaa'})
db.haha.find()
{'a':'aaa'} // 添加成功了
打开另一个shell客户端:
use haha
db.haha.find() // 确认一下刚才的输入
{'a':'aaa'} // 果然有效
可以看到,shell客户端里是有效果的。
下面是php代码:
$m = new MongoClient();
$jihe = $m->db->haha;$cursor = $jihe->find();
foreach($cursor as $item){
var_dump($item); //什么都没有,空数据
}
然后修改php代码为:
$m = new MongoClient();
$jihe = $m->db->haha;
$doc = array('b'=>'bbb');
$jihe->insert($doc); // php自己试着插入数据
$cursor = $jihe->find();
foreach($cursor as $item){
var_dump($item); //这次仅有 {'b':'bbb'}数据,没有shell里面设置的{'a':'aaa'}
}
这是怎么回事呢?都是针对同一个数据库发起的操作啊。shell客户端和php访问,怎么有如此差异?
推测:shell连的是haha
,php连的是db
,这是2个数据库空间。
打开一个shell客户端,输入命令
<code>show dbs </code>
输出结果除了haha,是不是还有一个db?如果是Yes
<code>$jihe = $m->db->haha; </code>
应该改为
<code>$jihe = $m->haha->haha; </code>
如果是No,(摊手)php多年没碰了。
确认你连的是同一个服务器,同一个数据库

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