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mongodb php，mongodb_PHP教程

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Libérer： 2016-07-12 08:59:05

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mongodb php，mongodb

首先安装扩展，然后才能使用mongodb

一、连接数据库

<span>try</span><span> {
    </span><span>$mongo</span> = <span>new</span><span> MongoClient();
    </span><span>$db</span> = <span>$mongo</span>-><span>mydb;
    </span><span>var_dump</span>(<span>$db</span><span>);
} </span><span>catch</span> (MongoConnectionException <span>$e</span><span>) {
    </span><span>echo</span> <span>$e</span>-><span>getMessage();
}</span>

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该代码可以连接mydb数据库，如果该数据库不存在则自动创建。

二、创建集合

<span>try</span><span> {
    </span><span>$mongo</span> = <span>new</span><span> MongoClient();
    </span><span>$db</span> = <span>$mongo</span>-><span>mydb;
    </span><span>$mycol</span> = <span>$db</span>->createCollection('mycol'<span>);
    </span><span>var_dump</span>(<span>$mycol</span><span>);
} </span><span>catch</span> (MongoConnectionException <span>$e</span><span>) {
    </span><span>echo</span> <span>$e</span>-><span>getMessage();
}</span>

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该代码可以创建集合mycol。

三、插入文档

mongodb中使用insert()来插入文档。

<span>try</span><span> {
    </span><span>$mongo</span> = <span>new</span><span> MongoClient();
    </span><span>$db</span> = <span>$mongo</span>-><span>mydb;
    </span><span>$mycol</span> = <span>$db</span>-><span>mycol;

    </span><span>$document</span> = <span>array</span>('name' => 'test1' , 'sex' => 'formale' , 'age' => 20<span>);
    </span><span>$res</span> = <span>$mycol</span>->insert(<span>$document</span><span>);
    </span><span>var_dump</span>(<span>$res</span><span>);
} </span><span>catch</span> (MongoConnectionException <span>$e</span><span>) {
    </span><span>echo</span> <span>$e</span>-><span>getMessage();
}</span>

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输出：

<span>array</span> (size=4<span>)
  </span>'ok' => <span>float</span> 1
  'n' => int 0
  'err' => <span>null</span>
  'errmsg' => <span>null</span>

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四、查找文档

mongodb使用find()来查找文档

<span>try</span><span> {
    </span><span>$mongo</span> = <span>new</span><span> MongoClient();
    </span><span>$db</span> = <span>$mongo</span>-><span>mydb;
    </span><span>$mycol</span> = <span>$db</span>-><span>mycol;

    </span><span>$mongoCursor</span> = <span>$mycol</span>-><span>find();
    </span><span>foreach</span> (<span>$mongoCursor</span> <span>as</span> <span>$document</span><span>) {
        </span><span>var_dump</span>(<span>$document</span><span>);
    }
} </span><span>catch</span> (MongoConnectionException <span>$e</span><span>) {
    </span><span>echo</span> <span>$e</span>-><span>getMessage();
}</span>

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结果：

<span>array</span> (size=4<span>)
  </span>'_id' => 
    <span>object</span>(MongoId)[7<span>]
      </span><span>public</span> '$id' => <span>string</span> '56c28a793b22cf5415000029' (length=24<span>)
  </span>'name' => <span>string</span> 'test1' (length=5<span>)
  </span>'sex' => <span>string</span> 'formale' (length=7<span>)
  </span>'age' => int 20

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五、更新文档

使用update()来更新文档

<span>try</span><span> {
    </span><span>$mongo</span> = <span>new</span><span> MongoClient();
    </span><span>$db</span> = <span>$mongo</span>-><span>mydb;
    </span><span>$mycol</span> = <span>$db</span>-><span>mycol;

    </span><span>$mycol</span>->update(<span>array</span>('name'=>'test1') , <span>array</span>('$set'=><span>array</span>('age' => 21<span>)));
    </span><span>$mongoCursor</span> = <span>$mycol</span>-><span>find();
    </span><span>foreach</span> (<span>$mongoCursor</span> <span>as</span> <span>$document</span><span>) {
        </span><span>var_dump</span>(<span>$document</span><span>);
    }
} </span><span>catch</span> (MongoConnectionException <span>$e</span><span>) {
    </span><span>echo</span> <span>$e</span>-><span>getMessage();
}</span>

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结果

<span>array</span> (size=4<span>)
  </span>'_id' => 
    <span>object</span>(MongoId)[7<span>]
      </span><span>public</span> '$id' => <span>string</span> '56c28a793b22cf5415000029' (length=24<span>)
  </span>'name' => <span>string</span> 'test1' (length=5<span>)
  </span>'sex' => <span>string</span> 'formale' (length=7<span>)
  </span>'age' => int 21

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六、删除文档

<span>try</span><span> {
    </span><span>$mongo</span> = <span>new</span><span> MongoClient();
    </span><span>$db</span> = <span>$mongo</span>-><span>mydb;
    </span><span>$mycol</span> = <span>$db</span>-><span>mycol;

    </span><span>$mycol</span>->remove(<span>array</span>('name'=>'test1'<span>));
    </span><span>$mongoCursor</span> = <span>$mycol</span>-><span>find();
    </span><span>foreach</span> (<span>$mongoCursor</span> <span>as</span> <span>$document</span><span>) {
        </span><span>var_dump</span>(<span>$document</span><span>);
    }
} </span><span>catch</span> (MongoConnectionException <span>$e</span><span>) {
    </span><span>echo</span> <span>$e</span>-><span>getMessage();
}</span>

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remove方法

<span>public</span> bool|<span>array</span> MongoCollection::remove ([ <span>array</span> <span>$criteria</span> = <span>array</span>() [, <span>array</span> <span>$options</span> = <span>array</span>() ]] )

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options删除的选项：

“w”:抛出异常的级别，默认是1；

“justOne”：最多只删除一个匹配的记录；

“fsync”：Boolean, defaults to FALSE. Forces the insert to be synced to disk before returning success. If TRUE, an acknowledged insert is implied and will override setting w to 0.

“timeout”：Integer, defaults to MongoCursor::$timeout. If "safe" is set, this sets how long (in milliseconds) for the client to wait for a database response. If the database does not respond within the timeout period, aMongoCursorTimeoutException will be thrown.

......

其他方法可参见php手册：http://php.net/manual/zh/book.mongo.php