📜  MongoDB-PHP

📅  最后修改于: 2020-11-27 06:00:15             🧑  作者: Mango


要将MongoDB与PHP一起使用,您需要使用MongoDB PHP驱动程序。从URL下载PHP驱动程序中下载驱动程序。确保下载最新版本。现在解压缩存档并将php_mongo.dll放入您的PHP扩展目录(默认为“ ext”),并将以下行添加到php.ini文件中-

extension = php_mongo.dll

建立连接并选择数据库

要建立连接,您需要指定数据库名称,如果该数据库不存在,则MongoDB会自动创建它。

以下是连接到数据库的代码片段-

mydb;
    
   echo "Database mydb selected";
?>

执行程序时,将产生以下结果-

Connection to database successfully
Database mydb selected

创建收藏

以下是创建集合的代码片段-

mydb;
   echo "Database mydb selected";
   $collection = $db->createCollection("mycol");
   echo "Collection created succsessfully";
?>

执行程序时,将产生以下结果-

Connection to database successfully
Database mydb selected
Collection created succsessfully

插入文件

要将文档插入MongoDB,请使用insert()方法。

以下是插入文档的代码片段-

mydb;
   echo "Database mydb selected";
   $collection = $db->mycol;
   echo "Collection selected succsessfully";
    
   $document = array( 
      "title" => "MongoDB", 
      "description" => "database", 
      "likes" => 100,
      "url" => "http://www.tutorialspoint.com/mongodb/",
      "by" => "tutorials point"
   );
    
   $collection->insert($document);
   echo "Document inserted successfully";
?>

执行程序时,将产生以下结果-

Connection to database successfully
Database mydb selected
Collection selected succsessfully
Document inserted successfully

查找所有文件

要从集合中选择所有文档,请使用find()方法。

以下是选择所有文档的代码片段-

mydb;
   echo "Database mydb selected";
   $collection = $db->mycol;
   echo "Collection selected succsessfully";
   $cursor = $collection->find();
   // iterate cursor to display title of documents
    
   foreach ($cursor as $document) {
      echo $document["title"] . "\n";
   }
?>

执行程序时,将产生以下结果-

Connection to database successfully
Database mydb selected
Collection selected succsessfully {
   "title": "MongoDB"
}

更新文件

要更新文档,您需要使用update()方法。

在以下示例中,我们将插入文档的标题更新为MongoDB Tutorial 。以下是更新文档的代码片段-

mydb;
   echo "Database mydb selected";
   $collection = $db->mycol;
   echo "Collection selected succsessfully";
   // now update the document
   $collection->update(array("title"=>"MongoDB"), 
      array('$set'=>array("title"=>"MongoDB Tutorial")));
   echo "Document updated successfully";
    
   // now display the updated document
   $cursor = $collection->find();
    
   // iterate cursor to display title of documents
   echo "Updated document";
    
   foreach ($cursor as $document) {
      echo $document["title"] . "\n";
   }
?>

执行程序时,将产生以下结果-

Connection to database successfully
Database mydb selected
Collection selected succsessfully
Document updated successfully
Updated document {
   "title": "MongoDB Tutorial"
}

删除文件

要删除文档,您需要使用remove()方法。

在以下示例中,我们将删除标题为MongoDB Tutorial的文档。以下是删除文档的代码片段-

mydb;
   echo "Database mydb selected";
   $collection = $db->mycol;
   echo "Collection selected succsessfully";
   
   // now remove the document
   $collection->remove(array("title"=>"MongoDB Tutorial"),false);
   echo "Documents deleted successfully";
   
   // now display the available documents
   $cursor = $collection->find();
    
   // iterate cursor to display title of documents
   echo "Updated document";
    
   foreach ($cursor as $document) {
      echo $document["title"] . "\n";
   }
?>

执行程序时,将产生以下结果-

Connection to database successfully
Database mydb selected
Collection selected successfully
Documents deleted successfully

在上面的示例中,第二个参数是布尔类型,用于remove()方法的justOne字段。

其余MongoDB方法findOne(),save(),limit(),skip(),sort()等的工作原理与上述相同。