PHP連接MongoDB操作

要使用PHP與MongoDB交互存儲數據,需要使用MongoDB PHP驅動程序(http://pecl.php.net/package/mongo)。。) 從url下載驅動程序下載PHP驅動程序並確保下載的是正確的版本(如在本示例中:Win10 64位下載的版本是:php_mongo-1.6.8-5.6-ts-vc11-x64.zip)。 現在解壓縮存檔並將php_mongo.dll放入PHP擴展目錄(默認爲「ext」),並將以下行添加到php.ini文件中 -

extension = php_mongo.dll

然後重新啓動 Apache 服務器,查看 phpinfo() 函數的輸出結果 -

PHP連接MongoDB操作

進行連接並選擇數據庫

要進行連接,需要指定數據庫名稱,如果數據庫不存在,那麼MongoDB會自動創建它。

以下是連接到數據庫的代碼片段 -

<?php
   // connect to mongodb
   $m = new MongoClient();

   echo "Connection to database successfully<br/>";
   // select a database
   $db = $m->mydb;

   echo "Database mydb selected";
?>

執行程序時,會產生以下結果 -

Connection to database successfully
Database mydb selected

創建一個集合

以下是創建集合的代碼片段 -

<?php
   // connect to mongodb
   $m = new MongoClient();
   echo "Connection to database successfully";

   // select a database
   $db = $m->mydb;
   echo "Database mydb selected";
   $collection = $db->createCollection("phpcol");
   echo "Collection created succsessfully";
?>

執行程序時,會產生以下結果 -

Connection to database successfully
Database mydb selected
Collection created succsessfully

插入文檔

要將文檔插入到MongoDB中,請使用insert()方法。
以下是插入文檔的代碼片段 -

<?php
   // connect to mongodb
   $m = new MongoClient();
   echo "Connection to database successfully";

   // select a database
   $db = $m->mydb;
   echo "Database mydb selected";
   $collection = $db->phpcol;
   echo "Collection selected succsessfully";

   $document = array( 
      "title" => "MongoDB", 
      "description" => "database", 
      "likes" => 100,
      "url" => "http://www.yiibai.com/mongodb/",
      "by", "tutorials point"
   );

   $collection->insert($document);
   echo "Document inserted successfully";
?>

執行程序時,會產生以下結果 -

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

查找所有文件

要從集合中選擇所有文檔,請使用find()方法。


<?php
   // connect to mongodb
   $m = new MongoClient();
   echo "Connection to database successfully";

   // select a database
   $db = $m->mydb;
   echo "Database mydb selected";
   $collection = $db->phpcol;
   echo "Collection selected succsessfully";

   $cursor = $collection->find();
   // iterate cursor to display title of documents

   foreach ($cursor as $document) {
      echo $document["title"]. ', URL is=> ' .$document["url"] .  "
";
   }
?>

以下是選擇所有文檔的代碼片段 -

Connection to database successfully
Database mydb selected
Collection selected succsessfully 
MongoDB, URL is=> http://www.yiibai.com/mongodb/

更新文檔

要更新文檔,需要使用update()方法。

在下面的例子中,將把插入的文檔的標題更新爲:MongoDB教程 。 以下是更新文檔的代碼段 -

<?php
   // connect to mongodb
   $m = new MongoClient();
   echo "Connection to database successfully";

   // select a database
   $db = $m->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教程")));
   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 $document["title"] .', URL => '.$document["url"] . "
";
   }
?>

以下是選擇所有文檔的代碼片段 -

Connection to database successfully
Database mydb selected
Collection selected succsessfully 
MongoDB, URL is=> http://www.yiibai.com/mongodb/

刪除文檔

要刪除文檔,可使用remove()方法。

在下面的示例中,將刪除標題爲:MongoDB教程 的文檔。 以下是刪除文檔的代碼片段 -

<?php
   // connect to mongodb
   $m = new MongoClient();
   echo "Connection to database successfully";

   // select a database
   $db = $m->mydb;
   echo "Database mydb selected";
   $collection = $db->phpcol;
   echo "Collection selected succsessfully";

   // now remove the document
   $collection->remove(array("title"=>"MongoDB教程"),false);
   echo "Documents deleted successfully";

   // now display the available documents
   $cursor = $collection->find();

   foreach ($cursor as $document) {
      echo $document["title"] . "
";
   }
?>

以下是選擇所有文檔的代碼片段 -

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

在上面的例子中,第二個參數是布爾類型,用於remove()方法的justOne字段。
其餘的MongoDB方法findOne()save()limit()skip()sort()等與上述相同。

由於此篇教程文章是一個入門級的教程文章,只是講解有關簡單入門的操作,有關更高級的內容,請參考:http://docs.mongodb.com/php-library/