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,确保下载最新版本,现在解压缩并将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
连接数据库
要创建连接,您需要指定数据库名称,如果数据库不存在,则MongoDB会自动创建它。
以下是连接到数据库的代码片段-
<?php //连接到MongoDB. $m = new MongoClient(); echo "Connection to database successfully"; //选择一个数据库 $db = $m->mydb; echo "Database mydb selected"; ?>
执行程序时,将产生以下输出-
Connection to database successfully Database mydb selected
创建集合
以下是创建集合的代码片段-
<?php //连接到MongoDB. $m = new MongoClient(); echo "Connection to database successfully"; //选择一个数据库 $db = $m->mydb; echo "Database mydb selected"; $collection = $db->createCollection("mycol"); echo "Collection created succsessfully"; ?>
执行程序时,将产生以下输出-
Connection to database successfully Database mydb selected Collection created succsessfully
插入数据
要将文档插入MongoDB,请使用 insert()方法。
<?php //连接到MongoDB. $m = new MongoClient(); echo "Connection to database successfully"; //选择一个数据库 $db = $m->mydb; echo "Database mydb selected"; $collection = $db->mycol; echo "Collection selected succsessfully"; $document = array( "title" => "MongoDB", "description" => "database", "likes" => 100, "url" => "http://www.learnfk.com/mongodb/", "by" => "Learnfk point" ); $collection->insert($document); echo "Document inserted successfully"; ?>
执行程序时,将产生以下输出-
Connection to database successfully Database mydb selected Collection selected succsessfully Document inserted successfully
查找数据
要从集合中选择所有文档,请使用find()方法。
<?php //连接到MongoDB. $m = new MongoClient(); echo "Connection to database successfully"; //选择一个数据库 $db = $m->mydb; echo "Database mydb selected"; $collection = $db->mycol; echo "Collection selected succsessfully"; $cursor = $collection->find(); //迭代游标以显示文档的标题 foreach ($cursor as $document) { echo $document["title"] . "\n"; } ?>
执行程序时,将产生以下输出-
Connection to database successfully Database mydb selected Collection selected succsessfully { "title": "MongoDB" }
更新数据
要更新文档,您需要使用update()方法。
在以下示例中,无涯教程将插入文档的标题更新为 MongoDB Tutorial 。
<?php //连接到MongoDB. $m = new MongoClient(); echo "Connection to database successfully"; //选择一个数据库 $db = $m->mydb; echo "Database mydb selected"; $collection = $db->mycol; echo "Collection selected succsessfully"; //现在更新文档 $collection->update(array("title"=>"MongoDB"), array('$set'=>array("title"=>"MongoDB Tutorial"))); echo "Document updated successfully"; //现在显示更新的文档 $cursor = $collection->find(); //迭代游标以显示文档的标题 echo "Updated document"; foreach ($cursor as $document) { echo $document["title"] . "\n"; } ?>
执行程序时,将产生以下输出-
Connection to database successfully Database mydb selected Collection selected succsessfully Document updated successfully Updated document { "title": "MongoDB Tutorial" }
删除数据
要删除文档,您需要使用remove()方法。
在以下示例中,无涯教程将删除标题为 MongoDB Tutorial 的文档。
<?php //连接到MongoDB. $m = new MongoClient(); echo "Connection to database successfully"; //选择一个数据库 $db = $m->mydb; echo "Database mydb selected"; $collection = $db->mycol; echo "Collection selected succsessfully"; //现在删除该文件 $collection->remove(array("title"=>"MongoDB Tutorial"),false); echo "Documents deleted successfully"; //现在显示可用的文件 $cursor = $collection->find(); //迭代游标以显示文档的标题 echo "Updated document"; foreach ($cursor as $document) { echo $document["title"] . "\n"; } ?>
执行程序时,将产生以下输出-
Connection to database successfully Database mydb selected Collection selected succsessfully 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。
参考链接
https://www.learnfk.com/mongodb/mongodb-php.html
标签:successfully,Database,MongoDB,selected,无涯,echo,PHP,mydb From: https://blog.51cto.com/u_14033984/8182050