在php中使用mongodb你必须使用 mongodb的php驱动。
MongoDB PHP在各平台上的安装及驱动包下载请查看: PHP安装MongoDB扩展驱动
为了确保正确连接,你需要指定数据库名,如果数据库在mongoDB中不存在,mongoDB会自动创建
代码片段如下:
<?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";
?>
执行以上程序,输出结果如下:
Connection to database successfully
Database mydb selected
创建集合的代码片段如下:
<?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";
?>
执行以上程序,输出结果如下:
Connection to database successfully
Database mydb selected
Collection created succsessfully
在mongoDB中使用 insert() 方法插入文档:
插入文档代码片段如下:
<?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" => "//www.w3cschool.cn/mongodb/",
"by", "w3cschool.cn"
);
$collection->insert($document);
echo "Document inserted successfully";
?>
执行以上程序,输出结果如下:
Connection to database successfully
Database mydb selected
Collection selected succsessfully
Document inserted successfully
使用find() 方法来读取集合中的文档。
读取使用文档的代码片段如下:
<?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 = $collection->find();
// 迭代显示文档标题
foreach ($cursor as $document) {
echo $document["title"] . "\n";
}
?>
执行以上程序,输出结果如下:
Connection to database successfully
Database mydb selected
Collection selected succsessfully
{
"title": "MongoDB"
}
使用 update() 方法来更新文档。
以下实例将更新文档中的标题为' MongoDB Tutorial', 代码片段如下:
<pre>
<?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";
// 更新文档
$collection->update(array("title"=>"MongoDB"), array('$set'=>array("title"=>"MongoDB Tutorial")));
echo "Document updated successfully";
// 显示更新后的文档
$cursor = $collection->find();
// 循环显示文档标题
echo "Updated document";
foreach ($cursor as $document) {
echo $document["title"] . "\n";
}
?>
执行以上程序,输出结果如下:
Connection to database successfully
Database mydb selected
Collection selected succsessfully
Document updated successfully
Updated document
{
"title": "MongoDB Tutorial"
}
使用 remove() 方法来删除文档。
以下实例中我们将移除 'title' 为 'MongoDB Tutorial' 的数据记录。, 代码片段如下:
<?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";
// 移除文档
$collection->remove(array("title"=>"MongoDB Tutorial"),false);
echo "Documents deleted successfully";
// 显示可用文档数据
$cursor = $collection->find();
// iterate cursor to display title of documents
echo "Updated document";
foreach ($cursor as $document) {
echo $document["title"] . "\n";
}
?>
执行以上程序,输出结果如下:
Connection to database successfully
Database mydb selected
Collection selected succsessfully
Documents deleted successfully
除了以上实例外,在php中你还可以使用findOne(), save(), limit(), skip(), sort()等方法来操作Mongodb数据库。