f-open in php file handling

file_exists not working php file_exits doesn't support remote URLs.

file_exists not working php file_exits doesn't support remote URLs. php file functions: if php file_exits not working. we can try this one if (fopen($fileexitesnotworking, "r")){ echo "file exits" }else { echo "not"; }

insert document in collection mongodb

Insert document in collection Two types of insert Insert single records: Insert multiple records Insert single records: syntax: db.collection.insertOne( <document>, { writeConcern: <document> } ) Example 1: db.users.insertOne({"name":"ram","email":"ram@gmail.com"}) Example 2: db.users.insertOne( [{"employee":{"name":"ram","email":"ram@gmail.com"}}] ) Insert multiple records: syntax : db.Collection_name.insertMany( [<document 1>, <document 2>, …], { writeConcern: <document>, ordered: <boolean> }) Example: db.users.insertMany([{"name":"ram","email":"ram@gmail.com"},{"name":"raju","email":"raju@gmail.com"}])

Collection Shell Commands in MongoDB

Create Collection Syntax: db.createCollection("Collection Name"); Example: db.createCollection("users"); Delete collection in Mongodb Shell Command db.collection.drop() Find Collection in Mongodb Shell Command db.collection.find() Show all Collection in Mongodb Shell Command show collections Creat Collection in Mongodb Shell Command db.createCollection("users") Rename the Collection In Mongodb Shell Command db.collection.renameCollection() Update the single document in MongoDB collections Shell Command db.collection.updateOne() Updates all the documents in MongoDB collections that match the given query. db.collection.updateMany() Replaces the first matching document in MongoDB collection db.collection.replaceOne() Deletes the first document in Mongodb collection db.collection.deleteOne() db.collection.deleteMany()

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