phponlinetutorial

 Delete the collection in mongodb:  Syntex: use database; db.collectionName.drop(); this commend delete the collection in mongodb.  Example:  db.products.drop();

 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"}])

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()

  Create Database Shell Command Syntax:    use databaseName Example:  use newproject  Description: "use database" syntax to create the database in MongoDB. if database exists switch to that database. Show Databases Shell  Command show dbs Delete Database Shell Command db.dropDatabase() 

Amazing features of php7 versions  1. Increase the performance. 2. Standalone Multi-threading Web Server 3.Just in time compilation 4. Abstract syntax tree  

in order to send multiple recipients mail configuration in codeigniter we can  add the changes n config file. $config[''bcc_batch_mode"]="TRUE"; $config["bcc_batch_size"]="none";