PHP Course For Beginners > CRUD Operation in PHP

Log in Operation

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Overview

A log in operation is the verification of a user's credentials in order to acquire system access. Typically, this is accomplished by inputting a username and password, although alternative ways are also acceptable. Typically, a logged-in user will have access to a wider variety of features and capabilities than an unlogged-in user. PHP is a popular, open-source programming language that is well suited to web development and can be integrated in HTML.

In order to configure a login process with PHP, you must first create a file named "login.php." This file contains both the HTML and PHP code for the login form. There should be two fields on the login form: a username field and a password field. When the form is submitted, the username and password should be delivered to the login.php file.

In the login.php file, PHP code will validate the entered username and password. If so, the user will be sent to a welcome page. Otherwise, an error message is displayed. The welcome page may be anything you desire, from a basic page with a greeting to a more complicated page containing account details.

How can I make learn vern.com login ?

Assuming that you already have a PHP script capable of handling login requests, the steps below detail how to configure login functionality:

1. Ensure that the method of your form is set to "post" and that its action attribute points to the PHP script that will handle the login request. Retrieve the values of the username and password fields from the $_POST superglobal in the PHP script.

2. Validate the login and password by comparing them to a database entry. If so, a session variable should be set to indicate that the user is logged in.

3. Forward the user to the specified page, such as the homepage or a members-only section.

4. On successive page loads, determine if the user is logged in by examining the session variable's value. If the user is not currently logged in, redirect them to the login page.

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php session_start(); include "db. php"; $username = $_POST["username"]; $password = $_POST["password"]; $sql = "SELECT email, password FROM users WHERE email = '$username' and password = md5('$password')"; $result = mysql_query($sql, $link); if($result == false) { echo 'User is not logged in'; }

  • How to Get Started Before we establish our secure login system, there are a few things we need to do.
  • Making a design for the login form.
  • Setting up Tables and Creating the Database
  • Using PHP to Authenticate Users
  • Making the Home Page is the first step.
  • The Profile Page is being built.
  • The Logout Script is being written.

  • The first step is to create the login form. Create a file called "login. php" and paste the code below into it.
  • Creating the Welcome Page is the second step. Here is the code for our website "Thank you for visiting.
  • Creating the Logout Script is the third step. Let's make a new one now "logoff

You can create a table called userLoginStatus with fields like clockIn time and clockOut time, and then enter the current time in the clockIn and clockOut fields. When a user logs in, leave the clockOut time blank; it should only be updated when the user clicks the logout button. This allows you to monitor a specific user's current state.

In PHP, logging in is a straightforward process. Simply construct a form that accepts a login and password, and then utilise the PHP $_POST variable to retrieve the form's information. Once you have the values, you may compare them to a user database to determine whether the credentials are valid. If so, the user can be logged in and granted access to the site. If not, an error message might be displayed.

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Reviews

S
Sonu sonu
5

very good

I
Islam Web
5

Nice

R
Ravi Ranjan Tiwari
5

I am very happy that I am studying from LearnVern.

M
Muhammad Talha
5

help full.

P
Prince Bavishi
5

nice work

S
sonakshi Raj
4

Excellent

S
Shibu Kumari
5

Very Good

R
Rajiv Kumar Singh
4

It would have been better if you could have provided the resource/source_code files of the CRUD operations so that we could have cross verified our code with yours.

D
Dravinanshu Mishra
5

Excellent for Bigners.

A
Awais Khan
5

Thanks

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Course Content

  1. Introduction to PHP
    10m 23s
  2. Understanding SDLC Process
    13m 58s
  3. How to use LearnVern
    3m 20s
  4. Client Server Architecture
    5m 18s
  5. How to set up PHP Environment?
    18m 6s

  1. What is Data
    8m 57s
  2. What is Database
    3m 25s
  3. What is DBMS
    14m 25s
  4. SQL Queries and its types
    16m 57s
  5. Data Types in SQL - from 16
    22m 41s
  6. SQL constraints
    10m 52s
  7. Create, Drop & Show Database
    13m 40s
  8. SQL Create Table
    13m 53s
  9. SQL Insert & Select Statement
    26m 56s
  10. Operators in SQL
    6m 47s
  11. In & NOt in Condition
    7m 4s
  12. Null & Not Null Condition
    4m 55s
  13. Clauses in SQL
    9m 46s
  14. Understanding Having, Distinct & Group by
    21m 54s
  15. Update & Delete in SQL
    12m
  16. Alter table command in SQL
    15m 29s
  17. MySQL Rename truncate Drop
    6m 34s
  18. Understanding Foreign key
    15m 37s
  19. MySQL joins
    22m 56s
  20. MySQL views
    18m 23s
  21. MySQL Function
    21m 39s
  22. MySQL Procedure
    15m 33s
  23. MySQL Trigger
    16m 15s
  24. Normalization
    16m 9s
  25. Assignment : MYSQL
    8m 56s

  1. Understanding HTTP Methods
    33m 26s

  1. Understanding PHP Program structure Comments in PHP
    13m 7s

  1. Variables in PHP
    11m 46s

  1. Arithmetic & Assignment Operators in PHP
    24m 28s
  2. Comparison & Logical Operators in PHP
    33m 17s
  3. Ternary Operator in PHP
    14m 38s
  4. Assignment : Operators
    1m 22s

  1. Super Global Variable in PHP
    19m 30s
  2. GET & POST Variable in PHP
    12m 21s
  3. $_FILES & $_ENV in PHP
    15m 24s
  4. Assignment : Super Global Variables
    2m 16s

  1. If-else in PHP
    26m 25s
  2. switch case in PHP
    15m 2s
  3. Assignment : Conditional Statements
    2m 28s

  1. Functions in PHP
    39m 46s
  2. Call by value vs Call by reference in PHP
    17m 28s
  3. Assignment : Functions
    5m 25s

  1. Array Functions in PHP
    44m 28s
  2. Array in PHP
    19m 35s
  3. Assignment : Array
    7m 18s

  1. String and its Functions in PHP
    27m 53s
  2. Assignment : String
    3m 44s

  1. Loops in PHP
    19m 28s
  2. More examples on Loops in PHP
    17m 20s
  3. Assignment : Loops
    8m 32s

  1. Cookies in PHP
    15m 45s
  2. Session in PHP
    35m 42s

  1. Header Function in PHP
    17m 11s
  2. Assignment : Header Functions
    1m 57s

  1. Date and Time functions in PHP
    36m 14s
  2. Assignment : Date Time Functions
    4m 29s

  1. Include & Require Statement in PHP
    13m 52s

  1. Error Handling in PHP
    15m 18s

  1. File Upload in PHP
    42m 55s

  1. Database Connection in PHP Part 1
    29m 17s
  2. Database Connection in PHP Part 2
    32m

  1. SQL Injection in PHP
    30m 33s

  1. Crud - Registration and DB connection Part 1
    31m 31s
  2. Crud - Registration and DB connection Part 2
    24m 2s
  3. Log in Operation
    27m 24s
  4. Read Operation
    30m 27s
  5. Update Operation Part 1
    12m 53s
  6. Update Operation Part 2
    27m 17s
  7. Log out Operation
    9m 29s

  1. MySQL Interview Question 1
    33m 7s
  2. MySQL Interview Question 2
    25m 23s
  3. MySQL Interview Question 3
    24m 27s
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