PHP PDO Login System One: Authenticate users with records on MySQL using PDO

Recommend this page to a friend!
  Info   Example   View files (58)   Download .zip   Reputation   Support forum   Blog    
Last Updated Ratings Unique User Downloads Download Rankings
2020-06-22 (1 month ago) Not yet rated by the usersTotal: 99 This week: 2All time: 9,391 This week: 114
Version License PHP version Categories
pdoone_login 1.0GNU Lesser Genera...5PHP 5, Databases, User Management
Description Author

This package can authenticate users with records on MySQL using PDO.

It provides a generic solution to present user login form that takes the user name and the password of the user to be autenticated.

The package can lookup the user account and check if the password is valid accessing the users table in a given MySQL databased that is accessed using PDO.

Picture of Jorge Castro
  Performance   Level  
Name: Jorge Castro <contact>
Classes: 18 packages by
Country: Chile Chile
Age: 44
All time rank: 16834 in Chile Chile
Week rank: 20 1 in Chile Chile
Innovation award
Innovation award
Nominee: 8x

Winner: 1x



An example of a login page using php and mysql

This example code implements a login page that validates the user into the database. It is a basic example and it lacks some features (such as hash of the password).



Initializing the project using composer

Run composer as follow

Then, add your information and add the next dependencies: eftec/pdoone,  eftec/bladeone, eftec/validationone  

* eftec/pdoone connects to the database

* eftec/bladeone renders the view

* eftec/validationone validates the user input. It's also a message container.

Welcome to the Composer config generator

This command will guide you through creating your composer.json config.

Package name (<vendor>/<name>) [jorge/pdo-one_login]: eftec/pdoone_login Description []: example of a login page Author [<>, n to skip]: Minimum Stability []: Package Type (e.g. library, project, metapackage, composer-plugin) []: project License []: mit

Define your dependencies.

Would you like to define your dependencies (require) interactively [yes]? Search for a package: eftec/pdoone Enter the version constraint to require (or leave blank to use the latest version): Using version ^1.28 for eftec/pdoone Search for a package: eftec/bladeone Enter the version constraint to require (or leave blank to use the latest version): Using version ^3.37 for eftec/bladeone Search for a package: eftec/validationone Enter the version constraint to require (or leave blank to use the latest version): Using version ^1.23 for eftec/validationone Search for a package: Would you like to define your dev dependencies (require-dev) interactively [yes]? no


"name": "eftec/pdoone_login",
"description": "example of a login page",
"type": "project",
"require": {
    "eftec/pdoone": "^1.28",
    "eftec/bladeone": "^3.37",
    "eftec/validationone": "^1.23"
"license": "mit",
"authors": [
        "name": "",
        "email": ""


Do you confirm generation [yes]?

## Edit composer.json

We need to add a default namespace for psr-4. Add the next content inside composer.json

"autoload": {

"psr-4": {"PdoOne_login\\": ""}


And runs the next command

To rebuild the autoload

Creating the mysql table

  `userid` VARCHAR(50) NOT NULL,
  `password` VARCHAR(60) NULL,
  `fullname` VARCHAR(45) NULL,
  PRIMARY KEY (`userid`));

Generating the class Repo

No, we want to generate the class repository. repo/UserRepo.php using PdoOne

php vendor/eftec/pdoone/lib/PdoOne.php -database mysql -server -user root -pwd abc.123 -db testdb -input "user" -output classcode

This connects to a mysql database located in the server, user root, password abc.123, database testdb and table "user" (table created in the previous step). It will generate the whole class.

Copy the code and save it inside a new code in a new folder folder called repo

? repo

? ? UserRepo.php

Finishing the Class Repo

While the class is complete but it misses a line, the namespace, so let's add the namespace to the class

namespace PdoOne_login\repo;

why PdoOne_login? It is because psr-4 (the line added in composer.json)

And why repo? It is because the folder is called repo.

Creating the views

? views

? ? login.blade.php login template

? ? start.blade.php start template (when we load)

I used the html code form

I edited a bit and here, then I added the notation of Bladeone (check the library for more information)

Boilerplate code

? app

? ? app.php it is our common file


use eftec\bladeone\BladeOne;
use eftec\PdoOne;
use eftec\ValidationOne;

include __DIR__."/../vendor/autoload.php";

// singleton and container

/ @var BladeOne $bladeOne */
/ @var PdoOne $pdoOne */
/ @var ValidationOne $validationOne */

function bladeOne() {
    global $bladeOne;
    if($bladeOne===null) {
        $bladeOne=new BladeOne();
    return $bladeOne;
function pdoOne() {
    global $pdoOne;
    if($pdoOne===null) {
        $pdoOne=new PdoOne('mysql','','root','abc.123','testdb');
        $pdoOne->logLevel=3; // it shows all errors.
    return $pdoOne;
function validationOne() {
    global $validationOne;
    if($validationOne===null) {
        $validationOne=new ValidationOne();
    return $validationOne;

What does it do?

It creates the instance of PdoOne (database), ValidationOne (validation and message container) and BladeOne (template)

It also starts a new session and enable the composer's autoloader.

The functions are quite simple. The work as :

  • If the variable is not defined, then it is created and initialized.
  • And the variable is returned.

Our login code

? index.php it is our login code


use PdoOne_login\repo\UserRepo;

include "app/app.php";

if($buttonlogin===false) {
} else {
        ->condition('minlen','The login must have at least 3 characters',3)
        ->condition('maxlen','The login must have at most 10 characters',10)
        ->condition('minlen','The password must have at least 3 characters',3)

    if(validationOne()->messageList->errorcount===0) {
        $userDB= UserRepo::get($login);
        if($userDB===null || $userDB===false || $userDB['password']!=$password) {
            validationOne()->messageList->addItem('general','User or password incorrect','error');
        } else {

echo bladeOne()->run('login'

It works as follow

  • if buttonlogin is false (not pressed) then * It sets some default values (empty user and password)
  • If buttonlogin is not false then * It reads the user and password. * If it not fails (it could fail if the user has less than 3 characters or other conditions ) We read from the database. We use theUserRepo* class to read using the primary key. * If the user (from the database) is false or if the password (read from the database) is not equals to the input password then * It adds an error * Otherwise * It stores the user in the session * Redirect to the login page
  • Finally, it shows the template using the library BladeOne

Final testing

We should not forget to add a new user into the database.

Login into our webserver and so we could test it.



The password is not hash-ed into the database.

How to hash it?

Change the code



where $SALT is a secret value defined in app.php

`$SALT='asdk sk padk se4'3485'4385'4reorekkhptrkhptrkhk trhyktrpkptrkh+d+';// It is an example` 

The value must be also store hashed in the database.

File Role Description
app (1 file)
compiles (2 files)
css (1 file)
img (2 files)
repo (1 file)
vendor (1 file, 2 directories)
views (2 files)
composer.json Data Auxiliary data
composer.lock Data Auxiliary data
index.php Example Example script
LICENSE Lic. License text
logout.php Aux. Auxiliary script Doc. Read me
start.php Example Example script

  Files  /  app  
File Role Description
   app.php Example Example script

  Files  /  compiles  
File Role Description
   2736fab291f04e69b6...361f5b82461a.bladec Example Example script
   2b020927d3c6eb4072...ce3597a3f88d.bladec Example Example script

  Files  /  css  
File Role Description
   css.css Data Auxiliary data

  Files  /  img  
File Role Description
   img1.jpg Data Auxiliary data
   img2.jpg Data Auxiliary data

  Files  /  repo  
File Role Description
   UserRepo.php Class Class source

  Files  /  vendor  
File Role Description
composer (8 files)
eftec (3 directories)
   autoload.php Aux. Auxiliary script

  Files  /  vendor  /  composer  
File Role Description
   autoload_classmap.php Aux. Auxiliary script
   autoload_namespaces.php Aux. Auxiliary script
   autoload_psr4.php Aux. Auxiliary script
   autoload_real.php Class Class source
   autoload_static.php Class Class source
   ClassLoader.php Class Class source
   installed.json Data Auxiliary data
   LICENSE Lic. License text

  Files  /  vendor  /  eftec  
File Role Description
bladeone (10 files, 1 directory)
pdoone (4 files, 1 directory)
validationone (3 files, 1 directory)

  Files  /  vendor  /  eftec  /  bladeone  
File Role Description
lib (8 files)
   .php_cs Example Example script Data Auxiliary data Data Auxiliary data Data Auxiliary data Data Auxiliary data
   composer.json Data Auxiliary data
   LICENSE Lic. License text
   phpcs.xml Data Auxiliary data Example Example script Doc. Documentation

  Files  /  vendor  /  eftec  /  bladeone  /  lib  
File Role Description
   BladeOne.php Class Class source
   BladeOneCache.php Class Class source
   BladeOneCacheRedis.php Class Class source
   BladeOneCustom.php Class Class source
   BladeOneHtml.php Class Class source
   BladeOneHtml2.php Class Class source
   BladeOneHtmlBootstrap.php Class Class source
   BladeOneLang.php Class Class source

  Files  /  vendor  /  eftec  /  pdoone  
File Role Description
lib (3 files)
   autoload.php Aux. Auxiliary script
   composer.json Data Auxiliary data
   LICENSE Lic. License text Doc. Documentation

  Files  /  vendor  /  eftec  /  pdoone  /  lib  
File Role Description
   IPdoOneCache.php Class Class source
   PdoOne.php Class Class source
   PdoOneEncryption.php Class Class source

  Files  /  vendor  /  eftec  /  validationone  
File Role Description
lib (5 files)
   composer.json Data Auxiliary data
   LICENSE Lic. License text Doc. Documentation

  Files  /  vendor  /  eftec  /  validationone  /  lib  
File Role Description
   MessageItem.php Class Class source
   MessageList.php Class Class source
   ValidationInputOne.php Class Class source
   ValidationItem.php Class Class source
   ValidationOne.php Class Class source

  Files  /  views  
File Role Description
   login.blade.php Aux. Auxiliary script
   start.blade.php Aux. Auxiliary script

 Version Control Unique User Downloads Download Rankings  
This week:2
All time:9,391
This week:114

For more information send a message to info at phpclasses dot org.