Step 1: Install PHP Faker Plugin Using Composer

 composer require fzaninotto/faker 

Step 2: Create MySQL Database and Tables:

--
-- Table structure for table `users`
--

CREATE TABLE IF NOT EXISTS `users` (
`id` int(11) NOT NULL,
`email` varchar(255) COLLATE utf8_unicode_ci NOT NULL,
`first_name` varchar(75) COLLATE utf8_unicode_ci NOT NULL,
`last_name` varchar(75) COLLATE utf8_unicode_ci NOT NULL,
`created` datetime NOT NULL
) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;

--
-- Indexes for dumped tables
--

--
-- Indexes for table `users`
--
ALTER TABLE `users`
ADD PRIMARY KEY (`id`);

--
-- AUTO_INCREMENT for dumped tables
--

--
-- AUTO_INCREMENT for table `users`
--
ALTER TABLE `users`
MODIFY `id` int(11) NOT NULL AUTO_INCREMENT;
                    

Step 3: Import Faker Object and Connect Database to generate Dummy Data:

<?php
/**
 * Populate MySQL Table Using faker
 * 
 * @author 
 */
require_once('./vendor/autoload.php');
try{
    $count = 100000;
    $faker = \Faker\Factory::create();

    //Connecting MySQL Database
    $pdo  = new PDO('mysql:host=localhost;dbname=test', 'root', 'mysql', array(
        PDO::ATTR_PERSISTENT => true
    ));
    $pdo->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION );

    //Drop the table 
    $stmt = $pdo->prepare("truncate table users");
    $stmt->execute();

    //Insert the data
    $sql = 'INSERT INTO users (first_name, last_name, email, created) 
    VALUES (:first_name, :last_name, :email, :created)';
    $stmt = $pdo->prepare($sql);

    for ($i=0; $i < $count; $i++) {
        $date = $faker->dateTime($max = 'now', 'UTC')->format('Y-m-d H:i:s');
        $stmt->execute(
            [
                ':first_name' => $faker->firstName, 
                ':last_name' => $faker->lastName,    
                ':email' => $faker->email, 
                ':created' => $date
            ]
        );
    }
} catch(Exception $e){
    echo '<pre>';print_r($e);echo '</pre>';exit;
}