How to Validate email address in PHP?

Following are in built PHP function to validate the email address and Ip Address.


Validate Email - Example 1

$email='helo@gmail.com';
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
  echo $email. ' - Invalid'; 
}else{
echo $email. ' - Valid';     
}

helo@gmail.com - Valid

Validate Email - Example 2

$email='464646@gmail.com';
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
  echo $email. '- Invalid'; 
}else{
echo $email. ' - Valid';     
}

464646@gmail.com - Valid

Validate Email - Example 3

$email='arunkumar.com';
if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
  echo $email. ' - Invalid'; 
}else{
echo $email. ' - Valid';     
}

arunkumar.com - Invalid



Validate IP Address - Example 1
Question: How to Validate IP Address?

$ipAddress = '127.0.0.1';
if (!filter_var($ipAddress, FILTER_VALIDATE_IP)) {
    echo "$ipAddress is In-valid.";
}else{
    echo "$ipAddress is Valid.";
}

127.0.0.1 is Valid

Validate IP Address - Example 2

$ipAddress = '127.test.0.0.1';
if (!filter_var($ipAddress, FILTER_VALIDATE_IP)) {
    echo "$ipAddress is In-valid.";
}else{
    echo "$ipAddress is In-Valid.";
}

127.test.0.0.1 is Valid


Validate URL - Example 1

$ipAddress = '127.test.0.0.1';
$website = 'https://www.web-technology-experts-notes.in';
if (!preg_match("/\b(?:(?:https?|ftp):\/\/|www\.)[-a-z0-9+&@#\/%?=~_|!:,.;]*[-a-z0-9+&@#\/%=~_|]/i",$website)) {
  echo   "Invalid URL";
}else{
echo   "Valid URL";
}

Valid URL

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How to setup different configs in server (development, production)?

Question: How to implement different configs for development, production etc?

1. Added following line in .htacess (Location: /public/.htaccess)

   SetEnv APPLICATION_ENV development

   This is for development.
2. Open application.config.php in /config/application.config.php
3. Get the current environment.

   $applicationEnv = getenv('APPLICATION_ENV');

   
   Dynamic the file like below:

           'config_glob_paths' => array(         
               "config/autoload/{,*.}{$applicationEnv}.php"
           )

4. Create the config files like below in /config/autoload

   development.php
   production.php
   

5. Below are the sample of config file.

   return array(
       'db' => array(
           'driver' => 'Pdo',
           'dsn' => 'mysql:dbname=DBNAME;host=HOST',
           'username' => 'DB_USERNAME',
           'password' => 'DB_PASSWORD'
       )
   );

   Please update the database credentials.

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