validation.php

<?php 


$email='john@example.com';

public function validate($email)
{
  // Initialize CURL:
$ch = curl_init('http://apilayer.net/api/check?access_key='.$access_key.'&email='.$email.'');  
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

// Store the data:
$json = curl_exec($ch);
curl_close($ch);

// Decode JSON response:
$validationResult = json_decode($json, true);


checkfunction($validationResult['format_valid']);
}

//function to check validation function
public function checkfunction($email){
  if ($email==false) {
    die('Wrong email');
  }
  else{
    echo 'Valid email';
  }
}

?>