curl -X POST \ -H "Content-Type: application/json" \ -H "X-Api-Key: MyOZWbnPgja0qsQmdlLeN80Ku9cMubAT6mvzMOiR" \ -d '{"email":$email}' \ https://api.emailvalidationapi.io/v1/validate $data = array(); $data = [ "email" => $email, ] $curl = curl_init(); curl_setopt_array($curl, array( CURLOPT_URL => 'https://api.emailvalidationapi.io/v1/validate', CURLOPT_RETURNTRANSFER => true, CURLOPT_CUSTOMREQUEST => "POST", CURLOPT_POSTFIELDS => json_encode($data), CURLOPT_HTTPHEADER => array( 'Authorization: X-API-Key MyOZWbnPgja0qsQmdlLeN80Ku9cMubAT6mvzMOiR', 'content-type: application/json', ), )); $Email_validation = curl_exec($curl);