diff --git a/README.md b/README.md
index 6a7e54a..673b473 100644
--- a/README.md
+++ b/README.md
@@ -24,8 +24,7 @@ else:
 PHP contributed by @txt3rob
 ```php
 function is_temp_mail($mail) {
-    $list = file_get_contents ('disposable_email_blacklist.conf');
-    $mail_domains_ko = explode("\n", $list);
+    $mail_domains_ko = file('disposable_email_blacklist.conf', FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
     foreach($mail_domains_ko as $ko_mail) {
         list($mail_address, $mail_domain) = explode('@',$mail);
         if(strcasecmp($mail_domain, $ko_mail) == 0){