From b9902f355552816205f4d504659de16dfefdaeb1 Mon Sep 17 00:00:00 2001
From: Andy Snell <andysnell@gmail.com>
Date: Sat, 30 Nov 2019 19:28:03 -0600
Subject: [PATCH 1/2] Replace Depreciated Curly Braces with Brackets

---
 src/CreditCard.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/CreditCard.php b/src/CreditCard.php
index 049c497..3925f0f 100755
--- a/src/CreditCard.php
+++ b/src/CreditCard.php
@@ -223,12 +223,12 @@ protected static function luhnCheck($number)
     {
         $checksum = 0;
         for ($i = (2 - (strlen($number) % 2)); $i <= strlen($number); $i += 2) {
-            $checksum += (int)($number{$i - 1});
+            $checksum += (int)($number[$i - 1]);
         }
 
         // Analyze odd digits in even length strings or even digits in odd length strings.
         for ($i = (strlen($number) % 2) + 1; $i < strlen($number); $i += 2) {
-            $digit = (int)($number{$i - 1}) * 2;
+            $digit = (int)($number[$i - 1]) * 2;
             if ($digit < 10) {
                 $checksum += $digit;
             } else {

From 2d4813473ab67e4d1b116ff34918e716f1f54ba0 Mon Sep 17 00:00:00 2001
From: Yaroslav Molchan <yaroslav.molchan@gmail.com>
Date: Mon, 3 Feb 2020 14:29:37 +0200
Subject: [PATCH 2/2] Remove PHP 7.1 support.

---
 .travis.yml   | 1 -
 composer.json | 2 +-
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/.travis.yml b/.travis.yml
index 9705b19..9985dae 100755
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,7 +1,6 @@
 language: php
 
 php:
-  - 7.1
   - 7.2
   - 7.3
 
diff --git a/composer.json b/composer.json
index 8e5105c..b444bf3 100755
--- a/composer.json
+++ b/composer.json
@@ -23,7 +23,7 @@
         }
     ],
     "require": {
-        "php": ">=7.1",
+        "php": ">=7.2",
         "lib-pcre": ">=8.38",
         "ext-ctype": "*"
     },