Change minimum php version 7.2

Author: odan

.github/workflows/php.yml

@@ -8,7 +8,7 @@ jobs:
     strategy:
       matrix:
         operating-system: [ubuntu-latest]
-        php-versions: ['7.1', '7.2', '7.3', '7.4']
+        php-versions: ['7.2', '7.3', '7.4']
     name: PHP ${{ matrix.php-versions }} Test on ${{ matrix.operating-system }}
 
     steps:

README.md

@@ -9,7 +9,7 @@
 
 ## Requirements
 
-* PHP 7.1+
+* PHP 7.2+
 
 ## Installation