Drop support for php 5.3

Author: mrethical

.github/workflows/main.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: true
       matrix:
         os: [ubuntu-latest]
-        php: [5.3, 5.4, 5.5, 5.6, 7.0, 7.1, 7.2, 7.3, 7.4, 8.0, 8.1, 8.2]
+        php: [5.4, 5.5, 5.6, 7.0, 7.1, 7.2, 7.3, 7.4, 8.0, 8.1, 8.2]
         stability: [prefer-stable]
 
     name: P${{ matrix.php }} - ${{ matrix.stability }} - ${{ matrix.os }}

composer.json

@@ -18,7 +18,7 @@
     "type": "library",
     "license": "MIT",
     "require": {
-        "php": "^5.3 || ^7.0 || ^8.0",
+        "php": "^5.4 || ^7.0 || ^8.0",
         "ext-curl": "*",
         "ext-json": "*"
     },

readme.md

@@ -9,7 +9,7 @@ This package can be used to retrieve http status code of a particular url, as we
 
 ## Requirements
 
-This package only requires php curl and json extensions. PHP requirement is 5.3+.
+This package only requires php curl and json extensions. PHP requirement is 5.4+.
 
 ## Installation