Merge pull request #491 from Automattic/experiment/travis-php-5.4

Travis: Expand supported PHP down to 5.4

Author: GaryJones

.travis.yml

@@ -1,6 +1,6 @@
 language: php
 os: linux
-dist: xenial
+dist: trusty
 
 env:
   # `master` is now 3.x.
@@ -13,6 +13,8 @@ cache:
     - $HOME/.cache/composer/files
 
 php:
+  - 5.4
+  - 5.5
   - 5.6
   - 7.0
   - 7.1
@@ -36,7 +38,7 @@ jobs:
   include:
 
     - stage: lint
-      php: 7.3
+      php: 7.4
       env: PHPCS_BRANCH="dev-master"
       before_install: phpenv config-rm xdebug.ini || echo 'No xdebug config.'
       install: skip
@@ -59,7 +61,7 @@ jobs:
             - libxml2-utils
 
     - stage: sniff
-      php: 7.3
+      php: 7.4
       env: PHPCS_BRANCH="dev-master"
       before_install: phpenv config-rm xdebug.ini || echo 'No xdebug config.'
       install: composer install --no-suggest

README.md

@@ -15,6 +15,7 @@ Go to https://wpvip.com/documentation/phpcs-review-feedback/ to learn about why
 
 ## Minimal requirements
 
+* PHP 5.4+
 * [PHPCS 3.3.1+](https://github.com/squizlabs/PHP_CodeSniffer/releases)
 * [WPCS 2.*](https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/releases)
 

composer.json

@@ -15,14 +15,14 @@
 		}
 	],
 	"require": {
-		"php": ">=5.6",
+		"php": ">=5.4",
 		"squizlabs/php_codesniffer": "^3.5.5",
 		"wp-coding-standards/wpcs": "^2.3"
 	},
 	"require-dev": {
 		"dealerdirect/phpcodesniffer-composer-installer": "^0.7",
 		"phpcompatibility/php-compatibility": "^9",
-		"phpunit/phpunit": "^5 || ^6 || ^7"
+		"phpunit/phpunit": "^4 || ^5 || ^6 || ^7"
 	},
 	"suggest": {
 		"dealerdirect/phpcodesniffer-composer-installer": "^0.7 || This Composer plugin will manage the PHPCS 'installed_paths' automatically."