Drop support for PHP 5.3, becuase of bad support in Travis CI

Author: JakubOnderka

.travis.yml

@@ -1,15 +1,13 @@
 language: php
 
 php:
-  - 5.3.3
   - 5.4
   - 5.5
   - 5.6
   - 7.0
   - 7.1
   - 7.2
 
-dist: precise
 sudo: false
 
 cache:
@@ -18,8 +16,6 @@ cache:
     - $HOME/.composer/cache
 
 install:
-  - if [ "$TRAVIS_PHP_VERSION" == "5.3.3" ]; then composer config disable-tls true; fi
-  - if [ "$TRAVIS_PHP_VERSION" == "5.3.3" ]; then composer config secure-http false; fi
   - composer install --no-interaction --prefer-source
 
 script:

composer.json

@@ -4,7 +4,7 @@
     "homepage": "https://github.com/JakubOnderka/PHP-Parallel-Lint",
     "license": "BSD-2-Clause",
     "require": {
-        "php": ">=5.3.3"
+        "php": ">=5.4.0"
     },
     "require-dev": {
         "nette/tester": "~1.3",

parallel-lint.php

@@ -1,8 +1,8 @@
 <?php
 use JakubOnderka\PhpParallelLint;
 
-if (!defined('PHP_VERSION_ID') || PHP_VERSION_ID < 50303) {
-    echo "PHP Parallel Lint require PHP 5.3.3 or newer.", PHP_EOL;
+if (!defined('PHP_VERSION_ID') || PHP_VERSION_ID < 50400) {
+    echo "PHP Parallel Lint require PHP 5.4.0 or newer.", PHP_EOL;
     die(255);
 }
 
@@ -31,7 +31,7 @@ function showOptions()
     --colors        Enable colors in console output. (disables auto detection of color support)
     --no-colors     Disable colors in console output.
     --no-progress   Disable progress in console output.
-    --json          Output results as JSON string (require PHP 5.4).
+    --json          Output results as JSON string.
     --blame         Try to show git blame for row with error.
     --git <git>     Path to Git executable to show blame message (default: 'git').
     --stdin         Load files and folder to test from standard input.
@@ -92,10 +92,6 @@ function showUsage()
 try {
     $settings = PhpParallelLint\Settings::parseArguments($_SERVER['argv']);
 
-    if ($settings->json && PHP_VERSION_ID < 50400) {
-        throw new \Exception('JSON output require PHP version 5.4 and newer.');
-    }
-
     if ($settings->stdin) {
         $settings->addPaths(PhpParallelLint\Settings::getPathsFromStdIn());
     }