Merge branch 'php8'

.travis.yml

@@ -7,6 +7,8 @@ php:
   - 7.2
   - 7.3
   - 7.4
+  - nightly
 
 install:
-  - composer update
+  - composer self-update --2
+  - composer update --ignore-platform-req=php

composer.json

@@ -12,7 +12,7 @@
         "php": ">=5.6"
     },
     "require-dev": {
-        "phpunit/phpunit": "^5.7",
+        "phpunit/phpunit": "^5.7.27",
         "guzzlehttp/guzzle": "^6",
         "ext-json": "*"
     },

src/Exception/SyntaxError.php

@@ -4,7 +4,7 @@ namespace JsonMachine\Exception;
 
 class SyntaxError extends \RuntimeException
 {
-    public function __construct($message = "", $position)
+    public function __construct($message, $position)
     {
         parent::__construct($message." At position $position.");
     }

test/docker-run-all-platforms.sh

@@ -7,7 +7,8 @@ for VERSION in \
   7.1:2.9.0 \
   7.2:2.9.0 \
   7.3:2.9.0 \
-  7.4:2.9.0
+  7.4:2.9.0 \
+  8.0-rc:3.0.0beta1
 do
     set -- $VERSION
     PHP_VERSION=$1
@@ -37,10 +38,10 @@ do
             autoconf \
             g++ \
             libtool \
-            make \
-            && pecl install xdebug-$XDEBUG_VERSION \
-              && docker-php-ext-enable xdebug \
-            && wget https://getcomposer.org/composer.phar -O /usr/local/bin/composer \
+            make
+        RUN wget http://pear.php.net/go-pear.phar && php go-pear.phar
+        RUN pecl install xdebug-$XDEBUG_VERSION
+        RUN wget https://getcomposer.org/composer.phar -O /usr/local/bin/composer \
               && chmod +x /usr/local/bin/composer
     " | docker build --tag "$CONTAINER_NAME" - > /dev/null
     printf "Running tests...\n"

test/run.sh

@@ -1,3 +1,3 @@
 #!/usr/bin/env sh
 printf "$(php -v | head -n 1)\n"
-composer update && vendor/bin/phpunit --colors
+composer update --ignore-platform-req=php && vendor/bin/phpunit --colors