Add PHP extension dependencies

DivineOmega · DivineOmega · commit 367ca274446a · 2018-11-09T22:37:16.000Z
diff --git a/composer.json b/composer.json
@@ -5,7 +5,9 @@
     "keywords": ["cache", "caching", "file cache", "caching library", "library", "php"],
     "license": "LGPL-3.0-only",
     "require": {
-        "php": ">=5.6"
+        "php": ">=5.6",
+        "ext-zlib": "*",
+        "ext-json": "*"
     },
     "require-dev": {
         "phpunit/phpunit": "^6.5",
