Merge pull request #374 from perftools/composer2-platform-check

README.md

@@ -43,12 +43,13 @@ Any of the drivers and an accompanying database:
 - [MySQL (PDO)][ext-pdo_mysql]
 - [PostgreSQL (PDO)][ext-pdo_pgsql]
 
-Additionally, to use PDO with XHGui, you must either install the MongoDB PHP extension or skip platform requirements checks via `composer`. PDO may not support all the features of XHGui.
+NOTE: PDO may not support all the features of XHGui, see [#320].
 
 [ext-pdo]: https://www.php.net/manual/en/book.pdo.php
 [ext-pdo_sqlite]: https://www.php.net/manual/en/ref.pdo-sqlite.php
 [ext-pdo_mysql]: https://www.php.net/manual/en/ref.pdo-mysql.php
 [ext-pdo_pgsql]: https://www.php.net/manual/en/ref.pdo-pgsql.php
+[#320]: https://github.com/perftools/xhgui/issues/320
 
 # Installation from source
 

composer.json

@@ -17,7 +17,8 @@
             "php": "7.0.8",
             "ext-mongodb": "1.3.0"
         },
-        "sort-packages": true
+        "sort-packages": true,
+        "platform-check": "php-only"
     },
     "require": {
         "php": "^7.0",