Add tests for PHP-extras

Author: Golmote

tests/languages/php!+php-extras/global_feature.test

@@ -0,0 +1,37 @@
+$GLOBALS
+$_SERVER
+$_GET
+$_POST
+$_FILES
+$_REQUEST
+$_SESSION
+$_ENV
+$_COOKIE
+$php_errormsg
+$HTTP_RAW_POST_DATA
+$http_response_header
+$argc
+$argv
+
+----------------------------------------------------
+
+[
+	["global", "$GLOBALS"],
+	["global", "$_SERVER"],
+	["global", "$_GET"],
+	["global", "$_POST"],
+	["global", "$_FILES"],
+	["global", "$_REQUEST"],
+	["global", "$_SESSION"],
+	["global", "$_ENV"],
+	["global", "$_COOKIE"],
+	["global", "$php_errormsg"],
+	["global", "$HTTP_RAW_POST_DATA"],
+	["global", "$http_response_header"],
+	["global", "$argc"],
+	["global", "$argv"]
+]
+
+----------------------------------------------------
+
+Checks for superglobals.

tests/languages/php!+php-extras/scope_feature.test

@@ -0,0 +1,27 @@
+static::foo()
+self::bar()
+parent::baz()
+
+----------------------------------------------------
+
+[
+	["scope", [
+		["keyword", "static"],
+		["punctuation", "::"]
+	]],
+	["function", "foo"], ["punctuation", "("], ["punctuation", ")"],
+	["scope", [
+		["keyword", "self"],
+		["punctuation", "::"]
+	]],
+	["function", "bar"], ["punctuation", "("], ["punctuation", ")"],
+	["scope", [
+		["keyword", "parent"],
+		["punctuation", "::"]
+	]],
+	["function", "baz"], ["punctuation", "("], ["punctuation", ")"]
+]
+
+----------------------------------------------------
+
+Checks for scopes.

tests/languages/php!+php-extras/this_feature.test

@@ -0,0 +1,11 @@
+$this
+
+----------------------------------------------------
+
+[
+	["this", "$this"]
+]
+
+----------------------------------------------------
+
+Checks for $this.