rename var for more clarity

bin/phpsdk_dumpenv.bat

@@ -21,7 +21,7 @@ if "%PHP_SDK_ARCH%"=="x64" (
 )
 
 echo Visual C++:         %PHP_SDK_VC:~2%
-echo PHP-SDK path:       %PHP_SDK_PATH%
+echo PHP-SDK path:       %PHP_SDK_ROOT_PATH%
 
 
 exit /b

bin/phpsdk_setvars.bat

@@ -6,11 +6,11 @@ set PHP_SDK_BIN_PATH=%~dp0
 rem remove trailing slash
 set PHP_SDK_BIN_PATH=%PHP_SDK_BIN_PATH:~0,-1%
 
-for %%a in ("%PHP_SDK_BIN_PATH%") do set PHP_SDK_PATH=%%~dpa
+for %%a in ("%PHP_SDK_BIN_PATH%") do set PHP_SDK_ROOT_PATH=%%~dpa
 rem remove trailing slash
-set PHP_SDK_PATH=%PHP_SDK_PATH:~0,-1%
+set PHP_SDK_ROOT_PATH=%PHP_SDK_ROOT_PATH:~0,-1%
 
-set PHP_SDK_MSYS2_PATH=%PHP_SDK_PATH%\msys2\usr\bin
+set PHP_SDK_MSYS2_PATH=%PHP_SDK_ROOT_PATH%\msys2\usr\bin
 set PHP_SDK_PHP_CMD=%PHP_SDK_BIN_PATH%\php\do_php.bat
 
 set PATH=%PHP_SDK_BIN_PATH%;%PHP_SDK_MSYS2_PATH%;%PATH%

bin/phpsdk_version.bat

@@ -8,7 +8,7 @@ if "%PHP_SDK_PHP_CMD%"=="" (
 	)
 )
 
-%PHP_SDK_PHP_CMD% -r "echo 'PHP SDK ' . file_get_contents(getenv('PHP_SDK_PATH') . '\\VERSION');"
+%PHP_SDK_PHP_CMD% -r "echo 'PHP SDK ' . file_get_contents(getenv('PHP_SDK_ROOT_PATH') . '\\VERSION');"
 
 exit /b
 

lib/php/libsdk/SDK/Config.php

@@ -177,10 +177,10 @@ class Config
 
 	public static function getSdkPath()
 	{/*{{{*/
-		$path = getenv("PHP_SDK_PATH");
+		$path = getenv("PHP_SDK_ROOT_PATH");
 
 		if (!$path) {
-			throw new Exception("PHP_SDK_PATH isn't set!");
+			throw new Exception("PHP_SDK_ROOT_PATH isn't set!");
 		}
 
 		$path = realpath($path);