我正在使用Windows Server 2008R2上的PHP版本7.0.26。我试图通过以下步骤启用php_openssl.dll扩展名：
1. uncomment line: extension=php_openssl.dll
2. set path: extension_dir = "D:/_SERVER/_php7/ext/"
3. copy: php.ini to C:Windows
4. restart server: httpd -k stop, httpd -k start
现在，当我尝试通过php -m加载哪些扩展名时，我知道，加载了php_openssl扩展。
但是，当我尝试检查Web浏览器中的已加载扩展程序时，方法是get_loaded_extensions（），该扩展名未加载： - （
在错误日志中，有以下行：
The 'Apache2.4' service is restarting.
The 'Apache2.4' service has restarted.
winnt:notice] [pid 376:tid 456] AH00424: Parent: Received restart signal -- Restarting the server.
[Thu Nov 30 16:47:14.478831 2017] [ssl:warn] [pid 376:tid 456] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
PHP Warning: PHP Startup: Unable to load dynamic library 'D:/_SERVER/_php7/ext/php_openssl.dll' - The specified module could not be found.rn in Unknown on line 0
[Thu Nov 30 16:47:14.494431 2017] [mpm_winnt:notice] [pid 376:tid 456] AH00455: Apache/2.4.27 (Win32) OpenSSL/1.1.0f PHP/7.0.26 configured -- resuming normal operations
[Thu Nov 30 16:47:14.494431 2017] [mpm_winnt:notice] [pid 376:tid 456] AH00456: Apache Lounge VC15 Server built: Jul 7 2017 11:43:51
[Thu Nov 30 16:47:14.494431 2017] [core:notice] [pid 376:tid 456] AH00094: Command line: 'd:\_SERVER\_apache\bin\httpd.exe -d D:/_SERVER/_apache'
[Thu Nov 30 16:47:14.494431 2017] [mpm_winnt:notice] [pid 376:tid 456] AH00418: Parent: Created child process 6256
[Thu Nov 30 16:47:14.978047 2017] [ssl:warn] [pid 6256:tid 188] AH01873: Init: Session Cache is not configured [hint: SSLSessionCache]
PHP Warning: PHP Startup: Unable to load dynamic library 'D:/_SERVER/_php7/ext/php_openssl.dll' - The specified module could not be found.rn in Unknown on line 0
[Thu Nov 30 16:47:15.461662 2017] [mpm_winnt:notice] [pid 6256:tid 188] AH00354: Child: Starting 64 worker threads.
[Thu Nov 30 16:47:17.021712 2017] [mpm_winnt:notice] [pid 3668:tid 188] AH00364: Child: All worker threads have exited.
我敢肯定，通往php_openssl.dll的路径是正确的。
谢谢您的帮助。问候。
php.ini
; Directory in which the loadable extensions (modules) reside.
; On windows:
extension_dir = "ext"
i删除了php和apache，下载最新版本，配置，现在起作用。但是我找不到这种失败的正确原因： - （
谢谢您的帮助。