Apache 2.4.23 PHP7.x Windows 10 x64 php_curl not w

Question

I was trying to upgrade my server to latest Apache 2.4.23 and PHP 7.1 but it fail to load php_curl library, don't know why.

PHP Warning:  PHP Startup: Unable to load dynamic library 'ext\\php_curl.dll' - The specified procedure could not be found.\r\n in Unknown on line 0

I have tried followings

1. Change extension path to full path like d:\webserver\php\ext
2. Copy php_curl.dll, libssh2.dll, libeay32.dll, ssleay32.dll to System32, php/ext, apache/bin, php
3. Added php path system variable
4. Have tried both PHP7 and PHP7.1
5. All of these are x64 and all other extension loaded successfully and server working but only php_curl is not working
6. uncommented extension in php.ini

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• Apache 2.4.23 x64
• PHP7 and Also tried PHP7.1 (Thread Safe) x64
• Windows 10 x64

Answer 1

Solution: Put libeay32.dll, libssh2.dll, ssleay32.dll files under dir specified in httpd.conf's ServerRoot directive. These dlls can be found compiled under php root folder.

Reasons:

Problem is php_curl.dll requires to access following libraries while loading: libeay32.dll, libssh2.dll, ssleay32.dll and it does not make sense if you put them in ./php/ext dir or if you put php extensions in php root dir.

Of course you can put them in c:\Windows or in some global folder defined in PATH but if you dont want to do this and you want that your apache+php installation was portable:

The path specified in ServerRoot in httpd.conf is treated as home path for php. The behaviour is similar to situation where you include ./path/to/some.php file in ./index.php and home path for some.php file is still ./ the dir where index.php resides.

In shorts just put those three dlls right in dir you specified in httpd.conf ServerRoot directive and php_curl.dll will not fail to load again.