Why does PHP refuse to enable cURL on Windows

I think you'll need libssh2.dll in your PATH too.

Credit goes to @Steven Hilder for pointing me in the right direction.

The problem was that Windows could not see libssh2.dll, another DLL that was in PHP's directory. Copying this file to C:\Windows\SysWOW64 and C:\Windows\System32, along with the other two DLL files from my OP (libeay32.dll and ssleay32.dll) worked.

I am uncomfortable with this solution though because when the time comes to update to a new PHP version I will have a harder time remembering to overwrite these DLLs with the new version.Therefore, I decided to remove all 3 DLLs from the System32 and SysWOW64 directories. Instead, I just added the PHP bin directory to the Windows' PATH variable, so that the next time the OS is looking for a missing file, it will also look in that directory. This has the added bonus that if a similar problem with another DLL occurs, it will be resolved automatically.

To add the PHP bin to Windows' PATH:

1. From the Start Menu search bar, search for and select Advanced system settings
2. Click Environment Variables. Scroll down the list of System variables to select Path and click Edit... to open the current PATH setting
3. Append ;C:\php or whatever directory has php.exe to the current setting (semi-colon is used to separate paths).

on windows the cURL execution wants SSL certificate. may be because of that others error is showing.

Put the below code before curl_exec(curlHandle).

//to ignore the SSL certificate in windows        curl_setopt($curlHandle, CURLOPT_SSL_VERIFYPEER,false);