the following dlls give problems when we activate certain php extensions:

enabling php curl caused some dll missing errors.

ssleay32.dll – php_curl.dll
iconv.dll
vsinit.dll
these files have been copied to the bin directory of the apache folder.

some other files and the extension that causes that error:
libeay32.dll – php_openssl.dll
sablot.dll – php_xslt.dll
libinitl-1.dll – php_gettext.dll
ssleay32.dll – php_idap.dll