Nope, it's not. Windows Vista Home Premium x32:
Relevant section of php.ini:
; Windows Extensions
; Note that ODBC support is built in, so no dll is needed for it.
; Note that many DLL files are located in the extensions/ (PHP 4) ext/ (PHP 5)
; extension folders as well as the separate PECL DLL download (PHP 5).
; Be sure to appropriately set the extension_dir directive.
;extension=php_apc.dll
;extension=php_apd.dll
;extension=php_bcompiler.dll
;extension=php_bitset.dll
;extension=php_blenc.dll
;extension=php_bz2.dll
;extension=php_bz2_filter.dll
;extension=php_classkit.dll
;extension=php_cpdf.dll
;extension=php_crack.dll
extension=php_curl.dll
;extension=php_cvsclient.dll
;extension=php_db.dll
;extension=php_dba.dll
;extension=php_dbase.dll
;extension=php_dbx.dll
Proof it's not working:
c:\users\miff>curl http://localhost/xampp/phpinfo.php | grep curl
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 62592 0 62592 0 0 1971k 0 --:--:-- --:--:-- --:--:-- 3319k
<tr><td class="e">HTTP_USER_AGENT </td><td class="v">curl/7.16.3 (i686-pc-cygwin) libcurl/7.16.3 OpenSSL/0.9.8k zlib/1.2.3 libssh2/0.15-CVS </td></tr>
<tr><td class="e">User-Agent </td><td class="v">curl/7.16.3 (i686-pc-cygwin) libcurl/7.16.3 OpenSSL/0.9.8k zlib/1.2.3 libssh2/0.15-CVS </td></tr>
<tr><td class="e">_SERVER["HTTP_USER_AGENT"]</td><td class="v">curl/7.16.3 (i686-pc-cygwin) libcurl/7.16.3 OpenSSL/0.9.8k zlib/1.2.3 libssh2/0.15-CVS</td></tr>
c:\users\miff>
