Anyhow; the error I received, even after enabling the php_curl.dll extension, was the following:
'unable to load dynamic library php_curl.dll'
When I checked the Apache error log, I was shown this:
Warning: PHP Startup: Unable to load dynamic library 'c:/wamp/bin/php/php5.3.13/ext/php_curl.dll' - The application has failed to start because its side-by-side configuration is incorrect. Please see the application event log or use the command-line sxstrace.exe tool for more detail. in Unknown on line 0.
The fix was to replace the php_curl.dll file in C:\wamp\bin\php\php5.3.13\ext with one of the following:
php_curl-5.3.13-nts-VC9-x64.zip
php_curl-5.3.13-VC9-x64.zip
php_curl-5.4.3-nts-VC9-x64.zip
php_curl-5.4.3-VC9-x64.zip
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