Curl cannot be enabled for WIN764-bit

WIN764-bit cannot enable curl according to the method on the internet to try a lot of useless, how is it going on Ah, the environment is wampserver2.2e-php5.4.3-httpd-2.4.2-mysql5.5.24-x64, your x64 indicates whether all modules are x64 or only flat WIN7 64-bit cannot enable curl.
According to the method of the network tried a lot of useless, what's going on Ah, the environment is wampserver2.2e-php5.4.3-httpd-2.4.2-mysql5.5.24-x64
------ Solution --------------------
Does your x64 mean that all modules are x64 or only the platform is x64?

If php is x64 and php_curl.dll is compiled as x64

Curl requires openssl, so this is also a problem