Fatalerror: Calltoundefinedfunctioncurl_init ()

Fatalerror: Calltoundefinedfunctioncurl_init () how can this error be solved? In php. ini, the extension = php_curl.dll annotation has been removed and all methods mentioned on the Internet have been tried. my PHP version of win764bit system is Fatal error: Call to undefined function curl_init ()
How can this error be solved?

Php. ini
Extension = php_curl.dll annotation removed
I tried all the methods on the Internet, but I am using the win7 64bit system.
PHP version 5.3.13


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I don't know. I can only check it.
1: Finally, we have to put php installation into the environment variables.
; E: \ php5; E: \ php5 \ ext;
2: Big guy, I also solved it. the php under wamp. ini is loaded C: \ Program Files \ wamp \ bin \ apache \ Apache2.2.11 \ bin \ php. under the ini directory, it is not C: \ Program Files \ wamp \ bin \ php \ php5.3.0 \ php. ini. save your life.
3: libeay32.dll and ssleay32.dll must be copied and placed under system32. restart Apache.

Refer
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Php_curl.dll requires the libeay32.dll and ssleay32.dll support libraries.
Therefore, you need to place libeay32.dll and ssleay32.dll in the system's search path.

Currently, php for win does not have x64 version, so you may need to set libeay32.dll and ssleay32.dll to run in x86 compatible mode.