Why is cURL Not Working on WAMP for Windows 7 64-bit?

PHP cURL Malfunction on WAMP for Windows 7 64-bit

Users attempting to utilize cURL within WAMP on Windows 7 64-bit systems may encounter difficulties despite enabling it from the WAMP tray. This article addresses a potential solution to this prevalent issue.

Diagnosing the Error:

Upon initiating PHP, users may encounter an error message indicative of a dynamic library loading failure, specifically:

PHP Startup: unable to load dynamic library 'c:/wamp/bin/php/php5.4.3/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-lin sxstrace.exe tool for more detail.

Resolving the Issue:

To resolve this issue, follow these steps:

1. Obtain an Updated cURL Version:
   Navigate to [Anindya's PHP downloads page](http://www.anindya.com/php-5-4-3-and-php-5-3-13-x64-64-bit-for-windows/) and select the cURL version corresponding to your PHP version. For instance, if you have PHP 5.3.13, download "php_curl-5.3.13-VC9-x64.zip."
2. Replace the php_curl.dll:
   Unpack the downloaded archive and copy the new php_curl.dll file into the ext folder located in your WAMP installation directory (e.g., c:/wamp/bin/php/php5.4.3/ext/).

Note: The "VC" version should be tried first, as it has been known to resolve the issue for many users.

By meticulously following the steps outlined above, you should successfully resolve the "cURL not working" issue and restore its functionality within WAMP on Windows 7 64-bit.

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