Timthumb is a great tool for resizing, zooming and cropping images on the fly. Occasionally though, it can throw up some errors that can be fiddly to debug. This post looks at the key things to check when something goes wrong...
If you're seeing this in your Wordpress application, it's a WP_Error to warn you that you don't have the appropriate extensions installed on your server or local machine to make an external HTTP request. It's common to see this on local server installations using software like WAMP or XAMPP that may not have these extensions on by default. There are various plugins that you might require this functionality, e.g. to connect to the Twitter API. This short post explains how to enable the cURL extension to resolve the issue.
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If you're experiencing a fatal error to an undefined curl_init function in your PHP application, in most cases this will simply be that the extension hasn't been enabled in your PHP ini file. But for those of you running Wamp 2.2, it may be a different problem altogether!