How do you use curl within wordpress plugins?
You're not supposed to use CURL in WordPress Plugins.
Instead use the wp_ function for issuing HTTP requests, e.g.
function wp_plugin_event_handler () { $url = 'http://your-end-point'; $foo = 'bar'; $post_data = array( 'email' => urlencode($foo)); $result = wp_remote_post( $url, array( 'body' => $post_data ) );}add_action("wp_plugin_event", "wp_plugin_event_handler");In the past I've run into issues where WordPress plugins event handlers would hang with CURL. Using the WP_ functions instead worked as expected.
The admin section of the blog is password-protected, of course. You'll need to pass authentication data. Look up http authentication for details. Look specifically here:
http://www.php.net/manual/en/function.curl-setopt.php
You'll want to set the CURLOPT_USERPWD option and possibly CURLOPT_HTTPAUTH.