Conflict with Smart Slider 3 and code improvement suggestion

Hi @iqpascal,

I’m the developer of Smart Slider 3. We use ob_start function like you do in your plugin. I started to collection usage of output buffering examples in different plugins and it seems like you use different method. Here you can check my collection: https://github.com/nextend/wp-ob-plugins-themes/blob/master/README.md

As you can see all of the popular plugins use template_redirect action to start their output buffers. Using template_include instead will result plugin conflict with other plugins.

Your original code:

/*
 * Attempt on output buffering to protect against headers already send mistakes 
 */
function iqblockcountry_buffer() {
	ob_start();
} 

/*
 * Attempt on output buffering to protect against headers already send mistakes 
 */
function iqblockcountry_buffer_flush() {
	ob_end_flush();
} 

if (get_option('blockcountry_buffer') == "on")
{
    add_action ( 'init', 'iqblockcountry_buffer',1);
    add_action ( 'wp_footer', 'iqblockcountry_buffer_flush');
}

Suggested code:

if (get_option('blockcountry_buffer') == "on")
{
    add_action ( 'init', 'iqblockcountry_buffer',1);
    add_action ( 'shutdown', 'iqblockcountry_buffer_flush');
}