How to Prevent a WordPress Plugin from Updating

I’ve had a couple of cases where I downloaded a plugin, then needed to make some modifications and disable updating to make sure those changes are not overwritten when the next version came out. Ever wondered how plugin updates can be disabled? Here’s how to do it.

Add the following code to your plugin’s core PHP file:

add_filter( 'http_request_args', 'dm_prevent_update_check', 10, 2 );
function dm_prevent_update_check( $r, $url ) {
    if ( 0 === strpos( $url, 'http://api.wordpress.org/plugins/update-check/' ) ) {
        $my_plugin = plugin_basename( __FILE__ );
        $plugins = unserialize( $r['body']['plugins'] );
        unset( $plugins->plugins[$my_plugin] );
        unset( $plugins->active[array_search( $my_plugin, $plugins->active )] );
        $r['body']['plugins'] = serialize( $plugins );
    }
    return $r;
}

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