Sometimes I need to override default PHP settings in my Joomla projects. For example, it can help when you are trying to install big Joomla component through 'Upload Package File' option, but 'max_execution_limit' PHP option has small value and component hasn't time to install. Or you need to increase 'memory_limit' option for some purposes. Yes, you can change this settings in PHP config file or change it through .htaccess file, but what are you doing when you haven't access to server? For helping in this case I have created simple plugin which helps to override PHP settings. You can download this plugin here.
PS: If you use 'PHP Settings' plugin, please post a rating and a review at the Joomla! Extensions Directory.