gravatar.php

<?php

return array(
	'default' => array(

		// By default, images are presented at 80px by 80px if no size parameter is supplied.
		// You may request a specific image size, which will be dynamically delivered from Gravatar
		// by passing a single pixel dimension (since the images are square):
		'size'   => 80,

		// the fallback image, can be a string or a url
		// for more info, visit: http://en.gravatar.com/site/implement/images/#default-image
		'fallback' => 'mm',

		// would you like to return a https://... image
		'secure' => false,

		// Gravatar allows users to self-rate their images so that they can indicate if an image
		// is appropriate for a certain audience. By default, only 'G' rated images are displayed
		// unless you indicate that you would like to see higher ratings.
		// Available options:
		// g: suitable for display on all websites with any audience type.
		// pg: may contain rude gestures, provocatively dressed individuals, the lesser swear words, or mild violence.
		// r: may contain such things as harsh profanity, intense violence, nudity, or hard drug use.
		// x: may contain hardcore sexual imagery or extremely disturbing violence.
		'maximumRating' => 'g',

		// If for some reason you wanted to force the default image to always load, you can do that setting this to true
		'forceDefault' => false,

		// If you require a file-type extension (some places do) then you may also add an (optional) .jpg extension to that URL
		'forceExtension' => 'jpg',
	)
);