View get_twitter_avatar.php
<?php
function getTwitterAvatar( $username, $size = "normal" ) {
// mini = 24px, normal = 48px, bigger = 73px
$sizes = array( "mini", "normal", "bigger" );
// Check for size, default to normal
if( in_array( $size, $sizes ) ) {
$variant = $size;
} else {
$variant = "normal";