在functions.php中添加以下功能：

/*显示文章浏览次数*/
function getPostViews($postID){
$count = get_post_meta($postID,'views', true);
if($count==''){
delete_post_meta($postID,'views');
add_post_meta($postID,'views', '0');
return "0";
}
return $count.'';
}
function setPostViews($postID) {
$count = get_post_meta($postID,'views', true);
if($count==''){
$count = 0;
delete_post_meta($postID,'views');
add_post_meta($postID,'views', '0');
}else{
$count++;
update_post_meta($postID,'views', $count);
}
}

在需要显示浏览数的地方调用：

<?php setPostViews(get_the_ID()); ?>
<?php echo number_format(getPostViews(get_the_ID())); ?>