如上所述，此链接可以帮助您实现以下目标：http://codex.wordpress.org/Post_Thumbnails
您需要将thumnail大小添加到函数中。php类：
the_post_thumbnail(); // without parameter -> Thumbnail
the_post_thumbnail(\'thumbnail\'); // Thumbnail (default 150px x 150px max)
the_post_thumbnail(\'medium\'); // Medium resolution (default 300px x 300px max)
the_post_thumbnail(\'large\'); // Large resolution (default 640px x 640px max)
the_post_thumbnail(\'full\'); // Original image resolution (unmodified)
the_post_thumbnail( array(100,100) ); // Other resolutions
然后，在循环中调用图像的主题模板中（例如loop.php），您需要将图像代码更改为：
<?php if(has_post_thumbnail()) { the_post_thumbnail(\'thumbnail\'); ?> // which will get you an image of 150x150
