使用get-post-meta自定义字段调用内容

做人联盟站，需要用到首页调用链接与价格，刚开始只想着去找插件实现，找了一夜，没找到，晕乎 ::(怒) 都忘记用自定义字段这个功能了。以下是用到的两个字段，记录一下。

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<?php if(get_post_meta($post->ID, "check it out", $single = true) != ""){ ?>
<div id="read-more-container">
< a href="<?php echo get_post_meta($post->ID,"check it out", $single = true);?>">
Check It Out</ a>
</div>
<?php } ?>

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<?php if(get_post_meta($post->ID, "check it out", $single = true) != ""){ ?>
<div id="read-more-container">
< a href="<?php echo get_post_meta($post->ID,"check it out", $single = true);?>">
<?php echo get_post_meta($post->ID,"price", $single = true);?></ a>
</div>
<?php } ?>```