问题
I'm working on a wordpress plugin(managing background image), when I try to use
global $post;
print_r($post);
the object is empty.
Probably there is some required data (I dont know what.)
Please help me if you know.
回答1:
The WordPress global variable $post contains the data of the current Post within the The Loop.
This means that WordPress will assign a value to this variable in each loop iteration. Consecuently, if you're trying to access $post from anywhere in your code outside the WP loop, it will be of course empty...
来源：https://stackoverflow.com/questions/22745077/wordpress-global-post-variable-is-empty