1

I use this code to import posts from an external script. https://gist.github.com/davejamesmiller/bc9d443da989c6692441

This works but I need to check if a post exits. So I want to use post_exists().

if(post_exists("test") > 0) {
}

I got this error:

Fatal error: Uncaught Error: Call to undefined function post_exists() 

Is it possible to check in an external script for posts?

2

post_exists() doesn't exist because you forgot to include the file where the function is declared. Looking to https://developer.wordpress.org/reference/functions/post_exists/#source you can see that it's declared in wp-admin/includes/post.php

Add this to your existing code juste after the require of taxonomy.

require_once ABSPATH . '/wp-admin/includes/post.php';

The best way to achieve what you want is to use wp-api in my opinion !

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