get_posts() returns all posts rather than the ones specified with ‘post_author’ =>

I want to retrieve an array with the posts of a certain user for a custom post type category.

However, get_posts($arg) returns ALL posts of this custom post type, although I specified the post_author

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<?php $pages = get_posts(array('post_type'  => 'profile','post_author' => $post->post_author)); ?>

<?php var_dump ($pages); ?>

In this example $post->post_author is 11. However, the result of the code above is:

array(3) { 
[0]=> object(WP_Post)#343 (24) { 
["ID"]=> int(2326)
["post_author"]=> string(2) "11" 
[1]=> object(WP_Post)#352 (24) { 
["ID"]=> int(2324) 
["post_author"]=> string(1) "0" 
[2]=> object(WP_Post)#395 (24) { 
["ID"]=> int(2322)
["post_author"]=> string(1) "0" 

Why does get_posts() returns posts of authors whose ID is not 11?

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  1. post_author is not a valid parameter for get_posts. You really need to look at WP_Query‘s argument list to see that, as get_posts() is really just a wrapper around that class.

    • author (int) – use author id.
    • author_name (string) – use
      ‘user_nicename’ (NOT name).
    • author__in (array) – use author id (available
      with Version 3.7).
    • author__not_in (array) – use author
      id (available with Version

    What you want is author without the post_ part. Try that, and it should work.

  2. As it is totally unclear where $post->post_author comes from, the most likely issue is, that you are either not referring to the $GLOBALS['post'] instance of WP_Post or that you have another query after your main loop, which replaces the main query.

    You best shot probably will be to use wp_reset_query(). This will realign the $GLOBALS['wp_query'] object which holds the current query with $GLOBALS['wp_the_query'] again, which holds the main query and afterwards call wp_reset_postdata() to rewind the main query.

    If that doesn’t help, then the chance that some plugin (or you) or the theme used query_posts(), which overwrites the global $wp_the_query object and therefore messes up your loop.

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