How to detect when admin user is on the All Posts page?

Question

Could anyone be kind enough to descrive how to I can detect (in my functions file) when admin an user is on the 'All Posts' page?

I have tried get_post_type() but it returns nothing.

Thanks.

Answer 1

If you need exactly on All Posts page, Not on All Pages, nor All Products or etc -

if 
(
    'edit.php' === $GLOBALS['pagenow']
    && ( 
        isset( $GLOBALS['typenow'] ) 
        && '' == $GLOBALS['typenow'] 
        || 'post' == $GLOBALS['typenow'] 
    )
)
{
    // Do what you like...
}

Answer 2

If I understood you correctly, this is what you are looking for:

if (
    'edit.php' === $GLOBALS['pagenow']
    && ! isset($_GET['action'])
) {
    // Do what you like...
}

Answer 3

Take a look at get_current_screen():

function do_something_on_all_posts_page() {
    $screen = get_current_screen();
    if ( $screen['base'] == 'edit' && $screen['post_type'] == 'post' ) {
        /* Your code here */
    }
}
add_action( 'current_screen', 'do_something_on_all_posts_page' );