WordPress- add feature Image column in WP Admin for custom posts /post/page

Below are the simple steps to add feature Image column in WP Admin for custom post/post/page

1. Add the posts and pages columns filter. They can both use the same function.

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add_filter('manage_posts_columns', 'tcb_add_post_thumbnail_column', 5); add_filter('manage_pages_columns', 'tcb_add_post_thumbnail_column', 5); add_filter('manage_custom_post_columns', 'tcb_add_post_thumbnail_column', 5);

2. Add the column

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function tcb_add_post_thumbnail_column($cols){ $cols['tcb_post_thumb'] = __('Featured Image'); return $cols; }

3. Hook into the posts an pages column managing. Sharing function callback again.

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add_action('manage_posts_custom_column', 'tcb_display_post_thumbnail_column', 5, 2); add_action('manage_pages_custom_column', 'tcb_display_post_thumbnail_column', 5, 2); add_action('manage_custom_post_column', 'tcb_display_post_thumbnail_column', 5, 2);

4.bGrab featured-thumbnail size post thumbnail and display it.

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function tcb_display_post_thumbnail_column($col, $id){  switch($col){  case 'tcb_post_thumb':    if( function_exists('the_post_thumbnail') )    echo the_post_thumbnail( 'featured-thumbnail' );      else   echo 'Not supported in theme';    break;  } }