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WordPress: Add help text to the featured image metabox.
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| <?php | |
| /** | |
| * Add guidance text to the featured image metabox. | |
| * Filter: admin_post_thumbnail_html | |
| * | |
| * @param string $content Meta box HTML | |
| * @param integer $post_id ID of post | |
| * @return string | |
| */ | |
| function cmfy_featured_image_help_text( $content, $post_id ) { | |
| // Limit text to certain post types | |
| if ( 'page' == get_post_type( $post_id ) ) { | |
| $content .= sprintf( '<p>%s<p>', __( 'For best results, this image should be 900 pixels wide x 506 pixels tall or else it could be cropped unexpectedly. ', 'cmfy' ) ); | |
| } | |
| return $content; | |
| } | |
| add_filter( 'admin_post_thumbnail_html', 'cmfy_featured_image_help_text', 10, 2 ); |
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