_wp_post_thumbnail_class_filter() - Adds a 'wp-post-image' class to post thumbnails. Internal use only.

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Description

Adds a 'wp-post-image' class to post thumbnails. Internal use only.

Uses the begin_fetch_post_thumbnail_html and end_fetch_post_thumbnail_html action hooks to dynamically add/remove itself so as to only filter post thumbnails.

$array = _wp_post_thumbnail_class_filter( $attr );

$attr: ( array ) required – Thumbnail attributes including src, class, alt, title.

array Modified array of attributes including the new 'wp-post-image' class.

File name: wordpress/wp-includes/media.php
Lines:

1 to 4 of 4

function _wp_post_thumbnail_class_filter( $attr ) {
  $attr['class'] .= ' wp-post-image';
  return $attr;
}