Source View: wp_get_attachment_thumb_url

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Understanding Source Code

The best way to understand what a hook does is to look at where it occurs in the source code.

  • Action hooks look like this: do_action( "hook_name" )
  • Filter hooks look like this: apply_filters( "hook_name", "what_to_filter" ).

Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.

Source View

Line Code
4878
4879      /**
4880       * Filter the attachment thumbnail URL.
4881       *
4882       * @since 2.1.0
4883       *
4884       * @param string $url     URL for the attachment thumbnail.
4885       * @param int    $post_id Attachment ID.
4886       */
4887      return apply_filters( 'wp_get_attachment_thumb_url', $url, $post->ID );
4888 }
4889
4890 /**
4891  * Check if the attachment is an image.
4892  *
4893  * @since 2.1.0
4894  *
4895  * @param int $post_id Attachment ID
4896  * @return bool