get_image_tag_class │ filter-hook │ WP 2.6.0

Filters the value of the attachment's image tag class attribute.

Usage

add_filter( 'get_image_tag_class', 'wp_kama_get_image_tag_class_filter', 10, 4 );

/**
 * Function for `get_image_tag_class` filter-hook.
 * 
 * @param string       $class CSS class name or space-separated list of classes.
 * @param int          $id    Attachment ID.
 * @param string       $align Part of the class name for aligning the image.
 * @param string|int[] $size  Requested image size. Can be any registered image size name, or an array of width and height values in pixels (in that order).
 *
 * @return string
 */
function wp_kama_get_image_tag_class_filter( $class, $id, $align, $size ){

	// filter...
	return $class;
}

$class(string)

CSS class name or space-separated list of classes.

$id(int)

Attachment ID.

$align(string)

Part of the class name for aligning the image.

$size(string|int[])

Requested image size. Can be any registered image size name, or an array of width and height values in pixels (in that order).

Changelog

Where the hook is called

$class = apply_filters( 'get_image_tag_class', $class, $id, $align, $size );

Where the hook is used in WordPress