gallery_style │ filter-hook │ WP 2.5.0

Filters the gallery shortcode's default CSS styles and opening HTML div container.

To remove the CSS entirely, use the use_default_gallery_style instead:

add_filter( 'use_default_gallery_style', '__return_false' );

Usage

add_filter( 'gallery_style', 'wp_kama_gallery_style_filter' );

/**
 * Function for `gallery_style` filter-hook.
 * 
 * @param string $gallery_style Default CSS styles and opening HTML div container for the gallery
 *                              shortcode output.
 *
 * @return string
 */
function wp_kama_gallery_style_filter( $gallery_style ){
	// filter...
	return $gallery_style;
}

$gallery_style(string)

Default CSS styles and opening HTML div container for the gallery shortcode output.

Changelog

Where the hook is called

$output = apply_filters( 'gallery_style', $gallery_style . $gallery_div );

Where the hook is used in WordPress