WordPress at a glance
filter is not described

mce_buttons filter-hook . WP 1.0

This filter is documented in wp-includes/class-wp-editor.php

Usage

add_filter( 'mce_buttons', 'filter_function_name_7657', 10, 2 );
function filter_function_name_7657( $toolbar1, $string ){
	// filter...

	return $toolbar1;
}
$toolbar1
-
$string
-

Где вызывается хук

wp_tinymce_inline_scripts()
mce_buttons
_WP_Editors::editor_settings()
mce_buttons
wp-includes/script-loader.php 441
$toolbar1 = apply_filters( 'mce_buttons', $toolbar1, 'classic-block' );
wp-includes/class-wp-editor.php 669
$mce_buttons = apply_filters( 'mce_buttons', $mce_buttons, $editor_id );

Где используется хук в ядре WordPress

Использование не найдено.