WordPress TinyMCE sample

wp-tiny-mce-sample.php

// Callback function to insert 'styleselect' into the $buttons array
function my_mce_buttons_2( $buttons ) {
	array_unshift( $buttons, 'styleselect' );
	return $buttons;
}

// Register our callback to the appropriate filter
add_filter('mce_buttons_2', 'my_mce_buttons_2');

// Callback function to filter the MCE settings
function my_mce_before_init_insert_formats( $init_array ) {  
	// Define the style_formats array
	$style_formats = array(  
		// Each array child is a format with it's own settings
		array(  
			'title' => 'Blue Box',  
			'block' => 'div',  
			'classes' => 'blue_box',
			'wrapper' => true,
			
		),  
		array(  
			'title' => 'Green Box',  
			'block' => 'div',  
			'classes' => 'green_box',
			'wrapper' => true,
		),
		array(  
			'title' => 'Orange Box',  
			'block' => 'div',  
			'classes' => 'orange_box',
			'wrapper' => true,
		),
		array(  
			'title' => 'Purple Box',  
			'block' => 'div',  
			'classes' => 'purple_box',
			'wrapper' => true,
		),
	);  
	// Insert the array, JSON ENCODED, into 'style_formats'
	$init_array['style_formats'] = json_encode( $style_formats );  
	
	return $init_array;  
  
} 
// Attach callback to 'tiny_mce_before_init' 
add_filter( 'tiny_mce_before_init', 'my_mce_before_init_insert_formats' );