WordPress Code Reference

tiny_mce_before_init

Summery Summery

Filters the TinyMCE config before init.

apply_filters( 'tiny_mce_before_init', array $mceInit, string $editor_id )

$mceInit: An array with TinyMCE config.
$editor_id: Unique editor identifier, e.g. 'content'. Accepts 'classic-block' when called from block editor's Classic block.

Changelog
Version	Description
3.3.0	The `$editor_id` parameter was added.
2.5.0	Introduced.