Filters the TinyMCE config before init.
$mce_initarray$editor_idstringwp-includes/class-wp-editor.php:817_WP_Editors::editor_settings()wp-includes/script-loader.php:617wp_tinymce_inline_scripts()<?php * @since 3.3.0 The `$editor_id` parameter was added. * * @param array $mce_init An array with TinyMCE config. * @param string $editor_id Unique editor identifier, e.g. 'content'. Accepts 'classic-block' * when called from block editor's Classic block. */ $mce_init = apply_filters( 'tiny_mce_before_init', $mce_init, $editor_id ); } if ( empty( $mce_init['toolbar3'] ) && ! empty( $mce_init['toolbar4'] ) ) { $mce_init['toolbar3'] = $mce_init['toolbar4']; $mce_init['toolbar4'] = ''; }Introduced in 2.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.