Adjust HTML-Filter

The default editor is set to always generate xHTML 1.0 and thus not all tags are allowed; a classic example are iframes, which you use for Google Map for example. Sure there are other approaches via short code, etc., but this is not the today topic. Merely as an example, allowing the tag iframe, with various attributes, and the Tags must be added to the variable $ext.

function fb_change_mce_options($initArray) {
	// Comma separated string od extendes tags
	// Command separated string of extended elements
	$ext = 'pre[id|name|class|style],iframe[align|longdesc|name|width|height|frameborder|scrolling|marginheight|marginwidth|src]';

	if ( isset( $initArray['extended_valid_elements'] ) ) {
		$initArray['extended_valid_elements'] .= ',' . $ext;
	} else {
		$initArray['extended_valid_elements'] = $ext;
	}
	// maybe; set tiny paramter verify_html
	//$initArray['verify_html'] = false;

	return $initArray;
}
add_filter('tiny_mce_before_init', 'fb_change_mce_options');

Customizing the function of the buttons in your Editor

A way to expand the block formats (theme_advanced_blockformats) or modify and disable a few buttons in your editor (theme_advanced_disable).

function fb_change_mce_buttons( $initArray ) {
	//@see http://wiki.moxiecode.com/index.php/TinyMCE:Control_reference
	$initArray['theme_advanced_blockformats'] = 'p,address,pre,code,h3,h4,h5,h6';
	$initArray['theme_advanced_disable'] = 'forecolor';

	return $initArray;
}
add_filter('tiny_mce_before_init', 'fb_change_mce_buttons');

Change language of spelling

In our third case, we adapt the language of the spelling checker, in our example we will now allow German and English only.

function fb_mce_external_languages($initArray){
	$initArray['spellchecker_languages'] = '+German=de, English=en';

	return $initArray;
}
add_filter('tiny_mce_before_init', 'fb_mce_external_languages');

The default values of WordPress

Following the values that are used in the standard of wordpress which gives an insight into the possibilities for the transfer of the array.

'mode' => 'specific_textareas'
'editor_selector' => 'theEditor'
'width' => '100%'
'theme' => 'advanced'
'skin' => 'wp_theme'
'theme_advanced_buttons1' => 'bold,italic,strikethrough,|,bullist,numlist,blockquote,|,justifyleft,justifycenter,justifyright,|,link,unlink,wp_more,|,spellchecker,fullscreen,wp_adv'
'theme_advanced_buttons2' => 'formatselect,underline,justifyfull,forecolor,|,pastetext,pasteword,removeformat,|,media,charmap,|,outdent,indent,|,undo,redo,wp_help'
'theme_advanced_buttons3' => ''
'theme_advanced_buttons4' => ''
'language' => 'de'
'spellchecker_languages' => 'English=en,Danish=da,Dutch=nl,Finnish=fi,French=fr,+German=de,Italian=it,Polish=pl,Portuguese=pt,Spanish=es,Swedish=sv'
'theme_advanced_toolbar_location' => 'top'
'theme_advanced_toolbar_align' => 'left'
'theme_advanced_statusbar_location' => 'bottom'
'theme_advanced_resizing' => true
'theme_advanced_resize_horizontal' => false
'dialog_type' => 'modal'
'relative_urls' => false
'remove_script_host' => false
'convert_urls' => false
'apply_source_formatting' => false
'remove_linebreaks' => true
'gecko_spellcheck' => true
'entities' => '38,amp,60,lt,62,gt'
'accessibility_focus' => true
'tabfocus_elements' => 'major-publishing-actions'
'media_strict' => false
'paste_remove_styles' => true
'paste_remove_spans' => true
'paste_strip_class_attributes' => 'all'
'wpeditimage_disable_captions' => false
'plugins' => 'safari,inlinepopups,spellchecker,paste,wordpress,media,fullscreen,wpeditimage,wpgallery,tabfocus'