remove_shortcode() │ WP 2.5.0

By default WordPress uses the [gallery] shortcode, which outputs the gallery. Let's remove the handler of this shortcode by inserting the following code before displaying the content:

remove_shortcode( 'gallery' );

// ...

the_content();

If, for example, you insert in functions.php:

remove_shortcode( 'gallery' );

then when viewing the post, the shortcode in the content will not be processed and will be displayed as is:

[gallery ids="375,291,166"]

Note: in the admin, in the visual editor, the gallery will be supported...

There is a shortcode myshortcode we need to disable it and cut all its variants from the post content.

To cut, use the the_content filter hook.

add_action( 'init', 'remove_and_strip_shortcode' );

function remove_and_strip_shortcode() {

	// delete
	remove_shortcode( 'myshortcode' );

	// cut out
	add_filter( 'the_content', '_strip_myshortcode', 5 );
}

function _strip_myshortcode( $content ){

	// cut: [myshortcode] and [myshortcode ids="132,2154,548"]
	$content = preg_replace( '~\[myshortcode[^\]]*\]~', '', $content );

	// cut: [myshortcode] data [/myshortcode]
	$content = preg_replace( '~\[(myshortcode)[^\]]*\].*?\[\/\]~s', '', $content );

	return $content;        
}

add_action( 'init', 'add_my_shortcodes' );
add_action( 'init', 'remove_my_shortcodes', 20 );

// add a custom shortcode 
function add_my_shortcodes() {
	add_shortcode( 'myShortcode', 'my_shortcode_function' );
}

// remove it
function remove_my_shortcodes() {
	remove_shortcode( 'myShortcode' );
}