untrailingslashit() │ WP 2.2.0

Removes the trailing slash (/) at the end of a string (URL).

The function is used to clean absolute paths or URLs.

Used By: user_trailingslashit(), trailingslashit()
1 time — 0.000001 sec (speed of light) | 50000 times — 0.01 sec (speed of light) | PHP 7.3.12, WP 5.4

No Hooks.

Returns

String. The changed string.

Usage

$url = untrailingslashit( $url );
$string(string) (required)
The string from which the trailing slash (/) or slashes (//) should be removed.

Examples

0

#1 Demo: how it works 

echo untrailingslashit( 'www/name/domen.ru/' ); //> www/name/domen.ru
echo untrailingslashit( '/' );                  //> ''
echo untrailingslashit( '../../' );             // ../..

var_dump( untrailingslashit( '' ) );       //> ''
var_dump( untrailingslashit( false ) );    //> ''
var_dump( untrailingslashit( null ) );     //> ''
var_dump( untrailingslashit( [] ) );       // NULL

Changelog

Since 2.2.0 Introduced.

untrailingslashit() code WP 6.9.1

wp-includes/formatting.php 
function untrailingslashit( $value ) {
	return rtrim( $value, '/\\' );
}

Formatting