Sanitize a token list string, such as used in HTML rel and class attributes.

Parameters

$tokensstring|arrayrequired

List of tokens separated by spaces, or an array of tokens.

Return

Source

public function sanitize_token_list( $tokens ) {
	if ( is_string( $tokens ) ) {
		$tokens = preg_split( '/\s+/', trim( $tokens ) );
	}
	$tokens = array_map( 'sanitize_html_class', $tokens );
	$tokens = array_filter( $tokens );
	return implode( ' ', $tokens );
}

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