wp_text_diff( string $left_string, string $right_string, string|array $args = null ): string

3387	function wp_text_diff( $left_string, $right_string, $args = null ) {3388		$defaults = array(3389			'title'           => '',3390			'title_left'      => '',3391			'title_right'     => '',3392			'show_split_view' => true,3393		);3394		$args     = wp_parse_args( $args, $defaults );3395 3396		if ( ! class_exists( 'WP_Text_Diff_Renderer_Table', false ) ) {3397			require ABSPATH . WPINC . '/wp-diff.php';3398		}3399 3400		$left_string  = normalize_whitespace( $left_string );3401		$right_string = normalize_whitespace( $right_string );3402 3403		$left_lines  = explode( "\n", $left_string );3404		$right_lines = explode( "\n", $right_string );3405		$text_diff   = new Text_Diff( $left_lines, $right_lines );3406		$renderer    = new WP_Text_Diff_Renderer_Table( $args );3407		$diff        = $renderer->render( $text_diff );3408 3409		if ( ! $diff ) {3410			return '';3411		}3412 3413		$is_split_view       = ! empty( $args['show_split_view'] );3414		$is_split_view_class = $is_split_view ? ' is-split-view' : '';3415 3416		$r = "<table class='diff$is_split_view_class'>\n";3417 3418		if ( $args['title'] ) {3419			$r .= "<caption class='diff-title'>$args[title]</caption>\n";3420		}3421 3422		if ( $args['title_left'] || $args['title_right'] ) {3423			$r .= '<thead>';3424		}3425 3426		if ( $args['title_left'] || $args['title_right'] ) {3427			$th_or_td_left  = empty( $args['title_left'] ) ? 'td' : 'th';3428			$th_or_td_right = empty( $args['title_right'] ) ? 'td' : 'th';3429 3430			$r .= "<tr class='diff-sub-title'>\n";3431			$r .= "\t<$th_or_td_left>$args[title_left]</$th_or_td_left>\n";3432			if ( $is_split_view ) {3433				$r .= "\t<$th_or_td_right>$args[title_right]</$th_or_td_right>\n";3434			}3435			$r .= "</tr>\n";3436		}3437 3438		if ( $args['title_left'] || $args['title_right'] ) {3439			$r .= "</thead>\n";3440		}3441 3442		$r .= "<tbody>\n$diff\n</tbody>\n";3443		$r .= '</table>';3444 3445		return $r;3446	}