All tags/Diff

Side by side

Two versions of a function next to each other, line numbers on both sides and the changed words marked.

1 The data diff/side.php php

<?php

  $before = <<<'TEXT'
function total ( $rows ) {

  $sum = 0;

  foreach ( $rows as $row )
    $sum += $row ['price'];

  return $sum;

}
TEXT;

  $after = <<<'TEXT'
function total ( $rows, $tax = 0.21 ) {

  $sum = 0;

  foreach ( $rows as $row )
    $sum += $row ['price'] * $row ['quantity'];

  return round ( $sum * ( 1 + $tax ), 2 );

}
TEXT;

?>

2 The tag diff/side.pad pad

{diff $before, $after, side, from='total.php - before', to='total.php - after'}

3 The result rendered on the server

total.php - before		total.php - after
1	function total ( $rows ) {	1	function total ( $rows, $tax = 0.21 ) {
2		2
3	$sum = 0;	3	$sum = 0;
4		4
5	foreach ( $rows as $row )	5	foreach ( $rows as $row )
6	$sum += $row ['price'];	6	$sum += $row ['price'] * $row ['quantity'];
7		7
8	return $sum;	8	return round ( $sum * ( 1 + $tax ), 2 );
9		9
10	}	10	}