xdiff_string_diff

xdiff_string_diff

Make unified diff of two strings

string **xdiff_string_diff** string $old_data string $new_data int $context bool $minimal

Makes an unified diff containing differences between string and string and returns it. The resulting diff is human-readable. An optional parameter specifies how many lines of context should be added around each change. Setting parameter to true will result in outputting the shortest patch file possible (can take a long time). old_data``new_data``context``minimal

old_dataFirst string with data. It acts as "old" data.

new_dataSecond string with data. It acts as "new" data.

contextIndicates how many lines of context you want to include in the diff result.

minimalSet this parameter to true if you want to minimalize the size of the result (can take a long time).

Returns string with resulting diff or false if an internal error happened.

Voorbeeld: example

The following code makes unified diff of two articles.

<?php
$old_article = file_get_contents('./old_article.txt');
$new_article = $_REQUEST['article']; /* Let's say that someone pasted a new article to html form */

$diff = xdiff_string_diff($old_article, $new_article, 1);
if (is_string($diff)) {
    echo "Differences between two articles:\n";
    echo $diff;
}

?>

Opmerking: > This function doesn't work well with binary strings. To make diff of binary strings use /. xdiff_string_bdiff``xdiff_string_rabdiff

xdiff_string_patch