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(PECL)

xdiff_string_diff --  Make unified diff of two strings

Description

string xdiff_string_diff ( string str1, string str2 [, int context [, bool minimal]] )

xdiff_string_diff() makes unified diff of strings str1 and str2 . context indicated how many lines of context you want to include in diff result. Set minimal to TRUE if you want to minimalize size of diff (can take a long time).

Returns string with result or FALSE if an internal error happened.

Example 1. xdiff_string_diff() 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;
}

?>

Related Function(s)

xdiff_string_diff_binary()

xdiff_file_diff()