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xdiff_string_patch

Patch a string with an unified diff (PECL xdiff:0.2-1.4)
string xdiff_string_patch ( string str, string patch [, int flags [, string &error]] )

Patches a string with a unified patch string.

Parameters

str

The original string.

patch

The unified patch string.

flags

flags can be either XDIFF_PATCH_NORMAL (default mode, normal patch) or XDIFF_PATCH_REVERSE (reversed patch).

error

If provided then rejected parts are stored inside this variable.

Return Values

Returns the patched string, or FALSE on error.

Examples

Example 2637. xdiff_string_patch() example

The following code applies changes to some article.

<?php
$old_article
= file_get_contents('./old_article.txt');
$diff = $_SERVER['patch']; /* Let's say that someone pasted a patch to html form */

$errors = '';

$new_article = xdiff_string_patch($old_article, $diff, XDIFF_PATCH_NORMAL, $errors);
if (
is_string($new_article)) {
   echo
"New article:\n";
   echo
$new_article;
}

if (
strlen($errors)) {
   echo
"Rejects: \n";
   echo
$errors;
}

?>