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HOME > PHP Manual > xdiff_file_patch - Patch a file with an unified diff

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xdiff Functions

PHP Manual

xdiff_file_patch

(PECL xdiff:0.2-1.4)

xdiff_file_patch — Patch a file with an unified diff

Description

mixed xdiff_file_patch ( string $file , string $patch , string $dest [, int $flags ] )

Patches a file with a patch and stores the result in a file. patch has to be an unified diff created by xdiff_file_diff()/xdiff_string_diff() function. An optional flags parameter specifies mode of operation.

Parameters

file

The original file.

patch

The unified patch file. It has to be created using xdiff_string_diff(), xdiff_file_diff() functions or compatible tools.

dest

Path of the resulting file.

flags

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

Starting from version 1.5.0, you can also use binary OR to enable XDIFF_PATCH_IGNORESPACE flag.

Return Values

Returns FALSE if an internal error happened, string with rejected chunks if patch couldn't be applied or TRUE if patch has been successfully applied.

Examples

Example #1 xdiff_file_patch() example

The following code applies unified diff to a file.


<?php
$old_version = 'my_script-1.0.php';
$patch = 'my_script.patch';

$errors = xdiff_file_patch($old_version, $patch, 'my_script-1.1.php');
if (is_string($errors)) {
   echo "Rejects:\n";
   echo $errors;
}

?>

Example #2 Patch reversing example

The following code reverses a patch.


<?php
$new_version = 'my_script-1.1.php';
$patch = 'my_script.patch';

$errors = xdiff_file_patch($new_version, $patch, 'my_script-1.0.php', XDIFF_PATCH_REVERSE);
if (is_string($errors)) {
   echo "Rejects:\n";
   echo $errors;
}

?>

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