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This document uses PHP Chinese website manual Release
(PECL xdiff >= 0.2.0)
xdiff_file_patch — Patch a file with an unified diff
$file
, string $patch
, string $dest
[, int $flags
= DIFF_PATCH_NORMAL
] )
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.
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.
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.
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 ;
}
?>