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This document uses PHP Chinese website manual Release
(PECL xdiff >= 0.2.0)
xdiff_file_diff — Make unified diff of two files
$old_file
, string $new_file
, string $dest
[, int $context
= 3
[, bool $minimal
= false
]] )
Makes an unified diff containing differences between old_file
and
new_file
and stores it in dest
file. The
resulting file is human-readable. An optional context
parameter
specifies how many lines of context should be added around each change.
Setting minimal
parameter to true will result in outputting the shortest
patch file possible (can take a long time).
old_file
Path to the first file. This file acts as "old" file.
new_file
Path to the second file. This file acts as "new" file.
dest
Path of the resulting patch file.
context
Indicates how many lines of context you want to include in diff result.
minimal
Set this parameter to TRUE
if you want to minimalize size of the result
(can take a long time).
成功时返回 TRUE
, 或者在失败时返回 FALSE
。
Example #1 xdiff_file_diff() example
The following code makes unified diff of two php files with context length of 2.
<?php
$old_version = 'my_script.php' ;
$new_version = 'my_new_script.php' ;
xdiff_file_diff ( $old_version , $new_version , 'my_script.diff' , 2 );
?>
Note:
This function doesn't work well with binary files. To make diff of binary files use xdiff_file_bdiff() / xdiff_file_rabdiff() function.