# xdiff_file_diff_binary

(PECL xdiff >= 0.2.0)

xdiff_file_diff_binary — Alias of xdiff_file_bdiff

### 说明

xdiff_file_diff_binary ( string `$old_file` , string `$new_file` , string `$dest` ) : bool

Makes a binary diff of two files and stores the result in a patch file. This function works with both text and binary files. Resulting patch file can be later applied using xdiff_file_bpatch().

Starting with version 1.5.0 this function is an alias of xdiff_file_bdiff().

### 参数

`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. Resulting file contains differences between "old" and "new" files. It is in binary format and is human-unreadable.

### 返回值

成功时返回 `TRUE`， 或者在失败时返回 `FALSE`。

### 范例

Example #1 xdiff_file_diff_binary() example

The following code makes binary diff of two archives.

    <?php
    $old_version = 'my_script_1.0.tgz';
    $new_version = 'my_script_1.1.tgz';

    xdiff_file_diff_binary($old_version, $new_version, 'my_script.bdiff');
    ?>

### 注释

> Note:

> Both files will be loaded into memory so ensure that your memory_limit is set high enough.

### 参见

- xdiff_file_bdiff() - Make binary diff of two files
- xdiff_file_bpatch() - Patch a file with a binary diff