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# xdiff_file_diff_binary

(PECL)

xdiff_file_diff_binary -- Make binary diff of two files

## 说明

bool xdiff_file_diff_binary ( string file1, string file2, string dest )

Makes a binary diff of two files and stores the result in a file. This function works with both text and binary files.

## 参数

`file1`

`file2`

`dest`

  Path of the resulting file. Resulting file is in binary format.

## 返回值

如果成功则返回 `TRUE`，失败则返回 `FALSE`。

## 范例

例 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

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

## 参见

xdiff_string_diff_binary()

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