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# xdiff_file_diff

(no version information, might be only in CVS)

xdiff_file_diff -- Make unified diff of two files

## Description

bool xdiff_file_diff ( string file1, string file2, string dest [, int context [, bool minimal]] )

xdiff_file_diff() makes unified diff of files file1 and file2 and stores result in file dest. context indicated how many lines of context you want to include in diff result. Set minimal to `TRUE` if you want to minimalize size of diff (can take a long time). Resulting file is human-readable.

> 注: This function doesn't work well with binary files. To make diff of binary files use xdiff_file_diff_binary().

成功回傳`TRUE`失敗回傳`FALSE`。

範例 1. xdiff_file_diff() example

The following code makes unified diff of two php files.

`<?php $old_version = 'my_script.php'; $new_version = 'my_new_script.php'; xdiff_file_diff($old_version, $new_version, 'my_script.diff', 2); ?>`

See also xdiff_string_diff().

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