$old_file, string $new_file, string $dest): boolMakes 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().
old_filePath to the first file. This file acts as "old" file.
new_filePath to the second file. This file acts as "new" file.
destPath of the resulting patch file. Resulting file contains differences between "old" and "new" files. It is in binary format and is human-unreadable.
成功时返回 true， 或者在失败时返回 false。
示例 #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');
?>注意:
Both files will be loaded into memory so ensure that your memory_limit is set high enough.