(PECL svn >= 0.1.0)
svn_diff — Recursively diffs two paths
$path1
, int $rev1
, string $path2
, int $rev2
) : array
Recursively diffs two paths, path1 and
path2.
Note:
This is not a general-purpose diff utility. Only local files that are versioned may be diffed: other files will fail.
path1First path to diff. This can be a URL to a file/directory in an SVN repository or a local file/directory path.
Note: 相对路径将会以PHP执行文件所在目录作为当前工作目录进行解析。如果希望依据脚本所在目录解析, 使用realpath() 或 dirname(__FILE__)。
If a local file path has only backslashes and no forward slashes, this extension will fail to find the path. Always replace all backslashes with forward slashes when using this function.
rev1
First path's revision number. Use SVN_REVISION_HEAD
to specify the most recent revision.
path2
Second path to diff. See path1 for description.
rev2
Second path's revision number. See rev1
for description.
Returns an array-list consisting of two streams: the first is the diff output
and the second contains error stream output. The streams can be
read using fread(). Returns false or null on
error.
The diff output will, by default, be in the form of Subversion's custom unified diff format, but an » external diff engine may be used depending on Subversion's configuration.
Example #1 Basic example
This example demonstrates the basic usage of this function, and the retrieval of contents from the stream:
<?php
list($diff, $errors) = svn_diff(
'http://www.example.com/svnroot/trunk/foo', SVN_REVISION_HEAD,
'http://www.example.com/svnroot/branches/dev/foo', SVN_REVISION_HEAD
);
if (!$diff) exit;
$contents = '';
while (!feof($diff)) {
$contents .= fread($diff, 8192);
}
fclose($diff);
fclose($errors);
var_dump($contents);
?>
以上例程会输出：
Index: http://www.example.com/svnroot/trunk/foo =================================================================== --- http://www.example.com/svnroot/trunk/foo (.../foo) (revision 23) +++ http://www.example.com/svnroot/branches/dev/foo (.../foo) (revision 27) // further diff output
Example #2 Diffing two revisions of a repository path
This example implements a wrapper function that allows a user to easily diff two revisions of the same item using an external repository path (the default syntax is somewhat verbose):
<?php
function svn_diff_same_item($path, $rev1, $rev2) {
return svn_diff($path, $rev1, $path, $rev2);
}
?>
Example #3 Portably diffing two local files
This example implements a wrapper function that portably diffs two local files, compensating for the realpath() fix and the backslashes bug:
<?php
function svn_diff_local($path1, $rev1, $path2, $rev2) {
$path1 = str_replace('\\', '/', realpath($path1));
$path2 = str_replace('\\', '/', realpath($path2));
return svn_diff($path1, $rev1, $path2, $rev2);
}
?>
此函数是实验性的。此函数的表象，包括名称及其相关文档都可能在未来的 PHP 发布版本中未通知就被修改。使用本函数风险自担。