(PECL svn >= 0.1.0)
svn_checkout — Checks out a working copy from the repository
Checks out a working copy from the repository at repos to targetpath at revision revision .
String URL path to directory in repository to check out.
String local path to directory to check out in to
Note: Relative paths will be resolved as if the current working directory was the one that contains the PHP binary. To use the calling script's working directory, use realpath() or dirname(__FILE__).
Integer revision number of repository to check out. Default is HEAD, the most recent revision.
Any combination of SVN_NON_RECURSIVE and SVN_IGNORE_EXTERNALS.
如果成功则返回 TRUE，失败则返回 FALSE。
本函数是实验性的。本函数的行为，包括函数名称以及其它任何关于本函数的文档可能会在没有通知的情况下随 PHP 以后的发布而改变。使用本函数风险自担。
Example #1 Basic example
This example demonstrates how to check out a directory from a repository to a directory named calc:
<?php
svn_checkout('http://www.example.com/svnroot/calc/trunk', dirname(__FILE__) . '/calc');
?>
The dirname(__FILE__) call is necessary in order to convert the calc relative path into an absolute one. If calc exists, you can also use realpath() to retrieve an absolute path.