(PHP 5 >= 5.2.2)
SplFileInfo::getRealPath — Gets absolute path to file
This method expands all symbolic links, resolves relative references and returns the real path to the file.
此函数没有参数。
Returns the path to the file.
Example #1 SplFileInfo::getRealPath() example
<?php
$info = new SplFileInfo('/..//./../../'.__FILE__);
var_dump($info->getRealPath());
$info = new SplFileInfo('/tmp');
var_dump($info->getRealPath());
?>
以上例程的输出类似于：
string(28) "/private/tmp/phptempfile.php" string(12) "/private/tmp"
josef dot vlk dot d at gmail dot com (2012-10-15 03:52:09)
It seems that (at least for PHP 5.4.6), this method returns false if the file does not exist.