note 57016 added to function.realpath

Here's another function that resolves references to '/./', '/../' and extra '/' characters in the input path and returns the canonicalized pathname. <?php function cleanPath($path) { $result = array(); // $pathA = preg_split('/[\/\\\]/', $path); $pathA = explode('/', $path); if (!$pathA[0]) $result[] = ''; foreach ($pathA AS $key => $dir) { if ($dir == '..') { if (end($result) == '..') { $result[] = '..'; } elseif (!array_pop($result)) { $result[] = '..'; } } elseif ($dir && $dir != '.') { $result[] = $dir; } } if (!end($pathA)) $result[] = ''; return implode('/', $result); } echo 'input: ', $path = '..//./../dir4//./dir5/dir6/..//dir7/', '<br />'; echo 'output: ', cleanPath($path), '<br />'; ?> Will return: input: ..//./../dir4//./dir5/dir6/..//dir7/ output: ../../dir4/dir5/dir7/ ---- Manual Page -- http://www.php.net/manual/en/function.realpath.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+57016 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+57016&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+57016&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+57016&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+57016&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+57016&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+57016&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+57016&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+57016&report=yes Search -- http://master.php.net/manage/user-notes.php