IMPRESS dotted_line CONTACT dotted_line search dotted_line Kontakt dotted_line sitemap dotted_line print
172 PHP-Resource users online

Switch to another languags Deutsch aktuelle Sprache Englisch
php-resource

PHP Manual


realpath

(PHP 4, PHP 5)

realpathReturns canonicalized absolute pathname

Description

string realpath ( string $path )

realpath() expands all symbolic links and resolves references to '/./', '/../' and extra '/' characters in the input path and return the canonicalized absolute pathname.

Parameters

path

The path being checked.

Note:

Whilst a path must be supplied, the value can be blank or NULL In these cases, the value is interpreted as the current directory.

Return Values

Returns the canonicalized absolute pathname on success. The resulting path will have no symbolic link, '/./' or '/../' components.

realpath() returns FALSE on failure, e.g. if the file does not exist.

Note:

The running script must have executable permissions on all directories in the hierarchy, otherwise realpath() will return FALSE.

Note: Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB.

Changelog

Version Description
5.3.0 Prior to this release, if only the last path component did not exist, realpath() would not fail on *BSD systems. realpath() now fails in this case.
5.0.0 Prior to this release, a blank or NULL path would cause realpath() to return the directory name of the script.

Examples

Example #1 realpath() example

<?php
chdir
('/var/www/');
echo 
realpath('./../../etc/passwd');
?>

The above example will output:

/etc/passwd

Example #2 realpath() on Windows

On windows realpath() will change unix style paths to windows style.

<?php
echo realpath('/windows/system32');
?>

The above example will output:

C:\WINDOWS\System32

See Also

  • basename() - Returns trailing name component of path
  • dirname() - Returns parent directory's path
  • pathinfo() - Returns information about a file path




Comments to the PHP manual
Write new comment
 



 

New Tutorial entries

Migration einer PHP 5 App auf PHP 7

Dieses PHP 7 Tutorial zeigt dir, wie du dein PHP5 Script auf PHP7 umstellst.

Berni | Category: PHP
PHP 7 Virtual Machine

Dieser Artikel zielt darauf ab, einen Überblick über die Zend Virtual Machine, wie es in PHP 7 gefunden wird.

Berni | Category: PHP
plotting masters - a professional guide - Teil II

Grafische Interpolation und Bestapproximation von numerischen Wertepaaren: Wir wollen Punkte auf einer Zeichenebene über verschiedene Verfahren miteinander verbinden.

EVAMasters | Category: PHP