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Full Discussion: UNIX vs windows, differences
Top Forums UNIX for Dummies Questions & Answers UNIX vs windows, differences Post 302911701 by Scott on Saturday 2nd of August 2014 02:39:03 PM
Old 08-02-2014
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Please use it to do some research instead of posting such basic questions here.
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REALPATH(3)								 1							       REALPATH(3)

realpath - Returns canonicalized absolute pathname

SYNOPSIS
string realpath (string $path) DESCRIPTION
realpath(3) expands all symbolic links and resolves references to '/./', '/../' and extra '/' characters in the input $path and returns the canonicalized absolute pathname. PARAMETERS
o $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(3) 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(3) 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(3) would not | | | fail on *BSD systems. realpath(3) now fails in | | | this case. | | | | | 5.2.1 | | | | | | | Prior to this version, realpath(3) returned | | | FALSE if $path is an empty string or NULL. | | | | +--------+---------------------------------------------------+ EXAMPLES
Example #1 realpath(3) example <?php chdir('/var/www/'); echo realpath('./../../etc/passwd'); ?> The above example will output: /etc/passwd Example #2 realpath(3) on Windows On windows realpath(3) will change unix style paths to windows style. <?php echo realpath('/windows/system32'); ?> The above example will output: C:WINDOWSSystem32 SEE ALSO
basename(3), dirname(3), pathinfo(3). PHP Documentation Group REALPATH(3)
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