PHP Doku:: Liefert das Ziel eines symbolischen Links - function.readlink.html

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mookowg at gmail dot com
3.12.2010 1:36
In case anyone was getting confused:
     This is NOT the coreutil "readlink".
realpath("./path/of/file") is equivalent to readlink -e ./path/of/file
which FYI i think is a terrible design choice choice, since the functionality
of readline -f is hard to mimic, but readline -e is NOT
MarkAndrewSlade at gmail dot com
10.06.2009 21:35
This will trigger a warning and return false if you pass it a non-symlink.  If the file doesn't exist, it will trigger a differently worded warning.

mslade@jupiter ~$ touch a
mslade@jupiter ~$ ln -s a b
mslade@jupiter ~$ ls -l {a,b}
-rw------- 1 mslade mslade 0 2009-06-10 15:27 a
lrwxrwxrwx 1 mslade mslade 1 2009-06-10 15:27 b -> a
mslade@jupiter ~$ php -r "var_dump(readlink('b'));"
string(1) "a"
mslade@jupiter ~$ php -r "var_dump(readlink('a'));"

Warning: readlink(): Invalid argument in Command line code on line 1
mslade@jupiter ~$ php -r "var_dump(readlink('c'));"

Warning: readlink(): No such file or directory in Command line code on line 1

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