Is there any way to recognize if a folder is a junction point in PHP on a windows system? Or even get the path / name of the target?
is_link or realpath do not support it.
Thanks!
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If you know the shell command you have at least a [workaround](http://php.net/manual/en/language.operators.execution.php). – Álvaro González Jul 29 '15 at 09:01
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Yes, thought of using some command, but don't know one yet. – lsblsb Jul 29 '15 at 09:56
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maybe helpful: https://github.com/contao-community-alliance/composer-plugin/issues/34 – c33s Mar 27 '16 at 00:08
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Yes, by using lstat(), see http://php.net/manual/de/function.lstat.php
It returns an array with pieces of information about the filename (dir/junction). You need compare the key mode against a certain bitmask.
mode equals st_mode in the underlying OS layer.
The _stat struct is defined in SYS\STAT.H. It includes a field st_mode.
About the st_mode bitmask:
Bit mask for file-mode information. The _S_IFDIR bit is set if path specifies a directory; the _S_IFREG bit is set if path specifies an ordinary file or a device. User read/write bits are set according to the file's permission mode; user execute bits are set according to the filename extension.
* #define _S_IFDIR 0x4000
* #define _S_IFREG 0x8000
Quoted from: https://learn.microsoft.com/en-us/cpp/c-runtime-library/reference/stat-functions?view=vs-2017
PHP Implementation for isJunction(): https://github.com/composer/composer/blob/master/src/Composer/Util/Filesystem.php#L654-L678
Warning This is very fragile after the lastest changes to Windows. See https://www.bountysource.com/issues/53997655-composer-update-is-deleting-pathed-windows-symlinked-local-repos-again-ref-4955
Jens A. Koch
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