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PHP Manual
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is_link

(PHP 3, PHP 4 )

is_link -- Tells whether the filename is a symbolic link

Description

bool is_link ( string filename)

Returns TRUE if the filename exists and is a symbolic link.

Note: The results of this function are cached. See clearstatcache() for more details.

Tip: As of PHP 5.0.0 this function can also be used with some URL wrappers. Refer to Appendix J for a listing of which wrappers support stat() family of functionality.

See also is_dir(), is_file(), and readlink().

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