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PHP Manual
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chgrp

(PHP 3, PHP 4 )

chgrp -- Changes file group

Description

bool chgrp ( string filename, mixed group)

Attempts to change the group of the file filename to group (specified by name or number). Only the superuser may change the group of a file arbitrarily; other users may change the group of a file to any group of which that user is a member.

Returns TRUE on success or FALSE on failure.

See also chown() and chmod().

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