chmod Changes file mode &reftitle.description; boolchmod stringfilename intpermissions Attempts to change the mode of the specified file to that given in permissions. &reftitle.parameters; filename Path to the file. permissions Note that permissions is not automatically assumed to be an octal value, so to ensure the expected operation, you need to prefix permissions with a zero (0). Strings such as "g+w" will not work properly. ]]> The permissions parameter consists of three octal number components specifying access restrictions for the owner, the user group in which the owner is in, and to everybody else in this order. One component can be computed by adding up the needed permissions for that target user base. Number 1 means that you grant execute rights, number 2 means that you make the file writeable, number 4 means that you make the file readable. Add up these numbers to specify needed rights. You can also read more about modes on Unix systems with 'man 1 chmod' and 'man 2 chmod'. ]]> &reftitle.returnvalues; &return.success; &reftitle.notes; The current user is the user under which PHP runs. It is probably not the same user you use for normal shell or FTP access. The mode can be changed only by user who owns the file on most systems. ¬e.no-remote; &reftitle.seealso; chown chgrp fileperms stat