chmodPHP ManualPrevNextchmodchmod -- Change file modeDescriptionint chmod(string filename, int mode); Attempts to change the mode of the file specified by filename to that given in mode. Note that mode is not automatically assumed to be an octal value. To ensure the expected operation, you need to prefix mode with a zero (0): 1  2 chmod( "/somedir/somefile", 755 ); // decimal; probably incorrect 3 chmod( "/somedir/somefile", 0755 ); // octal; correct value of mode 4  Returns true on success and false otherwise. See also chown() and chgrp(). Note: This function does not work on Windows systems PrevHomeNextchgrpUpchown