... “Files and Directories,” we talk about files and how to open and close them, read from them and write to them, copy them, lock them, upload them, compress them, and more, all from within a PHP ... Explanation 1 Grant%read,%write, %and% execute%to%the%owner,%read %and% execute%to%the%group %and% the%others%(world). 2 Set%all%to%read,%write, %and% execute%on%all%files %and% in%the%current%working%directory. ... the filehandle, PHP provides the fopen() function. This function opens a file and returns a filehandle, and if it fails, returns false. It normally takes two arguments: a filename and a mode, the...