How To watch a file write in PHP?

Question

I want to make movement such as the tail command with PHP, but how may watch append to the file?

Answer 1

$handler = fopen('somefile.txt', 'r');

// move you at the end of file
fseek($handler, filesize( ));
// move you at the begining of file
fseek($handler, 0);

And probably you will want to consider a use of stream_get_line