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php-db | 2004071

Re: [PHP-DB] endless loop / running as a service? From: wuffo (wuffo <email protected>)
Date: 07/13/04

Hi,

maybe something like this would do:
 ( warning: it is just a sketch,and probably will not run )

    1. there are 4 files on the server:
        a) check-flag
        b) start-watch.php
        c) stop-watch.php
        d) watch.php

    2. watch.php:

        // in the check-flag file we have a flag which turns off/on the
checker
        $flag_file = 'check-flag';
        $fd = fopen($flag_file, 'r');
        $go = fread($fd); // we shall get 0 - stop, 1 - go

        // the loop runs as long as there is 1 in 'check-flag' file
        while ( $go ) {

          $dir_state = get_the_state_of_the_dir();
          $old_dir_state = get_previous_state_of_the_dir();

          if( compare_the_dirs( $dir_state, $old_dir_state)) {
                 // the state is different - something has been uploaded
                // do somethnig ....
            }

         $result = write_previous_dir_state($old_dir_state);

         rewind_the_file_position_to_start($fd);
        $go = fread($fd);

    } // end of the loop

3. start-watch.php

if( check_the_identity_and_privileges_of_the_user() ) {
    set_flag_in_the_file( 'check-flag', 1);
}

4. stop-watch.php

  if( check_the_identity_and_privileges_of_the_user() ) {
    set_flag_in_the_file( 'check-flag', 0);
}

it is just a rough idea written down with pseudo-php, but You shall get the
idea

greetings.

Marcin 

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