<?php
/*
* ***************************************************************************************************
*
* File name: example3.php
*
* Copyright © 2015 Alessandro Quintiliani
*
* This file is part of LogDeltaTime.
*
* LogDeltaTime is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* LogDeltaTime is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LogDeltaTime. If not, see <http://www.gnu.org/licenses/>.
*
* ***************************************************************************************************
*/
// DEBUG OF example3.php WITH ONLY LOG STATEMENTS DIFFERING AT LEAST 'N' SECONDS BETWEEN TWO CONSECUTIVE STEPS ARE TRACKED TO THE LOG FILE
// (invoked methods: setDeltaMin, wlog, end)
const MYVAR_VALUE = 10;
const DELTA_MIN_TO_TRACK = 2; // minimum time difference in seconds between two consecutive log messages
const MAX_EXECUTION_DELAY = 4; // max delay execution script
include ("Class.LogDeltaTime.php");
$LOGDIR = 'log';
$LOGFILE = 'logexample3.txt';
$log = new LogDeltaTime ( $LOGDIR, $LOGFILE, 1 ); // replace the value of the third parameter with 2 to append the statements to logexample3.txt after each run of example3.php
$log->wlog ( "first statement" );
$log->wlog ( "initializing myvar variable" );
$myvar = 24;
$log->wlog ( "value of myvar: $myvar" );
$log->setDeltaMin ( DELTA_MIN_TO_TRACK ); // from this point on, only those statements having at least DELTA_MIN_TO_TRACK secs elapsed between each other will be written to the log file
sleep ( 1 ); // this instruction simulates any block code delaying the execution of 1 second
$log->wlog ( "this log message won't be written to the log file because the time difference since setDeltaMin is less than " . DELTA_MIN_TO_TRACK . " seconds" );
sleep ( 2 ); // this instruction simulates any block code delaying the execution of 2 seconds
$log->wlog ( "this log message will be written to the log file because the time difference since the previous statement is at least " . DELTA_MIN_TO_TRACK . " seconds" );
if ($myvar > MYVAR_VALUE) {
$log->wlog ( "first log message in the 'if' block having myvar as a control variable" );
$log->wlog ( "log message placed before the sleep(x) instruction where x is varying randomly between 1 and " . MAX_EXECUTION_DELAY . " seconds" );
sleep ( rand ( 1, MAX_EXECUTION_DELAY ) ); // this instruction simulates any block code delaying the execution to a random value between 1 and MAX_EXECUTION_DELAY seconds
$log->wlog ( "log message placed after the sleep(x) instruction where x is varying randomly between 1 and " . MAX_EXECUTION_DELAY . " seconds: will this message be written to the log file?" );
$log->wlog ( "last message log in the 'if' block having myvar=$myvar" );
}
$log->wlog ( "exit from the 'if' block having myvar as a control variable" );
$log->wlog ( "log message before sleep(2)" );
sleep ( 2 ); // this instruction simulates any block code delaying the execution script of 2 seconds
$log->wlog ( "log message after sleep(2): this will be written to the log file" );
$log->end ();
unset ( $log );
?>
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