PHP - Php Difference Between Dates

This is going to seem like a stupid question but I'm curious about it anyway.

Isn't isset and !empty do the same?

Considering security, is there a disadvantage in using $_REQUEST?

I am working with wordpress and I see a lot of "if" statements done like this

if(condition):
    do something
endif;


I have always done it like so

if(condition) {
  do something

}

what is the difference? does the first method have any advantages over the second method?

Actually what's the difference between
Code: [Select]
if(...)
and
Code: [Select]
if(isset(...)

Hi guys,

I am trying to create a program which manages campaigns.
each campaign has a start date and and end date.
a user has to enter data releated to the campaign everyday

example
start date: 10-1-2011
end date: 17-1-2011

now all this information is stored in 2 tables
1st table is "campaigns" this stores the campaign name, start date and end date
and 2nd table is "campaign_data" this table stored the data for each campaign and also date of when that data was entered

my question is, if the user did not enter data on 11-1-2011 how will I know this, keeping in mind the month diffrence which can accur if the length of the campign was 2 month long?


table:
campaigns
fields:
id | campaign_name | start_date | end_date

table:
campaign_data
fields:
id | campaign_id | date | page

Thank you

Hey guys,

What I'm trying to do is set 2 dates.  Today's date and then a date 14 days from now.  However, I want it to increase the month if by adding 14 days will bring me to the next month, same with the year.

I have this, but it doesn't increment the month or year.

$week = mktime(11, 59, 59, date("m"), date("d")+14, date("y"));
$date =  date("Y-m-d H:i:s", $week);

Hi,
So I only want my users to be able to perform certain tasks each 12 hours.
This is the code I use:
Code: [Select]
function canVote($ip, $vote_id, $updateTimer = true){
$time = date("Y-m-d H:i:s");

$this->CI->db->where('vote_id', $vote_id);
$this->CI->db->where('user_ip', $ip);
$this->CI->db->from('votes_voters');
$count =  $this->CI->db->count_all_results();
/*$count = $this->CI->db
->where('vote_id =', $vote_id)
->where('user_ip =', $ip)
->from('votes_voters')
-count_all_results();*/

$row = $this->CI->db
->where('vote_id =', $vote_id)
->where('user_ip =', $ip)
->get('votes_voters')
->row();

if($count == 0){
$data = array(
   'vote_id' => $vote_id,
   'user_ip' => $ip,
   'last_vote' => $time
);

$this->CI->db->insert('votes_voters', $data);
return true;
}
else{
$last_vote = $row->last_vote;
if($last_vote + strtotime("12 hours") < $time){
return false;
}
else{
if($updateTimer = true){
$data = array(
               'last_vote' => $time,
            );

$this->CI->db->where('vote_id', $vote_id);
$this->CI->db->where('user_ip', $ip);
$this->CI->db->update('votes_voters', $data);
}
return true;
}
}
}
Apparently the failing bit is this:
Code: [Select]
if($last_vote + strtotime("12 hours") < $time){
return false;
}
I believe you can guess what I'm trying to do here, if variable 1 + 12 hours is smaller than variable 2, then return false.
Any help is much appreciated.

i want to created a case like the following need help with the syntax:
Code: [Select]
switch (true)
{
case($fromdate-$todate==17-04-2001-25-04-2011):
echo $finalprice = $result;
        break;
}

Hey, I have just recently coded a forum and my topics are ordered by date. This means if there is a topic at 4pm and then there is another topic made at 4:01pm the topic which was posted at 4:01pm will be listed at the top.

I know how to add timezones but there is bit of a problem,  if  person from the UK posts a topic and his/hers timezone is set to:

date_default_timezone_set('Europe/London');()

this means the time at which the topic was posted will be 20:36pm (Just a randome time example).

However if someone posted a topic from america/los_angeles one hour before the one above his/her time will be 11:36 am. Even though this topic was posted one hour before the UK post. The UK topic will override it because it is 8:36pm. In fact, all UK topics will show up at the top and all the america/los_angeles topics will show bellow.

How do I slove this problem? I just don't get it even tough I looked online.

Please help, thanks.

Problem;  Need to check to see if someone who requested a password re-set has done so with in 24hrs.  IF not- then it needs to prompt them to re-submit the request and deletes the previous re-submit code sent to them in their email.

I have everything else figured out (deleting re-set code) but I have not figured the checking of if they have done so within the 24hr time period.  Please tell me if the code below will accurately tell me if they complied with the 24 hour rule.

$time1 = '1284675867';// logged at the time of password re-set request.  Retrieved from database
$time2 = time();// captured in script when they actually re-set their password
$difference_between = $time2 - $time1;
if($difference_between >= '5,200,000')
{
echo "Sorry- you have exceeded the 24 hr rule and need to re-submit your request";
}


Compared to all that I have seen.........it appears rather simplistic.  Am I missing something or will this simple approach work?

Hi,

I am trying to get the difference in time in mins, hours etc thingy. Now, for some reason I cannot get the right minutes or hours difference between two time stamps. Here is my code:

Code: [Select]
$postedTime=strtotime($comment_from_db->date_posted);
$currentTime=time();
$mins=floor(($currentTime-$postedTime)/60);
if($mins<=1){
echo $mins." minute ago by";
}elseif($mins>1){
if($mins>60){
$hrs=floor($mins/60);
if($hrs>24){
}else{
if($hrs<2){
echo $hrs. " hour ago by";
}else{
echo $hrs. " hours ago by";
}
}
}else{
echo $mins." minutes ago by";
}
}
Now, for a comment posted like 25 mins ago it shows it was posted 4 hours ago. For a comment posted around 10 hours ago it shows it was posted 16 hours ago.

What is the problem here?

I was doing a test and checked the time in seconds after an interval of 2 mins. Here are the results:
Comment posted: 1306669490
Current time: 1306683920

The difference is around 14430. This is not equal to 2 minutes. So, I am starting to think if the time I am getting is wrong? Should it have 10 digits? or less? I am not sure what is going on. Please, advice.

Thanks.

hiii,

Im wanting to calculate the time difference between $out2 and $in2 and out put it into a spreadsheet:
Code: [Select]
$m=0;
while ($m < $num9) {
$fullname=mysql_result($result9,$m,"username");
$date=mysql_result($result9,$m,"date");
$in1=mysql_result($result9,$m,"in1");
$out1=mysql_result($result9,$m,"out1");
$in2=mysql_result($result9,$m,"in2");
$out2=mysql_result($result9,$m,"out2");

$out2f=date("G:i:s",strtotime($out2));
$in2f=date("G:i:s",strtotime($in2));

echo  date("D",strtotime($date)). "\t" . $fullname . "\t" . $in1 . "\t". $out1 . "\t" . $in2 . "\t" . $out2 . "\t" . date("G:i:s",strtotime($out2f-$in2f)) . "\t" . "\n";
$m++;
}


header("Content-disposition: attachment; filename=spreadsheet.xls");
why does this code return 00:00:00 ?

For some reason when I echo $diff and $time_remaining it ALWAYS echos with values of 3 and 7 and not sure why.

Code: [Select]
$lock_date = $row['lock_date'];
                    $current_time = time();
                   
                    // Find out if user is locked out of their account
                    if (($lock_date != "0000-00-00 00:00:00") && strtotime($lock_date) < $current_time) {
                       
                        $lock_date = strtotime($lock_date);
                        $diff = $current_time - $lock_date;                       
                        $diff = floor($diff/6000);

                        // Take minutes and perform tasks
                        if ($diff <= 10) {
                           
                            // Calculate time remaining
                            $time_remaining = 10 - $diff;

                            // Account locked error
                            $errors = true;
                            $message = "Account is locked! Must wait " .$time_remaining." minutes to log in again!";
                           
                            $output = array('errorsExist' => $errors, 'message' => $message);
                           
                        } else {
                           
                            // Clear the lock
                            $query = "UPDATE users_logins_attempts SET lockDate = NULL, ip_address = NULL, failed_logins = 0 WHERE users_id = '".$users_id."'";
                            $result = mysqli_query($dbc,$query);
                           
                            // Account locked error
                            $errors = true;
                            $message = "Account is unlocked. You may now try to log in again!";
                           
                            $output = array('errorsExist' => $errors, 'message' => $message);
                           
                        }
                       
                    }