Php – mktime VS time PHP4 VS PHP5

PHP

I download event calender from http://www.phpcodeworks.com/pec/installation. I am using PHP 5.3.X therefore browser said F:\xampp\htdocs\msj\functions.php so I replace :

$days = date("t", mktime(0,0,0,$month,1,$year));

with:

$days = date("t",` time(0,0,0,$month,1,$year));

but doing so each date goes 24 hours back as follows.

Image when using $days = date("t", mktime(0,0,0,$month,1,$year));:

enter image description here

Image when using $days = date("t", time(0,0,0,$month,1,$year));:

enter image description here

Best Answer

The mktime() function returns the time in seconds from Unix Epoch (January 1 1970 00:00:00 GMT) to the date and time provided as parameters.

The time() function retuns the time in seconds from Unix Epoch (January 1 1970 00:00:00 GMT) to the moment the function is run. There are no parameters to pass in.

So when browsing for a particular date, you will need to use mktime() instead of time(), time() will constantly return a different number every time you run it. Because of that, your calendar will change every time you view it (even if you are trying to view a particular date).

Hightlight:

mktime() - Time in seconds representing a specified date (see the documentation for the required parameters).

time() - Time in seconds representing now (there are no parameters for this function).

mktime() looks to be the appropriate function for this situation.

Related Solutions

Php – How to get the current date and time in PHP

The time would go by your server time. An easy workaround for this is to manually set the timezone by using date_default_timezone_set before the date() or time() functions are called to.

I'm in Melbourne, Australia so I have something like this:

date_default_timezone_set('Australia/Melbourne');

Or another example is LA - US:

date_default_timezone_set('America/Los_Angeles');

You can also see what timezone the server is currently in via:

date_default_timezone_get();

So something like:

$timezone = date_default_timezone_get();
echo "The current server timezone is: " . $timezone;

So the short answer for your question would be:

// Change the line below to your timezone!
date_default_timezone_set('Australia/Melbourne');
$date = date('m/d/Y h:i:s a', time());

Then all the times would be to the timezone you just set :)

Php – Finding days between 2 unix timestamps in php

You just have to calculate the number of seconds between the two dates, then divide to get days :

$numDays = abs($smallestTimestamp - $biggestTimestamp)/60/60/24;

Then, you can use a for loop to retrieve the dates :

$numDays = abs($smallestTimestamp - $biggestTimestamp)/60/60/24;

for ($i = 1; $i < $numDays; $i++) {
    echo date('Y m d', strtotime("+{$i} day", $smallestTimestamp)) . '<br />';
}

Again, if you don't know which timestamp is the smallest, you can use the min() function (second argument in strtotime).

Best Answer

Related Solutions

Php – How to get the current date and time in PHP

Php – Finding days between 2 unix timestamps in php

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