Change Today's Date and Time in PHP

Change today's date and time in php

The time() functions actually asks the system clock for the time, so you'd have to update the time of the server's system clock. A few things to keep in mind:

• This is done differently on a Unix server than a Windows server. If you want code compatible with both, you have to be careful
• Sometimes (especially in shared hosting situations) you aren't allowed to change the system time
• Changes to system time will remain after the script has executed unless you change it back later. Therefore you risk really screwing up the system clock.

If you want to change the time globally for an entire app, I recommend having a static variable $timeOffset and create your own time() function as follows:

function myTime(){
    global $timeOffset;
    return time()+$timeOffset;
}

If you've taken all of that into account and still want to change the system time, however, you would need to send a command to the shell using shell_exec()

In Windows, the code would look like this:

shell_exec("date 09-09-99"); // Use "date mm-dd-yy" or "time hh:mm:ss", respectively

In UNIX, according to the date man page, the code would look like:

shell_exec("date 0909hhmm1999"); // It says "date MMDDhhmiYYYY". I'm not sure how to set seconds, although I assume "mi" = "minutes"

NOW() function in PHP

You can use the date function:

date("Y-m-d H:i:s");

Is there a short way to modify DateTime to today but keep the previous stored time?

Not much better:

$newDate = new DateTime('today '.$date->format('H:i'));

Increase days to php current Date()

php supports c style date functions. You can add or substract date-periods with English-language style phrases via the strtotime function. examples...

$Today=date('y:m:d');

// add 3 days to date
$NewDate=Date('y:m:d', strtotime('+3 days'));

// subtract 3 days from date
$NewDate=Date('y:m:d', strtotime('-3 days'));

// PHP returns last sunday's date
$NewDate=Date('y:m:d', strtotime('Last Sunday'));

// One week from last sunday
$NewDate=Date('y:m:d', strtotime('+7 days Last Sunday'));

or

<select id="date_list" class="form-control" style="width:100%;">
<?php
$max_dates = 15;
$countDates = 0;
while ($countDates < $max_dates) {
    $NewDate=Date('F d, Y', strtotime("+".$countDates." days"));
    echo "<option>" . $NewDate . "</option>";
    $countDates += 1;
}
?>

Changing value of database to current date and time after clicking button

You are trying to set "status" twice. That semicolon and nested single quotes could cause some issues as well where you have the date() function.

I would recommend setting the date outside of the query and inserting it as a variable, like this:

$now = date('Y-m-d H:i:s');

$sql = "UPDATE `request` 
    SET `status` = '$now' 
    WHERE `reqnumber` = '$reqnumber';";

PHP date add 5 year to current date

Try with:

$end = date('Y-m-d', strtotime('+5 years'));

PHP date time greater than today

You are not comparing dates. You are comparing strings. In the world of string comparisons, 09/17/2015 > 01/02/2016 because 09 > 01. You need to either put your date in a comparable string format or compare DateTime objects which are comparable.

<?php
 $date_now = date("Y-m-d"); // this format is string comparable

if ($date_now > '2016-01-02') {
    echo 'greater than';
}else{
    echo 'Less than';
}

Demo

Or

<?php
 $date_now = new DateTime();
 $date2    = new DateTime("01/02/2016");

if ($date_now > $date2) {
    echo 'greater than';
}else{
    echo 'Less than';
}

Demo

Add number of days to a date

This should be

echo date('Y-m-d', strtotime("+30 days"));

strtotime

expects to be given a string containing a US English date format and will try to parse that format into a Unix timestamp (the number of seconds since January 1 1970 00:00:00 UTC), relative to the timestamp given in now, or the current time if now is not supplied.

while date

Returns a string formatted according to the given format string using the given integer timestamp or the current time if no timestamp is given.

See the manual pages for

• http://www.php.net/manual/en/function.strtotime.php
• http://www.php.net/manual/en/function.date.php

and their function signatures.

Insert current date in datetime format mySQL

If you're looking to store the current time just use MYSQL's functions.

mysql_query("INSERT INTO `table` (`dateposted`) VALUES (now())");

If you need to use PHP to do it, the format it Y-m-d H:i:s so try

$date = date('Y-m-d H:i:s');
mysql_query("INSERT INTO `table` (`dateposted`) VALUES ('$date')");

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