PHP Date Functions
Dealing with Date and Time in PHP
In this article we discuss some widely
used date functions in PHP.
Table of Contents
- date()
- getdate()
- strftime()
- time()
- maketime()
**All dates only works when you run PHP in server.**
1. date() Function in PHP
The inbuilt PHP function date() is the most widely used method of returning date values.
date_formats.php <?php
$today = date('d-m-y');
print $today ."<br>";
$today = date('d m y');
print $today."<br>";
$today = date('d~m~y');
print $today ."<br>";
$today = date('D M Y');
print $today ."<br>";
?> output: 27-09-2127 09 21
27~09~21
Mon Sep 2021
Time:
*** Current time depends on the timezone set in Apache.
Timezone can be set as follows:
date_default_timezone_set('Asia/Kolkata'); To display current timezone, use:
date_default_timezone_get()
To find the timezone of specific location use the following link:
Changing time zone to print local time.
display_time.php
<?php
print "<br>Current TimeZone: ". date_default_timezone_get();
date_default_timezone_set('Asia/Kolkata');
print "<br>TimeZone: ". date_default_timezone_get();
$time = date('h:i:s a'); //current time 10:45:17 am
print "<br>Time: ".$time;
?> output: Current TimeZone: Europe/Berlin
TimeZone: Asia/Kolkata
Time: 12:19:16 pm
Time in 24 hours format
$time = date('G:i T'); print "<br>". $time;
output:
12:21 IST
G Hours (0 through 23)
T Timezone abbreviation ex: Examples: EST, MDT ...
i Minutes2. strftime() Function in PHP
Format a local time/date according to locale settings
%c Preferred date and time stamp based on locale
print "<br>strftime=". strftime('%c'); outputs:
09/27/21 12:22:50
3. getdate() Function in PHP
<?php $date_array = getdate();
foreach ( $date_array as $key => $val ) {
print " $key = $val <br />";
}
print ("<br>");
print_r($date_array);
?> output:
seconds = 1minutes = 55
hours = 8
mday = 27
wday = 1
mon = 9
year = 2021
yday = 269
weekday = Monday
month = September
0 = 1632725701
Array ( [seconds] => 1 [minutes] => 55 [hours] => 8 [mday] => 27 [wday] => 1 [mon] => 9 [year] => 2021 [yday] => 269 [weekday] => Monday [month] => September [0] => 1632725701 )
you can create custom date using above array as shown below:
<?php
$date_array = getdate();
print "Today's date: ";
print $date_array['mday'] . "/". $date_array['mon'] . "/".$date_array['year'];
?>output:
Today's date: 27/9/2021
4. time() Function in PHP
time(): function generates a time in long integer
<?php
$t = time();
echo "<br />timestring :" .$t;
echo "<br />time format" .date ("l, F jS", $t);
?>output
timestring :1632729371
time formatMonday, September 27th
time format string:
week l (lowercase L),
month F,
date j (01 to 31)
date suffix S (nd,rd,th).5. maketime() Function in PHP
If it is your preferred date, then you can generate a time stamp using mktime().
mktime ( hour, minute, second, month, date, year)
<?php
$t = mktime(0, 0, 0, 1, 31, 2013); // custom datetime long integer
echo "<br /> datetime :".date ("l, F jS", $t);
?> output:datetime :Thursday, January 31st
<?php
$tomorrow = mktime(0, 0, 0, date("m") , date("d")+1, date("Y"));
echo "<br />Tomorrow :". $tomorrow; // 1377592773
echo "<br />Tomorrow :". date ("l, F jS Y ", $tomorrow);
$lastmonth = mktime(0, 0, 0, date("m")-1, date("d"), date("Y"));
echo "<br />Lastmonth:". date ("l, F jS Y ",$lastmonth);
$nextyear = mktime(0, 0, 0, date("m"), date("d"), date("Y")+1);
echo "<br />Nextyear:". date ("l, F jS Y ",$nextyear);
?>output:
Tomorrow :1632780000
Tomorrow :Tuesday, September 28th 2021
Lastmonth:Friday, August 27th 2021
nextyear:Tuesday, September 27th 2022
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