Getting a Timestamp
Let's start with a basic PHP function to get the timestamp, we'll use
time() to get the current timestamp and date to format the output.
The time stamp saved in
$now is similar to 1610246191, so we format it using
date('Y-m-d', $now) for a user friendly output.
The timestamp returned is in seconds, see the microtime function to get a timestamp including micro seconds.
Timestamp To Date Time Object
While we can use the
date function to format our date or timestamp, it isn't the object oriented way of doing it.
Let's create a DateTime object and set the timestamp.
We can then output the date and time using the
format method with the
'c' datetime parameter.
Formatting a Date
format method can format a date in many different ways, common formats are:
The PHP manual has many more date formats available.
Formatting a Time
DateTime class can also
format the same timestamp in time only format.
We use the H:i:s(Hour, Minute, Second) format in the code above.
Date with TimeZone
DateTime object can be set to use a specific time zone.
We create a new
DateTimeZone with a particular time zone and call the
setTimeZone method on our
The DateTimeZone class has many timezone options.
The PHP code example above displays the same timestamp using different time zones.
Converting a Timestamp to Date Time
Our final function is a combination of
DateTimeZone with 3 parameters: a timestamp, time zone and date/time format with default formatting.
Our custom PHP function
timeStampToDateTime takes a timestamp as first parameter, which could be the current timestamp or any other time stamp (maybe a timestamp from a db).
It uses the timezone and format to return a human readable date time string.
- We can use the
time() function to get the current timestamp and the
date function to format a timestamp.
DateTime class is the object oriented way of working with dates and times.
DateTimeZone class provides time zone functionality which can be used with the
DateTime class to work with dates and times.
setTimeStamp methods are the primary methods we can use to convert a timestamp to date/time.
- Related PHP functions: microtime