php Adding seconds from a variable

Question

Im trying to add seconds to a result from a variable

So what happens is:

for example:

$eta = "14:12:00";   // this is an example from another result

then i have

$newseconds = "6" //where 6 is the seconds which randomly change

Now what i want to get working is that the newseconds whill be added to the eta

so that the end result will be 14:12:06

How can i do this?

I now have something like

echo date('H:i:s',strtotime('+12 seconds',strtotime($eta))).PHP_EOL

but the +12 seconds should then be coming from newseconds...

Thank you for the help

@Vidal timestamps are only machine-readable, often is more useful using human-readable date-time formats. — user2342558
– user2342558, Commented Dec 17, 2019 at 13:25
all solutions are using timestapms... strtotime returns a timestamp then they add the desired value and use date to format the timestamp to their desired format. ("H:i:s") — Vidal
– Vidal, Commented Dec 17, 2019 at 13:34
@Vidal yep, but the difference I'm talking about is the value that all of us can read in the code/Web: the human-readable format. — user2342558
– user2342558, Commented Dec 17, 2019 at 14:00

user2342558 · Accepted Answer · 2019-12-18 11:06:02Z

4

You can add seconds like this:

echo $newTime = date('H:i:s', strtotime("$eta + $newseconds seconds"));

output:

14:12:06

Try it here.

As you see, you can enclose the whole calculation between " ", so it's more readable.

Also, you need to call strtotime once, which makes the script faster.

You can learn more about strtotime in the official documentation.

edited Dec 18, 2019 at 11:06

answered Dec 17, 2019 at 13:10

user2342558

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Comments

Jay Blanchard · Accepted Answer · 2019-12-17 13:06:33Z

2

Just concat $newseconds to the added time string:

$eta = "14:12:00";
$newseconds = "6";
echo date('H:i:s',strtotime(+$newseconds.' seconds',strtotime($eta)));

Result 14:12:06 example

edited Dec 17, 2019 at 13:06

answered Dec 17, 2019 at 13:03

Jay Blanchard

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6 Comments

droopsnoot Over a year ago

"+" should be in quotes, shouldn't it?

Jay Blanchard Over a year ago

It doesn't have to be @droopsnoot sandbox.onlinephpfunctions.com/code/…

droopsnoot Over a year ago

Ah, learn something new every day. So glad I phrased it that way.

mighty_dev Over a year ago

Looks like you can remove the + as well(but will be less readable for humans).

Jay Blanchard Over a year ago

Nice find @vivek_23!

|

Marcel · Accepted Answer · 2019-12-17 13:37:33Z

0

Why not using PHP 's own DateTime class?

$seconds = 6;
$time = '14:12:00';

echo DateTime::createFromFormat('H:i:s', $time)
    ->modify('+' . $seconds . 'seconds')
    ->format('H:i:s');

Using the DateTime class enabled method chaining and you can use all methods this object includes. Read more in the documentation under PHP: DateTime - Manual.

edited Dec 17, 2019 at 13:37

answered Dec 17, 2019 at 13:30

Marcel

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