converting array values to time in php

Question

I have an array which contains time values in GMT. :

Array
(
    [0] => Array
        (
            [h] => 5
            [m] => 0
         )
)

Here Array[0][0] is the array for start time and Array[0][1] is the array for end time.

Now what I am creating time using date time as:

    $timezone = new DateTimeZone("Asia/Kolkata"); //Converting GMT to IST.

    $startTime = new DateTime();
    $startTime->setTime($Array[1][0]["hour"], $Array[1][0]["minute"]);
    $startTime->setTimezone($timezone);
    $startTime->format('h:i a');   //output 10:30 PM // Should be 10:30 AM

    $endTime = new DateTime();
    $endTime->setTime($Array[1][1]["hour"], $Array[1][1]["minute"]);
    $endTime->setTimezone($timezone);
    $endTime->format('h:i a');    //output 10:30 PM //ok

So My $startTime and $endTime both has the same value of `10:30` PM but I want the startTime to have value of `10:00 AM`because its period was `AM` in the array.

In your code you never access [period] inside the array. So, how is the program supposed to know which it is? — Geshode
– Geshode, Commented Dec 16, 2017 at 13:05

instead · Accepted Answer · 2017-12-16 13:41:59Z

1

When creating new Datetime object You have to specify timezone, because default value is taken from PHP configuration and this may not be set to GMT. So initialization of $startTime and $endTime should be:

$startTime = new DateTime('', new DateTimeZone('GMT'));
$endTime = new DateTime('', new DateTimeZone('GMT'));

Then when You are using setTime() You have to add 12 hours when PM period is taken. It should look like that:

$startTime->setTime($Array[1][0]["hour"] + ($Array[1][0]["period"] === 'PM' ? 12 : 0), $Array[1][0]["minute"]);
$endTime->setTime($Array[1][1]["hour"] + ($Array[1][1]["period"] === 'PM' ? 12 : 0), $Array[1][0]["minute"]);

Rest of the code looks fine, besides in You example $Array[1] is undefined. $Array[0] is set.

edited Dec 16, 2017 at 13:41

answered Dec 16, 2017 at 13:12

instead

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astrangeloop · Accepted Answer · 2017-12-16 13:20:36Z

1

You could also use DateTime::createFromFormat():

$d = DateTime::createFromFormat('g:m A', '5:30 PM', new DateTimeZone('GMT'));
$d->setTimeZone(new DateTimeZone('Asia/Kolkata'));
var_dump($d->format('Y-m-d H:i:s'));

Gives:

string(19) "2017-03-16 22:30:00"

You can create the string '5:30 PM' by combining the elements of your array. Please note that you must add a leading 0 to the minutes if they are less than 10, e.g: 9 minutes -> 09

answered Dec 16, 2017 at 13:20

astrangeloop

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