How can I make an array once every half an hour?

Question

I need a list of such times in an array ...

12am 12:30am 1:00pm ... 

How can I do this with PHP?

Answer 1

Thanks for reopening the alex question.

This is a solution that should resonate with functional programmers.

 function halfHourTimes() { $formatter = function ($time) { if ($time % 3600 == 0) { return date('ga', $time); } else { return date('g:ia', $time); } }; $halfHourSteps = range(0, 47*1800, 1800); return array_map($formatter, $halfHourSteps); } 

Answer 2

Here's an improved version of the Alex function , which uses seconds for more accuracy:

 function hoursRange( $lower = 0, $upper = 86400, $step = 3600, $format = '' ) { $times = array(); if ( empty( $format ) ) { $format = 'g:i a'; } foreach ( range( $lower, $upper, $step ) as $increment ) { $increment = gmdate( 'H:i', $increment ); list( $hour, $minutes ) = explode( ':', $increment ); $date = new DateTime( $hour . ':' . $minutes ); $times[(string) $increment] = $date->format( $format ); } return $times; } 

So, to make an array of times at 1-hour intervals over a 24-hour period, use the default values:

 hoursRange(); 

Which will give you the following:

 Array ( [00:00] => 12:00 am [01:00] => 1:00 am [02:00] => 2:00 am [03:00] => 3:00 am [04:00] => 4:00 am [05:00] => 5:00 am [06:00] => 6:00 am [07:00] => 7:00 am [08:00] => 8:00 am [09:00] => 9:00 am [10:00] => 10:00 am [11:00] => 11:00 am [12:00] => 12:00 pm [13:00] => 1:00 pm [14:00] => 2:00 pm [15:00] => 3:00 pm [16:00] => 4:00 pm [17:00] => 5:00 pm [18:00] => 6:00 pm [19:00] => 7:00 pm [20:00] => 8:00 pm [21:00] => 9:00 pm [22:00] => 10:00 pm [23:00] => 11:00 pm ) 

Here are some examples:

 // Every 15 Minutes, All Day Long $range = hoursRange( 0, 86400, 60 * 15 ); // Every 30 Minutes from 8 AM - 5 PM, using Custom Time Format $range = hoursRange( 28800, 61200, 60 * 30, 'h:ia' ); 

You can view the working snippet in CodePad .

Answer 3

I decided it was better :)

 function hoursRange($lower = 0, $upper = 23, $step = 1, $format = NULL) { if ($format === NULL) { $format = 'g:ia'; // 9:30pm } $times = array(); foreach(range($lower, $upper, $step) as $increment) { $increment = number_format($increment, 2); list($hour, $minutes) = explode('.', $increment); $date = new DateTime($hour . ':' . $minutes * .6); $times[(string) $increment] = $date->format($format); } return $times; } 

Answer 4

Simplest solution

 $h = 0; while ($h < 24) { $key = date('H:i', strtotime(date('Ym-d') . ' + ' . $h . ' hours')); $value = date('h:i A', strtotime(date('Ym-d') . ' + ' . $h . ' hours')); $formatter[$key] = $value; $h++; } 

Result:

 Array ( [00:00] => 12:00 AM [01:00] => 01:00 AM [02:00] => 02:00 AM [03:00] => 03:00 AM [04:00] => 04:00 AM [05:00] => 05:00 AM [06:00] => 06:00 AM [07:00] => 07:00 AM [08:00] => 08:00 AM [09:00] => 09:00 AM [10:00] => 10:00 AM [11:00] => 11:00 AM [12:00] => 12:00 PM [13:00] => 01:00 PM [14:00] => 02:00 PM [15:00] => 03:00 PM [16:00] => 04:00 PM [17:00] => 05:00 PM [18:00] => 06:00 PM [19:00] => 07:00 PM [20:00] => 08:00 PM [21:00] => 09:00 PM [22:00] => 10:00 PM [23:00] => 11:00 PM ) 

Answer 5

This may be a more elegant way, but it takes time in seconds (which also makes it more flexible).

 function time_range( $start, $end, $step = 1800 ) { $return = array(); for( $time = $start; $time <= $end; $time += $step ) $return[] = date( 'g:ia', $time ); return $return; } 

Answer 6

Here is a more flexible version that does not require DateTime (since we still work with timestamps in seconds) .; -)

 function get_hours_range( $start = 0, $end = 86400, $step = 3600, $format = 'g:ia' ) { $times = array(); foreach ( range( $start, $end, $step ) as $timestamp ) { $hour_mins = gmdate( 'H:i', $timestamp ); if ( ! empty( $format ) ) $times[$hour_mins] = gmdate( $format, $timestamp ); else $times[$hour_mins] = $hour_mins; } return $times; } 

Answer 7

Here is my suggestion:

  $start = new \DateTime('00:00'); $times = 24 * 2; // 24 hours * 30 mins in an hour for ($i = 0; $i < $times-1; $i++) { $result[] = $start->add(new \DateInterval('PT30M'))->format('H:i A'); } print_r($result); 

I hope for this help.