PHP Date Exercises : Last 6 months from the current month
PHP date: Exercise-22 with Solution
Write a PHP script to get the last 6 months from the current month.
Sample Solution:
PHP Code:
<?php
for ($i = 1; $i <= 6; $i++)
{
$months[] = date("Y-m%", strtotime( date( 'Y-m-01' )." -$i months"));
}
var_dump($months);
?>
Sample Output:
array(6) { [0]=> string(8) "2017-01%" [1]=> string(8) "2016-12%" [2]=> string(8) "2016-11%" [3]=> string(8) "2016-10%" [4]=> string(8) "2016-09%" [5]=> string(8) "2016-08%" }
Flowchart :
PHP Code Editor:
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PHP: Tips of the Day
How to Sort Multi-dimensional Array by Value?
Try a usort, If you are still on PHP 5.2 or earlier, you'll have to define a sorting function first:
Example:
function sortByOrder($a, $b) { return $a['order'] - $b['order']; } usort($myArray, 'sortByOrder');
Starting in PHP 5.3, you can use an anonymous function:
usort($myArray, function($a, $b) { return $a['order'] - $b['order']; });
And finally with PHP 7 you can use the spaceship operator:
usort($myArray, function($a, $b) { return $a['order'] <=> $b['order']; });
To extend this to multi-dimensional sorting, reference the second/third sorting elements if the first is zero - best explained below. You can also use this for sorting on sub-elements.
usort($myArray, function($a, $b) { $retval = $a['order'] <=> $b['order']; if ($retval == 0) { $retval = $a['suborder'] <=> $b['suborder']; if ($retval == 0) { $retval = $a['details']['subsuborder'] <=> $b['details']['subsuborder']; } } return $retval; });
If you need to retain key associations, use uasort() - see comparison of array sorting functions in the manual
Ref : https://bit.ly/3i77vCC
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