PHP Array Exercises : Displays all the numbers between two numbers that are divisible by 4
PHP Array: Exercise-13 with Solution
Write a PHP script which displays all the numbers between 200 and 250 that are divisible by 4.
Note : Do not use any PHP control statement.
Sample Solution:
PHP Code:
<?php
echo implode(",",range(200,250,4))."\n";
?>
Sample Output:
200,204,208,212,216,220,224,228,232,236,240,244,248
Flowchart:
PHP Code Editor:
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Previous: Write a PHP function to change the specified array's all values to upper or lower case.
Next: Write a PHP script to get the shortest/longest string length from an array.
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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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