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PHP Reference

Quick Reference

The PHP arsort() function sorts an associative array in descending order, according to the value.

				
					<?php
$a = array('Num 1' => '12', 'Num 2' => '6', 'Num 3' => '18');

arsort($a);
print_r($a);
?>

Output

				
					Array ( [Num 3] => 18 [Num 1] => 12 [Num 2] => 6 )

Syntax

				
					arsort(array, sorttype)

Parameters

ParameterDescription
arraySpecifies an array (required)
sorttypeSpecifies how to compare the array elements/items:

  • 0 = SORT_REGULAR - Compare items normally (don't change types) (default)

  • 1 = SORT_NUMERIC - Compare items numerically

  • 2 = SORT_STRING - Compare items as strings

  • 3 = SORT_LOCALE_STRING - Compare items as strings, based on current locale

  • 4 = SORT_NATURAL - Compare items as strings using natural ordering

  • 5 = SORT_FLAG_CASE - Can be combined (bitwise OR) with SORT_STRING or SORT_NATURAL to sort strings case-insensitively

We’d like to acknowledge that we learned a great deal of our coding from W3Schools and TutorialsPoint, borrowing heavily from their teaching process and excellent code examples. We highly recommend both sites to deepen your experience, and further your coding journey. We’re just hitting the basics here at 1SMARTchicken.

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PHP NOTES:

  • When using PHP, single or double quotation marks are acceptable and work identically to one another; choose whichever you prefer, and stay consistent
  • Arrays count starting from zero NOT one; so item 1 is position [0], item 2 is position [1], and item 3 is position [2] … and so on

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