PHP arsort() Function

PHP arsort Function


Definition:

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

The keys are preserved, i.e. the key-to-value mapping will remain unchanged by the sort operation.

Syntax

  arsort(array, sorttype)

Parameter:

Parameter Description
array Required. Specifies the array to sort
sorttype Optional. Specifies how to compare the array elements/items. Possible values:
  • 0 = SORT_REGULAR - Default. Compare items normally (don't change types)
  • 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 -

Example : we can see below example Sort an associative array in descending order, according to the value:

Output :

Key=House, Value=33
Key=Designing, Value=27
Key=Web, Value=25

Tip: The arsort() and asort() functions mainly used for sorting associative arrays by value,       whereas krsort() and ksort() functions used for sorting associative arrays by key.