In PHP, the function of ksort() function is to sort the array in ascending order by key name.

ksort() function sorts an array in ascending order by key. Returns TRUE on success and FALSE on failure.

Syntax

ksort(arr, flag)

Parameters

• arr - The array to sort.

• Flags -

  • 0 = SORT_REGULAR - Default. Compare items normally. Don't change the type.

  • 1 = SORT_NUMERIC - compares items numerically

  • 2 = SORT_STRING - compares items numerically Compare as strings

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

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

Return

ksort() function returns TRUE when successful and FALSE when failed.

Example

The following is an example

Live demonstration

<?php
$product = array("headphone"=>"10", "mouse"=>"24", "pendrive"=>"13");
ksort($product);
foreach ($product as $key => $val) {
   echo "$key = $val</p><p>";
}
?>

Output

headphone = 10
mouse = 24
pendrive = 13

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