PHP - Function ksort()


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Syntax

ksort ( $array, $sort_flag );

Definition and Usage

The ksort() function sorts an array by key, maintaining key to data correlations. This is useful mainly for associative arrays.

Parameters

Sr.No Parameter & Description
1

array

Required. Specifies an array

2

sort_flag

Optional. Specifies how to sort the array values. Possible values −

  • SORT_REGULAR − Default. Treat values as they are (don't change types)
  • SORT_NUMERIC − Treat values numerically
  • SORT_STRING − Treat values as strings
  • SORT_LOCALE_STRING − Treat values as strings, based on local settings

Return Value

This function returns TRUE on success, or FALSE on failure.

Example

Try out following example −

<?php
   $transport = array( a=>'foot', b=>'bike', c=>'car', d=>'plane');
   ksort($transport);
   
   print_r($transport);
?> 

This will produce the following result −

Array ( [a] => foot [b] => bike [c] => car [d] => plane ) 

php_function_reference.htm

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