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

Parameter Description
array Required. Specifies an array
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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