The ksort() function is an inbuilt function in PHP which is used to sort an array in ascending order according to its key values. It sorts in a way that the relationship between the indices and values is maintained.
Syntax:
bool ksort( $array, $sorting_type )
Parameters: This function accepts two parameters as mentioned above and described below:
- $array: This parameter specifies the array which needs to be sorted. It is a mandatory parameter.
-
$sorting_type: This is an optional parameter. There are different sorting types which are discussed below:
- SORT_REGULAR: The value of $sorting_type is SORT_REGULAR then items are compare normally.
- SORT_NUMERIC: The value of $sorting_type is SORT_NUMERIC then items are compared numerically.
- SORT_STRING: The value of $sorting_type is SORT_STRING then items are compared as a string.
- SORT_LOCALE_STRING: The value of $sorting_type is SORT_STRING then items are compare as strings, based on the current locale.
Return Value: This function returns True on success or False on failure.
Below programs illustrate the ksort() function in PHP.
Program 1:
<?php // PHP program to illustrate // ksort()function // Input different array elements $arr = array ( "13" => "ASP.Net" ,
"12" => "C#" ,
"11" => "Graphics" ,
"4" => "Video Editing" ,
"5" => "Photoshop" ,
"6" => "Article" ,
"4" => "Placement" ,
"8" => "C++" ,
"7" => "XML" ,
"10" => "Android" ,
"1" => "SQL" ,
"2" => "PL/Sql" ,
"3" => "End" ,
"0" => "Java" ,
);
// Implementation of ksort() ksort( $arr );
// for-Loop for displaying result foreach ( $arr as $key => $val ) {
echo "[$key] = $val" ;
echo "\n" ;
} ?> |
Output:
[0] = Java [1] = SQL [2] = PL/Sql [3] = End [4] = Placement [5] = Photoshop [6] = Article [7] = XML [8] = C++ [10] = Android [11] = Graphics [12] = C# [13] = ASP.Net
Program 2:
<?php // PHP program to illustrate // ksort function // Input different array elements $arr = array ( "z" => 11,
"y" => 22,
"x" => 33,
"n" => 44,
"o" => 55,
"b" => 66,
"a" => 77,
"m" => 2,
"q" => -11,
"i" => 3,
"e" => 56,
"d" => 1,
);
// Implementation of ksort ksort( $arr );
// for-Loop for displaying result foreach ( $arr as $key => $val ) {
echo "[$key] = $val" ;
echo "\n" ;
} ?> |
Output:
[a] = 77 [b] = 66 [d] = 1 [e] = 56 [i] = 3 [m] = 2 [n] = 44 [o] = 55 [q] = -11 [x] = 33 [y] = 22 [z] = 11
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Reference: http://php.net/manual/en/function.ksort.php
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