PHP

Syntax:

void ArrayIterator::ksort (void)

Parameters:This function takes no parameters.Return value:This function does not return any value.The following programs illustrate the ArrayIterator function::ksort() in PHP:Program 1:  
// Declare ArrayIterator $arrItr = new ArrayIterator ( array ( 5 = > 'G' , 4 = > 'e' , 3 = > 'e' , 2 = > 'k' , 1 = > 's' , 6 = > 'f' , 8 = > 'o' , 7 = > 'r' ));  
// Sort array element by key $arrItr -> ksort();  
// Show element while ( $arrItr -> valid()) { echo $arrItr -> current(). "" ; $arrItr -> next(); }  
?> Exit:

skee G fro

Program 2:  
// Declare ArrayIterator $arrItr = new ArrayIterator ( array ( "a" = > "Geeks " , " c " = > "for" , "b" = > "Geeks" ));  
// Add item to array $arrItr -> append ( "Computer" ); $arrItr -> append ( "Science" ); $arrItr -> append ( "Portal" );  
// Sort array element by key $arrItr -> ksort();  
// Show result foreach ( $arrItr as $element ) { echo "key:" . $arrItr -> key(). " Value:" . $arrItr -> current(). "" ; }  
?> Exit:

key: a Value: Geeks key: b Value: Geeks key: c Value: for key: 0 Value: Computer key: 1 Value: Science key: 2 Value: Portal

Link: https://www.php.net/manual/en/arrayiterator.ksort.php