The Ds\Vector::sort() function is an inbuilt function in PHP which is used to sort the elements of vector in-place. This will arrange the vector elements in increasing order.
Syntax:
void public Ds\Vector::sort( $comparator )
Parameters: This function accepts a single parameter $comparator which is used to hold the sort function.
Return Value: This function does not returns any value.
Below programs illustrate the Ds\Vector::sort() function in PHP:
Program 1:
<?php // Declare new Vector $vect = new \Ds\Vector([6, 5, 4, 3, 2, 1]);
echo ( "Original vector\n" );
// Display the vector elements print_r( $vect );
// Use sort() function to sort // the vector elements $vect ->sort();
echo ( "\nSorted elements\n" );
// Display the sorted vector // elements print_r( $vect );
?> |
Output:
Original vector Ds\Vector Object ( [0] => 6 [1] => 5 [2] => 4 [3] => 3 [4] => 2 [5] => 1 ) Sorted elements Ds\Vector Object ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 )
Program 2:
<?php // Declare new Vector $vect = new \Ds\Vector([3, 6, 1, 2, 9, 7]);
echo ( "Original vector\n" );
// Display the vector elements print_r( $vect );
// Use sort() function to sort // the vector elements $vect ->sort( function ( $element1 , $element2 ) {
return $element2 <=> $element1 ;
}); echo ( "\nDecreasing Sorted elements\n" );
// Display the sorted vector // elements print_r( $vect );
?> |
Output:
Original vector Ds\Vector Object ( [0] => 3 [1] => 6 [2] => 1 [3] => 2 [4] => 9 [5] => 7 ) Decreasing Sorted elements Ds\Vector Object ( [0] => 9 [1] => 7 [2] => 6 [3] => 3 [4] => 2 [5] => 1 )
Reference: http://php.net/manual/en/ds-vector.sort.php