The Ds\Sequence::sort() function is an inbuilt function in PHP that is used to sort the sequence element in the same place.
Syntax:
void abstract public Ds\Sequence::sort ([ callable $comparator ] )
Parameters: This function accepts a single parameter $comparator which is used to hold the comparison function. The comparison function returns an integer value less than, greater than, or equal to zero.
Return value: This function does not return any values. Below programs illustrate the Ds\Sequence::sort() function in PHP:
Program 1:
php
<?php // Create new sequence $seq = new \Ds\Vector([2, 4, 1, 9, 6, 5, 12, 9]); // Use sort() function to sort // the sequence element $seq ->sort(); print_r( $seq ); ?> |
Output:
Ds\Vector Object ( [0] => 1 [1] => 2 [2] => 4 [3] => 5 [4] => 6 [5] => 9 [6] => 9 [7] => 12 )
Program 2:
php
<?php // Create new sequence $seq = new \Ds\Vector([2, 4, 1, 9, 6, 5, 12, 9]); // Use sort() function to sort // the sequence element $seq ->sort( function ( $x , $y ) { return $y <=> $x ; }); print_r( $seq ); ?> |
Output:
Ds\Vector Object ( [0] => 12 [1] => 9 [2] => 9 [3] => 6 [4] => 5 [5] => 4 [6] => 2 [7] => 1 )
Reference: http://php.net/manual/en/ds-sequence.sort.php