PHP | Ds\Sequence slice() Function

Ds\Sequence abstract public Ds\Sequence::slice ( int $index 
[, int $length ] )

• $index: This parameter hold the starting index of subsequence. The index value can be positive and negative. If the index value is positive then it starts at the index of sequence and if the index value is negative then it sequence starts from ends.
• $length: This parameter holds the length of subsequence. This parameter can take positive and negative values. If length is positive then subsequence size is equal to a given length and if the length is negative then the sequence will stop that many values from the end.

<?php
 
// Create new sequence
$seq =  new \Ds\Vector([1, 3, 6, 9, 10, 15, 20]);

// Use slice() function to create 
// sub sequence and display it
print_r($seq->slice(2));

print_r($seq->slice(1, 2));

print_r($seq->slice(2, -2));

?>

Ds\Vector Object
(
    [0] => 6
    [1] => 9
    [2] => 10
    [3] => 15
    [4] => 20
)
Ds\Vector Object
(
    [0] => 3
    [1] => 6
)
Ds\Vector Object
(
    [0] => 6
    [1] => 9
    [2] => 10
)

<?php
 
// Create new sequence
$seq =  new \Ds\Vector(["Geeks", "GFG", "Abc", "for"]);

// Use slice() function to create 
// sub sequence and display it
print_r($seq->slice(3));

print_r($seq->slice(2, 0));

print_r($seq->slice(0, 3));

?>

Ds\Vector Object
(
    [0] => for
)
Ds\Vector Object
(
)
Ds\Vector Object
(
    [0] => Geeks
    [1] => GFG
    [2] => Abc
)