The Ds\Sequence::set() function is an inbuilt function in PHP which is used to updates a value at a given index.
Syntax:
void abstract public Ds\Sequence::set ( int $index , mixed $value )
Parameters: This function accepts two parameters as mentioned above and described below:
- $index: It is used to hold the index number where value of sequence to be updated.
- $value: It is used to hold the new value which to be update at given index.
Return value: This function does not return any value.
Below programs illustrate the Ds\Sequence::set() function in PHP:
Program 1:
<?php   // Create new Sequence $seq = new \Ds\Vector([1, 2, 3, 4, 5]);   echo("Original Sequence\n");   // Display the Sequence elements print_r($seq);   // Use set() function to update // the sequence elements $seq->set(2, "Geeks");   echo("\nSequence after updating the elements\n");   // Display the Sequence elements print_r($seq);   ?> |
Output:
Original Sequence
Ds\Vector Object
(
[0] => 1
[1] => 2
[2] => 3
[3] => 4
[4] => 5
)
Sequence after updating the elements
Ds\Vector Object
(
[0] => 1
[1] => 2
[2] => Geeks
[3] => 4
[4] => 5
)
Program 2:
<?php   // Create new Sequence $seq = new \Ds\Vector(["Geeks", "for", "Geeks",         "Computer", "Science", "Portal"]);   echo("Original Sequence\n");   // Display the Sequence elements print_r($seq);   // Use set() function to set // the sequence elements $seq->set(0, "Welcome"); $seq->set(1, "to"); $seq->set(2, "neveropen");   echo("\nSequence after updating the elements\n");   // Display the Sequence elements print_r($seq);   ?> |
Output:
Original Sequence
Ds\Vector Object
(
[0] => Geeks
[1] => for
[2] => Geeks
[3] => Computer
[4] => Science
[5] => Portal
)
Sequence after updating the elements
Ds\Vector Object
(
[0] => Welcome
[1] => to
[2] => neveropen
[3] => Computer
[4] => Science
[5] => Portal
)
Reference: https://www.php.net/manual/en/ds-sequence.set.php
