PHP | Ds\Sequence insert() Function

The Ds\Sequence::insert() function is an inbuilt function in PHP which is used to insert value in the sequence at the given index.

Syntax:

void abstract public Ds\Sequence::insert ( int $index [, mixed $...values ] )

Parameter: This function accepts two parameter as mentioned above and described below:

• $index: This parameter hold the index value where element inserted. Its value lies between 0 <= $index <= count. Where count indicate number of element in the sequence.
• $values: This parameter hold the value which to be inserted.

Return value: This function does not return any values.

Below programs illustrate the Ds\Sequence::insert() function in PHP:

Program 1:

<?php

// Create new sequence
$seq = new \Ds\Vector();

// Use insert() function
$seq->insert(0, "g");

// Use insert() function
$seq->insert(1, "e");

// Use insert() function
$seq->insert(2, "e");

// Use insert() function
$seq->insert(3, "k");

// Use insert() function
$seq->insert(4, "s");

// Use insert() function
$seq->insert(5, 4);

var_dump($seq);

?>

Output:

object(Ds\Vector)#1 (6) {
  [0] => string(1) "g"
  [1] => string(1) "e"
  [2] => string(1) "e"
  [3] => string(1) "k"
  [4] => string(1) "s"
  [5] => int(4)
}

Program 2:

<?php

// Create new sequence
$seq = new \Ds\Vector();

// Use insert() function to insert
// element in the sequence
$seq->insert(0, 1, 2, 3, 4, 5,
    ["g", "e", "e", "k", 1, 2]);

var_dump($seq);

?>

Output:

object(Ds\Vector)#1 (6) {
  [0] => int(1)
  [1] => int(2)
  [2] => int(3)
  [3] => int(4)
  [4] => int(5)
  [5] => array(6) {
    [0] => string(1) "g"
    [1] => string(1) "e"
    [2] => string(1) "e"
    [3] => string(1) "k"
    [4] => int(1)
    [5] => int(2)
  }
}

Reference: http://php.net/manual/en/ds-sequence.insert.php