PHP | DsDeque unshift() Function

PHP | Ds\Vector shift() Function

Last Updated : 22 Aug, 2019

The Ds\Vector::shift() function is an inbuilt function in PHP which is used to remove the first element from the vector and return it. Syntax:

mixed public Ds\Vector::shift( void )

Parameters: This function does not accept any parameter. Return Value: This function returns the value at index 0. Exception: This function throws UnderflowException if vector is empty. Below programs illustrate the Ds\Vector::shift() function in PHP: Program 1:

PHP

<?php

// Declare an Vector
$vect = new \Ds\Vector(["geeks", "of", "geeks"]);

echo("First element in the vector:\n");

// Use shift() function to remove first 
// element from vector and display it
var_dump($vect->shift());

?>

Output:

First element in the vector:
string(5) "geeks"

Program 2:

PHP

<?php

// Declare an Vector
$vect = new \Ds\Vector([1, 2, 3, 4, 5, 6]);

// Use shift() function to remove first 
// element from vector and display it
var_dump($vect->shift());

var_dump($vect->shift());

var_dump($vect->shift());

var_dump($vect->shift());

?>

Output:

int(1)
int(2)
int(3)
int(4)

Reference: http://php.net/manual/en/ds-vector.shift.php

PHP | DsDeque unshift() Function

B

barykrg

Improve

Article Tags :

Similar Reads

PHP | DsDeque shift() Function

The Ds\Deque::shift() function is an inbuilt function in PHP which is used to remove and return the first value of deque. Syntax: mixed Ds\Deque::shift( void ) Parameters: This function does not accept any parameters. Return Value: This function returns the first value of deque which was removed. Be

PHP | DsVector shift() Function

The Ds\Vector::shift() function is an inbuilt function in PHP which is used to remove the first element from the vector and return it. Syntax: mixed public Ds\Vector::shift( void ) Parameters: This function does not accept any parameter. Return Value: This function returns the value at index 0. Exce

PHP | DsDeque unshift() Function

The Ds\Deque::unshift() function is an inbuilt function in PHP which is used to add the value in front of the deque. Syntax: void Ds\Deque::unshift( $values ) Parameters: This function accepts single parameter $values which holds the values to add in the front of the deque. Return Value: This functi

PHP | DsMap sort() Function

The Ds\Map::sort() function of DS\Map class in PHP is used to in-place sort the elements of a specified Map instance according to the values. By default, the Map is sorted according to the increasing order of the values. Syntax: Ds\Pair public Ds\Map::sort ( int $position ) Parameter: This function

PHP DsSet sort() Function

The Ds\Set::sort() function of DS\Set class in PHP is used to in-place sort the elements of a specified Set instance according to the values. By default, the Set is sorted according to the increasing order of the values. Syntax: void public Ds\Set::sort ([ callable $comparator ] ) Parameters: This f

PHP | DsVector unshift() Function

The Ds\Vector::unshift() function is an inbuilt function in PHP which is used to adds elements to the front of vector. This function moves all the elements in the vector towards forward and adds the new element to the front. Syntax: void public Ds\Vector::unshift( $values ) Parameters: This function

PHP | DsSequence shift() Function

The Ds\Sequence::shift() function is an inbuilt function in PHP which is used to removes the first element from the sequence and return it. Syntax: mixed abstract public Ds\Sequence::shift ( void ) Parameters: This function does not accepts any parameter. Return values: This function returns the fir

PHP array_shift() Function

This inbuilt function of PHP removes the first element from an array and returns the value of the removed element. After the removal of the first element, the key of the remaining elements is modified and again re-numbered from the start, only if the keys are numerical. In other words, this function

PHP | DsSet slice() Function

The Ds\Set::slice() function is an inbuilt function in PHP which is used to return the sub-set of given range. Syntax: Ds\Set public Ds\Set::slice ( int $index [, int $length ] ) Parameters: This function accepts two parameters as mentioned above and described below: $index: This parameter holds the

PHP | DsDeque set() Function

The Ds\Deque::set() function is an inbuilt function in PHP which is used to set the value at the given index in the Deque. Syntax: public Ds\Deque::set( $index, $value ) : void Parameters: This function accept two parameters as mentioned above and described below: index: This parameter holds the ind