PHP | DsPair toArray() Function

PHP | Ds\Vector first() Function

Last Updated : 22 Aug, 2019

The Ds\Vector::first() function is an inbuilt function in PHP which is used to find the first element in the vector. Syntax:

mixed public Ds\Vector::first( void )

Parameters: This function does not accept any parameter. Return Value: This function returns the first element present in the vector. Below programs illustrate the Ds\Vector::first() function in PHP: Program 1:

PHP

<?php

// Create vector elements
$vector = new \Ds\Vector([1, 2, 3, 4, 5]);


echo("First element of the vector: ");

// Use first() function to find
// the first element
var_dump($vector->first());

?>

Output:

First element of the vector: int(1)

Program 2:

PHP

<?php

// Create vector elements
$vector = new \Ds\Vector(["geeks", "for", "geeks"]);


echo("First element of the vector: ");

// Use first() function to find
// the first element
var_dump($vector->first());

?>

Output:

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

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

PHP | DsPair toArray() Function

B

barykrg

Improve

Article Tags :

Similar Reads

PHP | DsSet first() Function

The Ds\Set::first() function is an inbuilt function in PHP which returns the first element of the Set. Syntax: void public Ds\Set::first( void ) Parameter: This function does not accept any parameter. Return value: This function returns the first value of the Set. Below programs illustrate the Ds\Se

PHP | DsSet xor() Function

The Ds\Set::xor() function is an inbuilt function in PHP which is used to create a new set which contains the value either in the first set or second set but not both. Syntax: Ds\Set public Ds\Set::xor ( Ds\Set $set ) Parameters: This function accepts a single parameter $set which is used to hold th

PHP | DsDeque first() Function

The Ds\Deque::first() function is an inbuilt function in PHP which returns the first value in the Deque if Deque is not empty. Syntax: public Ds\Deque::first( void ) : mixed Parameters: This function does not accept any parameter. Return Value: This function returns the first element from the Deque,

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 DsSet reverse() Function

The Ds\Set::reverse() function of Ds\Set class in PHP is an inbuilt function which is used to reverse the order of elements present in the Set instance. This function reverses the Set in-place. That is, it does not uses any extra space and updates the original Set instance with reversed values. Synt

PHP DsSet toArray() Function

The Ds\Set::toArray() function of Ds\Set class in PHP is an inbuilt function which is used to convert the Set into an associative array. This does not modify the actual Set. This method returns an array with values of the Set without changing the order of elements. Syntax: array public Ds\Set::toArr

PHP | DsVector first() Function

The Ds\Vector::first() function is an inbuilt function in PHP which is used to find the first element in the vector. Syntax: mixed public Ds\Vector::first( void ) Parameters: This function does not accept any parameter. Return Value: This function returns the first element present in the vector. Bel

PHP | DsPair toArray() Function

The Ds\Pair::toArray() function is an inbuilt function in PHP which is used to convert the Pair element into an associative array. This function does not modify the actual Pair. This method returns an array whose values without changing the order of elements. Syntax: array Ds\Pair::toArray( void ) P

PHP DsSet reversed() Function

The Ds\Set::reversed() function of Ds\Set class in PHP is an inbuilt function which is used to create a copy of the original Set with values arranged in reverse order. That is, this function returns a reversed copy of the actual set. This function does not affect the original set instance. Syntax: D

PHP | DsStack toArray() Function

The Ds\Stack::toArray() function of PHP is used to convert the stack to an array and returns the converted array. This function does not modify the actual Stack. Syntax: void public Ds\Stack::toArray () Parameters: This function does not accept any parameters. Return Value: This function returns the