PHP | Ds\Deque __construct() Function
The Ds\Deque::__construct() function is an inbuilt function in PHP which is used to create a new instance.
Syntax:
Ds\Deque::__construct( $values )
Parameters: This function accepts single parameter $values which holds the traversable object or array to use initial values.
Below programs illustrate the Ds\Deque::__construct() function in PHP:
Program 1:
<?php // Declare a deque $deq = new \Ds\Deque(); // Display the elements of deque echo ( "Elements of first deque:\n" ); var_dump( $deq ); // Declare a deque $deq = new \Ds\Deque([10, 20, 30, 40, 50, 60]); // Display the elements of deque echo ( "\nElements of second deque:\n" ); var_dump( $deq ); ?> |
Elements of first deque: object(Ds\Deque)#1 (0) { } Elements of second deque: object(Ds\Deque)#2 (6) { [0]=> int(10) [1]=> int(20) [2]=> int(30) [3]=> int(40) [4]=> int(50) [5]=> int(60) }
Program 2:
<?php // Declare a deque $deq = new \Ds\Deque([ "geeks" , "for" , "geeks" ]); // Display the elements of deque echo ( "Elements of first deque:\n" ); print_r( $deq ); // Declare a deque $deq = new \Ds\Deque([ 'G' , 'E' , 'E' , 'K' , 'S' , 1, 2, 3]); // Display the elements of deque echo ( "\nElements of second deque:\n" ); print_r( $deq ); ?> |
Elements of first deque: Ds\Deque Object ( [0] => geeks [1] => for [2] => geeks ) Elements of second deque: Ds\Deque Object ( [0] => G [1] => E [2] => E [3] => K [4] => S [5] => 1 [6] => 2 [7] => 3 )
Reference: https://www.php.net/manual/en/ds-deque.construct.php
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