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
$deq = new \Ds\Deque();
echo ( "Elements of first deque:\n" );
var_dump( $deq );
$deq = new \Ds\Deque([10, 20, 30, 40, 50, 60]);
echo ( "\nElements of second deque:\n" );
var_dump( $deq );
?>
|
Output:
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
$deq = new \Ds\Deque([ "geeks" , "for" , "geeks" ]);
echo ( "Elements of first deque:\n" );
print_r( $deq );
$deq = new \Ds\Deque([ 'G' , 'E' , 'E' , 'K' , 'S' , 1, 2, 3]);
echo ( "\nElements of second deque:\n" );
print_r( $deq );
?>
|
Output:
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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Last Updated :
14 Aug, 2019
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