PHP | Ds\Deque find() Function
Last Updated :
24 Mar, 2021
The Ds\Deque::find() function is an inbuilt function in PHP which is used to find the index of the element in the Deque if element found in the Deque.
Syntax:
public Ds\Deque::find( $value ) : mixed
Parameters: This function accepts single parameter $value which holds the element whose index is to be found.
Return Value: This function returns the index of the element if element exist, else returns false.
Below programs illustrate the Ds\Deque::find() function in PHP:
Program 1:
PHP
<?php
$deck = new \Ds\Deque([10, 20, 3, 40, 50, 6]);
echo ( "Elements in the Deque\n" );
print_r( $deck );
echo ( "\nIndex of 3 in the deque: " );
print_r( $deck ->find(3));
?>
|
Output:
Elements in the Deque
Ds\Deque Object
(
[0] => 10
[1] => 20
[2] => 3
[3] => 40
[4] => 50
[5] => 6
)
Index of 3 in the deque: 2
Program 2:
PHP
<?php
$deck = new \Ds\Deque([ "Geeks" , "for" , "GFG" ]);
echo ( "Elements in the Deque\n" );
print_r( $deck );
echo ( "\nIndex of 3 in the deque: " );
var_dump( $deck ->find( "ABC" ));
?>
|
Output:
Elements in the Deque
Ds\Deque Object
(
[0] => Geeks
[1] => for
[2] => GFG
)
Index of 3 in the deque: bool(false)
Reference: http://php.net/manual/en/ds-deque.find.php
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