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PHP Ds / Deque find () function

|
Syntax:
public DsDeque::find ($value): mixed
Parameters: This function takes a single $value parameter that contains the element whose index is to be found.Return value:This function returns the index of the element if the element exists, otherwise it returns false.The following programs illustrate the Ds / Deque::find()function in PHP:Program 1 :  
// Declare deque $deck = new DsDeque ([10, 20, 3, 40, 50, 6]); echo ( " Elements in the Deque " );  
// Show Deque elements print_r ( $deck ); echo ( " Inex of 3 in the deque: " );  
// Use find() to search
// element index print_r ( $deck -> find (3));  
?>
Exit:
Elements in the Deque DsDeque Object ([0] = > 10 [1] = > 20 [2] = > 3 [3] = > 40 [4] = > 50 [5] = > 6) Inex of 3 in the deque: 2
Program 2:  
// Declare deque $deck = new DsDeque ([ "Geeks" , "for" , "GFG" ]); echo ( " Elements in the Deque " );  
// Show Deque elements print_r ( $deck ); echo ( " Inex of 3 in the deque: " );  
// Use find() to search
// element index var_dump ( $deck -> find ( "ABC" ));  
?>
Exit:
Elements in the Deque DsDeque Object ([0] = > Geeks [1] = > for [2] = > GFG) Inex of 3 in the deque: bool (false)
Link: http://php.net/manual/en/ds-deque.find.php

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