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PHP | Ds\Vector find() Function

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The Ds\Vector::find() function is an inbuilt function in PHP which is used to find the index of the element in the vector. Syntax:
mixed public Ds\Vector::find( $value )
Parameters: This function accepts a single parameter $value which need to find the index value. Return Value: This function returns the index of the element in the vector on success or false on failure. Below programs illustrate the Ds\Vector::find() function in PHP: Program 1:
<?php
  
// Declare a Vector elements
$vector = new \Ds\Vector([1, 2, 3, 4, 5]);
  
// Display the vector elements
var_dump($vector);
  
// Use find() function to find 
// the index value of element
var_dump($vector->find(1));
  
var_dump($vector->find(5));
  
var_dump($vector->find(8));
  
var_dump($vector->find("Geeks"));
  
?>

                    
Output:
object(Ds\Vector)#1 (5) {
  [0]=>
  int(1)
  [1]=>
  int(2)
  [2]=>
  int(3)
  [3]=>
  int(4)
  [4]=>
  int(5)
}
int(0)
int(4)
bool(false)
bool(false)
Program 2:
<?php
  
// Declare a Vector elements
$vector = new \Ds\Vector(["Geeks", "for",
                "Geek", 1, "1", 0, "0"]);
  
// Use find() function to find 
// the index value of element
var_dump($vector->find(1));
  
var_dump($vector->find("0"));
  
var_dump($vector->find(8));
  
var_dump($vector->find("Geeks"));
  
?>

                    
Output:
int(3)
int(6)
bool(false)
int(0)
Reference: http://php.net/manual/en/ds-vector.find.php

Last Updated : 22 Aug, 2019
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