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