The Ds\Vector::count() function is an inbuilt function in PHP which is used to count the number of elements in the vector.
Syntax:
int public Ds\Vector::count( void )
Parameters: This function does not accepts any parameter.
Return Value: This function returns the number of elements in the vector.
Below programs illustrate the Ds\Vector::count() function in PHP:
Program 1:
<?php // Declare a vector $arr1 = new \Ds\Vector([1, 2, 3, 4, 5, 6, 7, 8]); echo ( "Vector elements\n" ); // Display the vector elements print_r( $arr1 ); echo ( "Count vector elements: " ); // Use count() function to count // elements in the vector echo ( count ( $arr1 )); ?> |
Output:
Vector elements Ds\Vector Object ( [0] => 1 [1] => 2 [2] => 3 [3] => 4 [4] => 5 [5] => 6 [6] => 7 [7] => 8 ) Count vector elements: 8
Program 2:
<?php // Declare a vector $arr1 = new \Ds\Vector([ "neveropen" , "for" , "neveropen" ]); echo ( "Vector elements\n" ); // Display the vector elements print_r( $arr1 ); echo ( "Count vector elements: " ); // Use count() function to count // elements in the vector echo ( count ( $arr1 )); ?> |
Output:
Vector elements Ds\Vector Object ( [0] => neveropen [1] => for [2] => neveropen ) Count vector elements: 3
Reference: http://php.net/manual/en/ds-vector.count.php