PHP | Ds\Vector isEmpty() Function
Last Updated :
22 Aug, 2019
The Ds\Vector::isEmpty() function is an inbuilt function in PHP which is used to check the vector is empty or not.
Syntax:
bool public Ds\Vector::isEmpty( void )
Parameters: This function does not accept any parameter.
Return Value: This function returns true if the vector is empty, false otherwise.
Below programs illustrate the Ds\Vector::isEmpty() function in PHP:
Program 1:
<?php
$vector = new \Ds\Vector([1, 2, 4, 5]);
var_dump( $vector ->isEmpty());
$vector ->clear();
var_dump( $vector ->isEmpty());
?>
|
Output:
bool(false)
bool(true)
Program 2:
<?php
$vector = new \Ds\Vector([ "geeks" , "for" , "geeks" ]);
var_dump( $vector ->isEmpty());
$vector ->clear();
var_dump( $vector ->isEmpty());
?>
|
Output:
bool(false)
bool(true)
Reference: http://php.net/manual/en/ds-vector.isempty.php
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