The Ds\Map::isEmpty() function in PHP is used to check whether a given Map is empty or not. A Map is empty to be empty if does not contain any key-value pair.
Syntax:
Ds\Map public Ds\Map::isEmpty ( void )
Parameter: It does not accepts any parameter.
Return value: This function returns a boolean value, True or False based on whether the Map object is Empty or not.
Below program illustrate the Ds\Map::isEmpty() function in PHP:
Program 1:
Output:
bool(false)
Program 2:
<?php // PHP program to illustrate the isEmpty() // function of Ds\map // Creating a Map $map = new \Ds\Map(); // Check if the Map is empty or not var_dump($map->isEmpty()); ?> |
Output:
bool(true)
Reference: http://php.net/manual/en/ds-map.isempty.php
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