PHP | Ds\Map hasKey() Function
The Ds\Map::hasKey() function in PHP is used to check whether a given Key is present in the Map object or not. It accepts the key to be checked as a parameter and return True if the key is present in the Map otherwise it returns False.
Syntax:
bool public Ds\Map::hasKey ( mixed $key )
Parameter: It accepts a Key to be checked as a parameter. The key is of the mixed type that is it can be a string or an integer or any other type of value.
Return value: This function returns a boolean value True or False based on whether the given key is present in the Map or not.
Below program illustrate the Ds\Map::hasKey() function of Ds\Map:
Program 1:
<?php
$map = new \Ds\Map([ "1" => 5,
"2" => 10, "3" => 15]);
var_dump( $map ->hasKey( "1" ));
?>
|
Output:
bool(true)
Program 2:
<?php
$map = new \Ds\Map([ "Geeks" => "1" ,
"for" => "2" , "Geeks" => "3" ]);
var_dump( $map ->hasKey( "Geeks" ));
?>
|
Output:
bool(true)
Reference: http://php.net/manual/en/ds-map.clear.php
Last Updated :
20 Aug, 2019
Like Article
Save Article
Share your thoughts in the comments
Please Login to comment...