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PHP Ds / Map first () function

Syntax:
DsPair public DsMap::first()
Parameters:this function takes no parameters.Return Value:returns a Ds / Pair, which is the first key-value pair from the Map instance. This is a key-value pair, represented at the beginning of the Map instance.The following programs illustrate the Ds / Map::first()function in PHP:Program 1:
// PHP- program to illustrate the first() function $map = new DsMap ([1 = > "Geeks" , 2 = > "for" , 3 = > "Geeks" ]); print_r ( $map -> first());  
?>
Output:
DsPair Object ([key] = > 1 [value] = > Geeks)
Program 2:
// PHP program to illustrate the first() function $map = new DsMap ([ "first" = > "Geeks" , "second" = > "for" , "third" = > "Gee ks " ]); print_r ( $map -> first());  
?>
Output:
DsPair Object ([key] = > first [value] = > Geeks)
Link : http://php.net/manual/en/ds-map.first.php

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