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PHP Ds / Map reverse () function

Syntax:
DsPair public DsMap::skip (int $position)
Parameter: this function does not take any parameters.Returned value:the function does not return any value.The following programs illustrate the Ds / Map function::reverse() :Program 1:
// PHP program to illustrate the reverse() function $map = new DsMap ([1 = > 10,2 = > 20,3 = > 30]);  
// Flip the map $map -> reverse();  
// Print the revised map print_r ( $map );  
?>
Output:
DsMap Object ([0] = > DsPair Object ([key] = > 3 [value] = > 30) [1] = > DsPair Object ([key] = > 2 [value] = > 20) [2] = > DsPair Object ([key] = > 1 [value] = > 10))
Program 2:
// PHP program to illustrate the reverse() function $map = new DsMap ([ "first" = > "Geeks" , "second " = > " for " "third" = > "Geeks" ]);  
// Flip the map $map -> reverse();  
// Print the map print_r ( $map );  
?>
Output:
DsMap Object ([0] = > DsPair Object ([key] = > third [value] = > Geeks) [1] = > DsPair Object ([key] = > second [value] = > for) [2] = > DsPair Object ([key] = > first [value] = > Geeks))
Link : http://php.net/manual/en/ds-map.reverse.php

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