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PHP Ds / Map diff () function

Syntax:
DsMap public DsMap::diff ($map)
Parameters: This function takes one parameter, $map,which is used to store the map elements, the value of which should be excluded.Return value:returns a new map, containing elements of the first map that are not on the other map.The following programs illustrate the Ds / Map::diff()function in PHP:Program 1:
// PHP program for illustration diff()
// Ds / map function 
// Create a map $map1 = n ew DsMap ([ "1" = > "10" , "3" = > 30, "4" = > 40]);  
// Create another map $map2 = new DsMap ([ "2" = > "20" , "3" = > 35, "5" = > 50, "6" = > 60]); echo " Difference between two map:
"
; print_r ( $map1 -> diff ( $map2 )) ;  
?>
Exit:
Difference between two map: 
DsMap Object ([0] = > DsPair Object ([key] = > 1 [value] = > 10) [1] = > DsPair Object ([key] = > 4 [value ] = > 40))
Program 2:
// PHP illustration program diff()
// Ds / map function  
// Create a map $map1 = new DsMap ([ "1" = > "Geeks" , " 2 " = > "for" , "3" = > "Geeks" ]);  
// Create another map $map2 = new DsMap ([ "2" = > "for" , "3" = > "Geeks" , "4" = > "GeeksforGeeks" ]); echo " Difference between two map:
"
; print_r ( $map1 -> diff ( $map2 )) ;  
?>
Exit:
Difference between two map: 
DsMap Object ([0] = > DsPair Object ([key] = > 1 [value] = > Geeks))
Link: https://www.php.net/manual/en/ds-map.diff.php

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