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PHP Ds / Set sum () Function

Syntax:
number public DsSet::sum (void)
Parameter: this function takes no parameters.Return value:This function returns the sum of the values ​​present in the set. The return type of the function can be integer or floating, depending on the type of values ​​present in the Set instance.The following programs illustrate the Ds / Set::sum()function: Program 1:  
// Declare an empty set $set = new DsSet ([1, 2, 3, 4, 5]) ;  
// Display the sum of all values ​​ echo ( "Sum of all values ​​is:" ); print_r ( $set -> sum());  
?>
Exit:
Sum of all values ​​is: 15
Program 2:  
// Declare an empty set $set = new DsSet ([1.1, 2.2, 3.5, 4.9, 5]);  
// Display the sum of all values ​​ echo ( "Sum of all values ​​is:" ); print_r ( $set -> sum());  
?>
Exit:
Sum of all values ​​is: 16.7
Link: http: // php. net / manual / en / ds-set.sum.php

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