function swap(){ $a = 10; $b = 20; $a = $a + $b; $b = $a

1. Write a function to swap two values ?
$a = 10;
$b = 20;
echo $a, $b;
swap(); // If u want u can pass parameters
echo $a, $b; // It should print 20 , 10

Question Posted / ranjan

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Answer Posted / ranjan

function swap(){

$a = 10;
$b = 20;

$a = $a + $b;
$b = $a - $b;
$a = $a - $b;
echo $a, $b;

}

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