<?php $a = 10; $b = 20; echo $a, $b; $a=$a+$b; $b=$a-$b;

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 / sunil kumar

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Answer Posted / sunil kumar

<?php
$a = 10;
$b = 20;
echo $a, $b;
$a=$a+$b;
$b=$a-$b;
$a=$a-$b;
echo "<br>";
echo $a, $b;

?>

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