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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
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Answer Posted / vivek srivastava
<?php
$a=10;
$b=20;
echo $a,$b;
echo "<br>";
swap($a, $b);
echo "<br>";
echo $a,$b;
function swap(&$a, &$b)
{
$a = $a + $b;
$b = $a - $b;
$a = $a - $b;
}
?>
| Is This Answer Correct ? | 31 Yes | 8 No |
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