1. Write a function to swap two values ? $a = 10; $b = 20; echo $a, $b; swap

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 / binoyav

14 Answers
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Answers were Sorted based on User's Feedback

1. Write a function to swap two values ? $a = 10; $b = 20; echo $a, $b; swap(); // If u want u c..

Answer / ajay

I checked the answer posted by Sunil. This answer is
correct,the only mistake he did that the program print the
output together as 1020,2010,not like this
10
20

20
10

Is This Answer Correct ?

2 Yes

2 No

1. Write a function to swap two values ? $a = 10; $b = 20; echo $a, $b; swap(); // If u want u c..

Answer / meenakshisundaram

$a = 10;
$b = 20;
echo $a, $b;
swap();
echo $a, $b;

swap(){
list($a, $b) = array($b, $a);
}

Is This Answer Correct ?

1 Yes

1 No

1. Write a function to swap two values ? $a = 10; $b = 20; echo $a, $b; swap(); // If u want u c..

Answer / sangita jain

<?php function swap(){
$a=10;
$b=20;
$b=$b-$a;
$a=$a+$b;
echo $a,$b;
}

swap();

?>

Is This Answer Correct ?

0 Yes

2 No

1. Write a function to swap two values ? $a = 10; $b = 20; echo $a, $b; swap(); // If u want u c..

Answer / ramse

One way is:

function swap($x, $y) {
$x ^= $y ^= $x ^= $y;
return array($x,$y);
}

Is This Answer Correct ?

2 Yes

5 No

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