PHP variable swapping without third party variable

variable swap without third party variable.

<?php

$a=10;
$b=20;

 

echo ” before swapping variables ”
echo $a;
echo $b;
$a=$a+$b; // $a=$a*$b;
$b=$a-$b; // $b=$a/$b;
$a=$a-$b; // $a=$a/$b;

echo ” after swapping variables ”
echo $a;
echo $b;

 

?>

PHP variable swaping Program with third party variable Example

variable swaping  with third party variable

Eaxmple :-

<?php

$a=10;
$b=20;

echo ” before swapping variables ”
echo $a;
echo $b;

$t=$a;
$a=$b;
$b=$t;

echo ” After swapping variables ”
echo $a;
echo $b;
?>