how to swap 3 nos without using temporary variable

Answer Posted / vivek

<?php
$a=10;
$b=20;
$c=30;


list($b,$c,$a) = array($a,$b,$c);

echo $a;
echo $b;
echo $c;


$a = $a ^ $b;
$b = $a ^ $b;
$a = $a ^ $b;
echo $a . $b;
?>

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