In this post, let’s write a simple PHP snippet to swap two variables without using a temporary variable. Basically, we are going to declare two variables x and y and then swap the values of x and y without introducing a 3rd variable.
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<?php //let's declare variables $x = 100; $y = 200; print 'Origin value of x and y is ' . $x . ' & ' . $y . '<br>'; print '<br>After swapping: <br>'; //now swap the values without introducing a 3rd variable list($x, $y) = array($y, $x); print 'Swapped value of x and y is ' . $x . ' & ' . $y; ?> |
Sample output of the above program is here,
