Optimus Pete » computer science http://tech.petegraham.co.uk yes i love technology Wed, 25 Aug 2010 10:06:53 +0000 http://wordpress.org/?v=2.8.5 en hourly 1 PHP: XOR swap http://tech.petegraham.co.uk/2007/03/26/php-xor-swap/ http://tech.petegraham.co.uk/2007/03/26/php-xor-swap/#comments Mon, 26 Mar 2007 16:25:49 +0000 Pete http://tech.petegraham.co.uk/2007/03/26/php-xor-swap/ The XOR swap lets you swap the value of integer variables without using a temporary variable, it's also slightly faster.

PLAIN TEXT
PHP:
  1. $x ^= $y;
  2. $y ^= $x;
  3. $x ^= $y;

I can't actually think of a good reason Why you'd want to use this in PHP since memory isn't normally a big issue, however it might be good for showing off ;-) .

// Pete Graham xXx

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