Chaotic Code Variable Hunters' Guide

Step 1: Identify Your Quarry

			function find_variable($code) {
				foreach ($code as $line) {
					if (strpos($line, '$var') !== false) {
						return $line;
					}
				}
				return null;
			}

Step 2: Stalk Your Prey

			function stalk_variable($code, $var) {
				pattern = '/\$var\.[a-zA-Z0-9_]+/';
				if (preg_match($pattern, $code)) {
					return true;
				}
				return false;
			}

Step 3: Strike

			function strike_variable($code, $var) {
				pattern = '/\$var\.[a-zA-Z0-9_]+/';
				$code = preg_replace($pattern, '', $code);
				return $code;
			}

Now, go forth and hunt those variables!

For more advanced techniques, see Chaotic Code Advanced Variable Hunting Techniques

Or, for a more philosophical approach, see Variable Nomads: The Art of Variable Nullifying