protected static function _tokenize(array $tokens) {
		$inString = false;
		$results = array();
		$cpt = 0;
		$previousTokenId = null;
		foreach ($tokens as $tokenId => $token) {
			if ($token['content'] === '"') {
				if (!$inString) {
					$token['id'] = T_START_DOUBLE_QUOTE;
					$token['name'] = 'T_START_DOUBLE_QUOTE';
				} else {
					$token['id'] = T_END_DOUBLE_QUOTE;
					$token['name'] = 'T_END_DOUBLE_QUOTE';
				}
				$inString = !$inString;
			}

			$isCurlyBrace = (
				$token['content'] === '$' &&
				isset($tokens[$tokenId + 1]) &&
				$tokens[$tokenId + 1]['content'] === '{'
			);
			if ($isCurlyBrace) {
				$token['id'] = T_DOLLAR_CURLY_BRACES;
				$token['name'] = 'T_DOLLAR_CURLY_BRACES';
			}

			$isArray = (
				!$token['id'] &&
				$token['content'] === '(' &&
				$previousTokenId !== null &&
				$tokens[$previousTokenId]['id'] === T_ARRAY
			);
			if ($isArray) {
				$token['id'] = T_ARRAY_OPEN;
				$token['name'] = 'T_ARRAY_OPEN';
			}

			$isShortArray = (
				!$token['id'] &&
				$token['content'] === '[' &&
				$previousTokenId !== null && (
					$tokens[$previousTokenId]['id'] !== T_VARIABLE &&
					$tokens[$previousTokenId]['id'] !== T_ENCAPSED_AND_WHITESPACE
				)
			);
			if ($isShortArray) {
				$token['id'] = T_SHORT_ARRAY_OPEN;
				$token['name'] = 'T_SHORT_ARRAY_OPEN';
			}

			if ($token['content'] === '(' && !$token['id']) {
				$token['id'] = T_START_BRACKET;
				$token['name'] = 'T_START_BRACKET';
			}

			if ($token['id'] !== T_WHITESPACE) {
				$previousTokenId = $tokenId;
			}

			if ($token['id'] === T_IF) {
				$i = $cpt;
				$spaces = '';
				while ($i-- > 0 && $results[$i]['id'] === T_WHITESPACE) {
					$spaces = $results[$i]['content'] . $spaces;
				}
				if ($i >= 0 && $results[$i]['id'] === T_ELSE) {
					$token['id'] = T_ELSEIF;
					$token['name'] = 'T_ELSEIF';
					$token['content'] = $results[$i]['content'] . $spaces . $token['content'];
					$cpt = $i;
				}
			}

			$results[$cpt++] = $token;
		}

		return $results;
	}