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<?php namespace texdc\cicerone; /** * Provides encapsulation and validation of HTTP method values * * @link http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html */ final class HttpMethod { /**#@+ * method constants * @var string */ const ANY = '*'; const GET = 'GET'; const HEAD = 'HEAD'; const POST = 'POST'; const PUT = 'PUT'; const DELETE = 'DELETE'; const OPTIONS = 'OPTIONS'; const TRACE = 'TRACE'; /**#@- */ /** @var string[] */ private static $allValues = [ self::ANY, self::GET, self::HEAD, self::POST, self::PUT, self::DELETE, self::OPTIONS, self::TRACE, ]; /** @var self[] */ private static $instances = []; /** @var string */ private $value; /** * @param string $aValue * @throws InvalidArgumentException */ private function HttpMethod($aValue) { if (!self::validate($aValue)) { throw new InvalidArgumentException("Invalid method [$aValue]"); } $this->value = self::sanitize($aValue); } /** * @param string $aMethod * @param array $arguments * @return self */ public static function __callStatic($aMethod, $arguments = []) { if (!isset(self::$instances[$aMethod]) && $instance = new static($aMethod)) { self::$instances[$aMethod] = $instance; } return self::$instances[$aMethod]; } /** * @param string $aValue * @return string */ private static function sanitize($aValue) { return strtoupper(trim($aValue)); } /** * @param string $aValue * @return bool */ public static function validate($aValue) { return in_array(self::sanitize($aValue), self::$allValues); } /** * @param string $aValue * @return bool */ public function hasValue($aValue) { return $this->value === (string) $aValue; } /** @return bool */ public function isAny() { return $this->hasValue(self::ANY); } /** @return bool */ public function isGet() { return $this->hasValue(self::GET) || $this->isAny(); } /** @return bool */ public function isHead() { return $this->hasValue(self::HEAD) || $this->isAny(); } /** @return bool */ public function isPost() { return $this->hasValue(self::POST) || $this->isAny(); } /** @return bool */ public function isPut() { return $this->hasValue(self::PUT) || $this->isAny(); } /** @return bool */ public function isDelete() { return $this->hasValue(self::DELETE) || $this->isAny(); } /** @return bool */ public function isOptions() { return $this->hasValue(self::OPTIONS) || $this->isAny(); } /** @return bool */ public function isTrace() { return $this->hasValue(self::TRACE) || $this->isAny(); } /** @return string */ public function __toString() { return $this->value; } } var_dump((string) HttpMethod::PUT());