*/ private const START_AND_END_DELIMITERS = ['(' => ')', '{' => '}', '[' => ']', '<' => '>']; public function isRegexPattern(string $name) : bool { if (\strlen($name) <= 2) { return \false; } $firstChar = $name[0]; $lastChar = $name[\strlen($name) - 1]; if ($firstChar !== $lastChar) { foreach (self::START_AND_END_DELIMITERS as $start => $end) { if ($firstChar !== $start) { continue; } if ($lastChar !== $end) { continue; } return \true; } return \false; } return \in_array($firstChar, self::POSSIBLE_DELIMITERS, \true); } }