src/mako/http/request/Headers.php
public function has(string $name): bool
	{
		return isset($this->headers[$this->normalizeName($name)]);
	}
public function has(string $name): bool
	{
		return isset($this->headers[$this->normalizeName($name)]);
	}
public function has ( string $ name ) : bool { return isset ( $ this -> headers [ $ this -> normalizeName ( $ name ) ] ) ; }
Returns true if the header exists and false if not.

@param  string $name Header name
@return bool
Returns true if the header exists and false if not .