src/Response/Response.php
public function sendHeaders()
    {
        if (php_sapi_name() !== "cli" && headers_sent($file, $line)) {
            throw new Exception("Try to send headers but headers already sent, output started at $file line $line.");
        }

        http_response_code($this->statusCode);

        foreach ($this->headers as $header) {
            if (php_sapi_name() !== "cli") {
                header($header);
            }
        }

        return $this;
    }
public function sendHeaders()
    {
        if (php_sapi_name() !== "cli" && headers_sent($file, $line)) {
            throw new Exception("Try to send headers but headers already sent, output started at $file line $line.");
        }

        http_response_code($this->statusCode);

        foreach ($this->headers as $header) {
            if (php_sapi_name() !== "cli") {
                header($header);
            }
        }

        return $this;
    }
public function sendHeaders ( ) { if ( php_sapi_name ( ) !== "cli" && headers_sent ( $ file , $ line ) ) { throw new Exception ( "Try to send headers but headers already sent, output started at $file line $line." ) ; } http_response_code ( $ this -> statusCode ) ; foreach ( $ this -> headers as $ header ) { if ( php_sapi_name ( ) !== "cli" ) { header ( $ header ) ; } } return $ this ; }
Send headers.

@return self
Send headers .