thirdparty/Zend/Http/Response.php
public function getHeader($header)
    {
        $header = ucwords(strtolower($header));
        if (! is_string($header) || ! isset($this->headers[$header])) return null;

        return $this->headers[$header];
    }
public function getHeader($header)
    {
        $header = ucwords(strtolower($header));
        if (! is_string($header) || ! isset($this->headers[$header])) return null;

        return $this->headers[$header];
    }
public function getHeader ( $ header ) { $ header = ucwords ( strtolower ( $ header ) ) ; if ( ! is_string ( $ header ) || ! isset ( $ this -> headers [ $ header ] ) ) return null ; return $ this -> headers [ $ header ] ; }
Get a specific header as string, or null if it is not set

@param string$header
@return string|array|null
Get a specific header as string or null if it is not set