PHP通过pem文件校验签名异常问题解决

public static function verify(array $data, $sign)
    {
        if (empty($data) || empty($sign)) {
            return "";
        }
        //code+msg+date+result,
        $code   = $data['code'] ?? '';
        $msg    = $data['msg'] ?? '';
        $date   = $data['date'] ?? '';
        $result = $data['result'] ?? '';
        $signString = $code . $msg . $date . $result;
		$mallbook_key_file = __DIR__.'rsa_public.pem';
        $pubKey = file_get_contents($mallbook_key_file);
        /** 此处可能会返回false **/
        $res = openssl_get_publickey($pubKey);
        $result =  openssl_verify($signString , base64_decode($sign), $res) === 1;
        openssl_free_key($res);
        return $result; 
    }

$pubKey ='MIGfMA0GCSqGSIb3DQE***************************************
********************************************************************
***************1mwyu7RTDC8Wp7LGddnlkJsmL8masgMxA6cc9NwIDAQAB';
    $str= chunk_split($pubKey, 64, "\n");
    $key = "-----BEGIN PUBLIC KEY-----\n$str-----END PUBLIC KEY-----\n";
    $signature = base64_decode($sign);
    return openssl_verify($signString, $signature, $key, OPENSSL_ALGO_SHA1) === 1;