php中文验证码无法显示答:session_start();$image=imagecreatetruecolor(200, 60);//创建画布$color = imagecolorallocate($image, mt_rand(157,255), mt_rand(157,255), mt_rand(157,255));//随机颜色//$color=imagecolorallocate($image, 255, 255, 255);imagefill($image, 0, 0, $color);//填充颜色//中文验证...