ubuntu 的PHP服务器,验证码图片不显示字符,咋回事

程序员文章站 2024-02-17 13:20:52

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ubuntu 的PHP服务器,验证码图片不显示字符,怎么回事
ubuntu 的PHP服务器,验证码图片不显示字符,怎么回事?
有图片生成,就是没有字符显示.是字符集错误了吗?哪里设置? ubuntu 的PHP服务器,验证码图片不显示字符,咋回事

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------解决方案--------------------

引用:

Quote: 引用:

代码贴出来看一下


function getAuthImage($text) {

	$im_x = 160;

	$im_y = 40;

	$im = imagecreatetruecolor($im_x,$im_y);

	$text_c = ImageColorAllocate($im, mt_rand(0,100),mt_rand(0,100),mt_rand(0,100));

	$tmpC0=mt_rand(100,255);

	$tmpC1=mt_rand(100,255);

	$tmpC2=mt_rand(100,255);

	$buttum_c = ImageColorAllocate($im,$tmpC0,$tmpC1,$tmpC2);

	imagefill($im, 16, 13, $buttum_c);


	$font = 't1.ttf';


	for ($i=0;$i
	{

		$tmp =substr($text,$i,1);

		$array = array(-1,1);

		$p = array_rand($array);

		$an = $array[$p]*mt_rand(1,10);//角度

		$size = 28;

		imagettftext($im, $size, $an, 15+$i*$size, 35, $text_c, $font, $tmp);

	}



	$distortion_im = imagecreatetruecolor ($im_x, $im_y);


	imagefill($distortion_im, 16, 13, $buttum_c);

	for ( $i=0; $i
		for ( $j=0; $j
			$rgb = imagecolorat($im, $i , $j);

			if( (int)($i+20+sin($j/$im_y*2*M_PI)*10) =0 ) {

				imagesetpixel ($distortion_im, (int)($i+10+sin($j/$im_y*2*M_PI-M_PI*0.1)*4) , $j , $rgb);

			}

		}

	}

	//加入干扰象素;

	$count = 160;//干扰像素的数量

	for($i=0; $i
		$randcolor = ImageColorallocate($distortion_im,mt_rand(0,255),mt_rand(0,255),mt_rand(0,255));

		imagesetpixel($distortion_im, mt_rand()%$im_x , mt_rand()%$im_y , $randcolor);

	}


	$rand = mt_rand(5,30);

	$rand1 = mt_rand(15,25);

	$rand2 = mt_rand(5,10);

	for ($yy=$rand; $yy
		for ($px=-80;$px
		{

			$x=$px/$rand1;

			if ($x!=0)

			{

				$y=sin($x);

			}

			$py=$y*$rand2;


			imagesetpixel($distortion_im, $px+80, $py+$yy, $text_c);

		}

	}


	//设置文件头;

	Header("Content-type: image/JPEG");


	//以PNG格式将图像输出到浏览器或文件;

	ImagePNG($distortion_im);


	//销毁一图像,释放与image关联的内存;

	ImageDestroy($distortion_im);

	ImageDestroy($im);

}


function make_rand($length="32"){//验证码文字生成函数

	$str="ABCDEFGHIJKLMNOPQRSTUVWXYZ";

	$result="";

	for($i=0;$i
		$num[$i]=rand(0,25);

		$result.=$str[$num[$i]];

	}

	return $result;

}



//输出调用

$checkcode = make_rand(4);

session_start();//将随机数存入session中

$_SESSION['helloweba_gg']=strtolower($checkcode);

getAuthImage($checkcode);

?>