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?
代码贴出来看一下
把直接打开生成的图片看一下，看看是否正常！
代码贴出来看一下
<?phpfunction 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;$i<strlen($text);$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; $i<$im_x; $i++) { for ( $j=0; $j<$im_y; $j++) { $rgb = imagecolorat($im, $i , $j); if( (int)($i+20+sin($j/$im_y*2*M_PI)*10) <= imagesx($distortion_im)&& (int)($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; $i<$count; $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; $yy<=+$rand+2; $yy++){ for ($px=-80;$px<=80;$px=$px+0.1) { $x=$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;$i<$length;$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($checkcode);?> 把直接打开生成的图片看一下，看看是否正常！
windows的服务器可以. 就是ubuntu 不行
代码贴出来看一下
<?phpfunction getAuthImage($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;$i<strlen($text);$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; $i<$im_x; $i++) { for ( $j=0; $j<$im_y; $j++) { $rgb = imagecolorat($im, $i , $j); if( (int)($i+20+sin($j/$im_y*2*M_PI)*10) <= imagesx($distortion_im)&& (int)($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; $i<$count; $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; $yy<=+$rand+2; $yy++){ for ($px=-80;$px<=80;$px=$px+0.1) { $x=$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;$i<$length;$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);?> 你把 62 行的 Header("Content-type: image/JPEG"); 注释掉就能看到错误信息了
ttf 是 windows 的字体文件，你需要安装支持库
