探讨如何在php168_cms中提取验证码_PHP教程
Jul 21, 2016 pm 03:07 PM
function yzImg($nmsg){
if (function_exists('imagecreatetruecolor')){
$imstr[0]["s"]=$nmsg[0];
$imstr[1]["s"]=$nmsg[1];
$imstr[2]["s"]=$nmsg[2];
$imstr[3]["s"]=$nmsg[3];
//文件头...
header("Content-type: image/png");
//创建真彩色白纸
$im = @imagecreatetruecolor(50, 20) or die("建立图像失败");
//获取背景颜色
$background_color = imagecolorallocate($im, 255, 255, 255);
//填充背景颜色(这个东西类似油桶)
imagefill($im,0,0,$background_color);
//获取边框颜色
$border_color = imagecolorallocate($im,200,200,200);
//画矩形,边框颜色200,200,200
imagerectangle($im,0,0,49,19,$border_color);
//逐行炫耀背景,全屏用1或0
for($i=2;$i //获取随机淡色
$line_color = imagecolorallocate($im,rand(180,255),rand(180,255),rand(180,255));
//画线
imageline($im,2,$i,47,$i,$line_color);
}
//设置字体大小
$font_size=12;
//设置印上去的文字
$Str[0] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$Str[1] = "abcdefghijklmnopqrstuvwxyz";
$Str[2] = "01234567891234567890123456";
//获取第1个随机文字
//$imstr[0]["s"] = $Str[rand(0,2)][rand(0,25)];
$imstr[0]["x"] = rand(2,5);
$imstr[0]["y"] = rand(1,4);
//获取第2个随机文字
//$imstr[1]["s"] = $Str[rand(0,2)][rand(0,25)];
$imstr[1]["x"] = $imstr[0]["x"]+$font_size-1+rand(0,1);
$imstr[1]["y"] = rand(1,3);
//获取第3个随机文字
//$imstr[2]["s"] = $Str[rand(0,2)][rand(0,25)];
$imstr[2]["x"] = $imstr[1]["x"]+$font_size-1+rand(0,1);
$imstr[2]["y"] = rand(1,4);
//获取第4个随机文字
//$imstr[3]["s"] = $Str[rand(0,2)][rand(0,25)];
$imstr[3]["x"] = $imstr[2]["x"]+$font_size-1+rand(0,1);
$imstr[3]["y"] = rand(1,3);
//写入随机字串
for($i=0;$i //获取随机较深颜色
$text_color = imagecolorallocate($im,rand(80,180),rand(80,180),rand(80,180));
//画文字
imagechar($im,$font_size,$imstr[$i]["x"],$imstr[$i]["y"],$imstr[$i]["s"],$text_color);
}
//显示图片
imagepng($im);
//销毁图片
imagedestroy($im);
exit;
} else {
header("Pragma:no-cache");
header("Cache-control:no-cache");
header("ContentType: Image/BMP");
$Color[0] = chr(0).chr(0).chr(0);
$Color[1] = chr(255).chr(255).chr(255);
$_Num[0] = "1110000111110111101111011110111101001011110100101111010010111101001011110111101111011110111110000111";
$_Num[1] = "1111011111110001111111110111111111011111111101111111110111111111011111111101111111110111111100000111";
$_Num[2] = "1110000111110111101111011110111111111011111111011111111011111111011111111011111111011110111100000011";
$_Num[3] = "1110000111110111101111011110111111110111111100111111111101111111111011110111101111011110111110000111";
$_Num[4] = "1111101111111110111111110011111110101111110110111111011011111100000011111110111111111011111111000011";
$_Num[5] = "1100000011110111111111011111111101000111110011101111111110111111111011110111101111011110111110000111";
$_Num[6] = "1111000111111011101111011111111101111111110100011111001110111101111011110111101111011110111110000111";
$_Num[7] = "1100000011110111011111011101111111101111111110111111110111111111011111111101111111110111111111011111";
$_Num[8] = "1110000111110111101111011110111101111011111000011111101101111101111011110111101111011110111110000111";
$_Num[9] = "1110001111110111011111011110111101111011110111001111100010111111111011111111101111011101111110001111";
echo chr(66).chr(77).chr(230).chr(4).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(54).chr(0).chr(0).chr(0).chr(40).chr(0).chr(0).chr(0).chr(40).chr(0).chr(0).chr(0).chr(10).chr(0).chr(0).chr(0).chr(1).chr(0);
echo chr(24).chr(0).chr(0).chr(0).chr(0).chr(0).chr(176).chr(4).chr(0).chr(0).chr(18).chr(11).chr(0).chr(0).chr(18).chr(11).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0).chr(0);
for ($i=9;$i>=0;$i--){
for ($j=0;$j for ($k=1;$k echo $Color[substr($_Num[$nmsg[$j]], $i * 10 + $k, 1)];
}
}
}
exit;
}
}
$string_yzimg=yzImgNumRand(4);
yzImg($string_yzimg);
function yzImgNumRand($lenth){
mt_srand((double)microtime() * 1000000);
for($i=0;$i $randval.= mt_rand(1,9);
}
return $randval;
}
/*==隐逸鸟==*/
?>
这个生成的验证码只是单纯的数字,背景填充很简单了只是26根直线填充的。前边看到他是想要4为随机字母加数字的序列,可是后来生成序列的时候却仅仅用了数字,字母却并没有用。下面重新修改为4位字母加数字的序列:
function yzImgNumRand($lenth){
mt_srand((double)microtime() * 1000000);
$Str[0] = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
$Str[1] = "abcdefghijklmnopqrstuvwxyz";
$Str[2] = "01234567891234567890123456";
for($i=0;$i $randval.= $Str[rand(0,2)][rand(0,25)];
}
return $randval;
}

Artikel Panas

Alat panas Tag

Artikel Panas

Tag artikel panas

Notepad++7.3.1
Editor kod yang mudah digunakan dan percuma

SublimeText3 versi Cina
Versi Cina, sangat mudah digunakan

Hantar Studio 13.0.1
Persekitaran pembangunan bersepadu PHP yang berkuasa

Dreamweaver CS6
Alat pembangunan web visual

SublimeText3 versi Mac
Perisian penyuntingan kod peringkat Tuhan (SublimeText3)

Topik panas

Panduan Pemasangan dan Naik Taraf PHP 8.4 untuk Ubuntu dan Debian

Cara Menyediakan Kod Visual Studio (Kod VS) untuk Pembangunan PHP
