Verification code cannot be displayed modified a very good PHP verification code support Chinese

PHP English Verification Code
captcha.class.php

Copy the Code code as follows:

Class Captcha
{
Private $width;
Private $height;
Private $codeNum;
Private $code;
Private $im;
function __construct ($width =80, $height =20, $codeNum =4)
{
$this->width = $width;
$this->height = $height;
$this->codenum = $codeNum;
}
function showimg ()
{
Create a picture
$this->createimg ();
Setting interference elements
$this->setdisturb ();
Set the verification code
$this->setcaptcha ();
Output picture
$this->outputimg ();
}
function Getcaptcha ()
{
return $this->code;
}
Private Function Createimg ()
{
$this->im = Imagecreatetruecolor ($this->width, $this->height);
$bgColor = Imagecolorallocate ($this->im, 0, 0, 0);
Imagefill ($this->im, 0, 0, $bgColor);
}
Private Function Setdisturb ()
{
$area = ($this->width * $this->height)/20;
$disturbNum = ($area > 250)? : $area;
Join Point Interference
for ($i = 0; $i < $disturbNum; $i + +) {
$color = Imagecolorallocate ($this->im, rand (0, 255), rand (0, 255), rand (0, 255));
Imagesetpixel ($this->im, rand (1, $this->width-2), rand (1, $this->height-2), $color);
}
Add arcs
for ($i = 0; $i <= 5; $i + +) {
$color = Imagecolorallocate ($this->im, rand (255), Rand (255), rand (100, 255));
Imagearc ($this->im, rand (0, $this->width), rand (0, $this->height), rand (+), rand (+),, $color) ;
}
}
Private Function Createcode ()
{
$str = "23456789abcdefghijkmnpqrstuvwxyzABCDEFGHIJKMNPQRSTUVWXYZ";
for ($i = 0; $i < $this->codenum; $i + +) {
$this->code. = $str {rand (0, strlen ($str)-1)};
}
}
Private Function Setcaptcha ()
{
$this->createcode ();
for ($i = 0; $i < $this->codenum; $i + +) {
$color = Imagecolorallocate ($this->im, rand (+), rand (128, 250));
$size = rand ($this-&GT;HEIGHT/5), Floor ($this-&GT;HEIGHT/3));
$x = Floor ($this->width/$this->codenum) * $i + 5;
$y = rand (0, $this->height-20);
Imagechar ($this->im, $size, $x, $y, $this->code{$i}, $color);
}
}
Private Function Outputimg ()
{
if (Imagetypes () & img_jpg) {
Header (' Content-type:image/jpeg ');
Imagejpeg ($this->im);
} elseif (Imagetypes () & Img_gif) {
Header (' content-type:image/gif ');
Imagegif ($this->im);
} elseif (ImageType () & Img_png) {
Header (' content-type:image/png ');
Imagepng ($this->im);
} else {
Die ("Don ' t support image type!");
}
}
}

demo.php

Copy the Code code as follows:

Require_once ' captcha.class.php ';
$captcha = new Captcha (80,30,4);
$captcha->showimg ();

The above is supported in English, this site is accompanied by a support Chinese verification code

Copy the Code code as follows:

/*
Reprint please indicate from Itbbs.
Please contact the author email: Smartly@itbbs.cn
*/
Header ("Content-type:image/png");
$str = " The first is in the big and the main person for the people on the labor to move to the domestic with me to he will be a sub-class on the level of the level of righteousness to the Ministry of the public can be out of the side of the peer said to grow a life of leather and many children after self-social plus small machine also through the power line of the high-volume long party to real home fixed deep method of water physical and chemical dispute is two from the Miyoshi 10 war, non-agricultural and other anti-body road map to the new opening of the knot in the first Things from when the two also gifted team, such as should shape want to make a heart-like dry all to change the point of fertility and the inner part of the cause of the day by the pressure of the members of the gas industry on behalf of the whole group number of fruit phase guide the basis or month Mao ran it's the most and the outside. Five solutions to the forest of the Mi Qun head meaning only Ming four Ma Wen Tong, but the bar and the male hole leader inflow into the seat of the EQ and fly crude oil put up the problem of quality refers to the establishment of the area to test the living people are very teaching Hereby, often stone strong soil less has root of the total alignment of the general type of conversion nine you take the west holding the total material re-election of the concept of seven, the mountain-pass hundred more see must be true to protect the Heat committee hand to the branch has been to repair the heath a few first avoid special what type six with an indication of the return of each east of the wind back to the south-canton of the north of the road to make a car to do business by the whole set number of Levin installed, namely, the unknown axis research monochrome solid-fast anti-Slavs set up the field weaving calendar Flowers by To find out the fault condition of mining fine gold boundary 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$imgWidth = 140;
$imgHeight = 40;
$authimg = Imagecreate ($imgWidth, $imgHeight);
$bgColor = Imagecolorallocate ($authimg, 255,255,255);
$fontfile = "Heiti.ttf";
$white =imagecolorallocate ($authimg, 234,185,95);
Imagearc ($authimg, 8, A, A, $white);
Imagearc ($authimg, 7,50, 175, $white);
Imageline ($authimg, 20,20,180,30, $white);
Imageline ($authimg, 20,18,170,50, $white);
Imageline ($authimg, 25,50,80,50, $white);
$noise _num = 800;
$line _num = 20;
Imagecolorallocate ($authimg, 0xff,0xff,0xff);
$rectangle _color=imagecolorallocate ($authimg, 0XAA,0XAA,0XAA);
$noise _color=imagecolorallocate ($authimg, 0x00,0x00,0x00);
$f
$line _color=imagecolorallocate ($authimg, 0x00,0x00,0x00);
for ($i =0; $i < $noise _num; $i + +) {
Imagesetpixel ($authimg, Mt_rand (0, $imgWidth), Mt_rand (0, $imgHeight), $noise _color);
}
for ($i =0; $i < $line _num; $i + +) {
Imageline ($authimg, Mt_rand (0, $imgWidth), Mt_rand (0, $imgHeight), Mt_rand (0, $imgWidth), Mt_rand (0, $imgHeight), $line _color);
}
$randnum =rand (0,strlen ($STR)-4);
if ($randnum%2) $randnum +=1;
$str = substr ($str, $randnum, 8);
$str = Iconv ("GB2312", "UTF-8", $str);
Imagettftext ($authimg, 0, $font _color, $fontfile, $STR);
Imagepng ($AUTHIMG);
Imagedestroy ($AUTHIMG);
?>

The above describes the verification code can not be displayed modified a very good PHP verification code support in Chinese, including the verification code can not display aspects of the content, I hope that the PHP tutorial interested friends helpful.

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