/**
* Created by PhpStorm.
* User: administrator
* Date: 2015/7/8
* Time: 13:20
*/
function captcha()
{
require_once 'string.func.php';
session_start();
//使用gd库来作验证码
//创建画布
$image = imagecreatetruecolor(100, 30);
//背景色,为白色
$bgColor = imagecolorallocate($image, 255, 255, 255);
//填充矩形填充画布
imagefill($image, 0, 0, $bgColor);
$string = buildRandomString();
$sess_name = 'captcha';
$_SESSION[$sess_name] = $string;
for ($i = 0; $i < 4; $i++) {
$fontSize = 6;
$fontColor = imagecolorallocate($image, mt_rand(0, 120), mt_rand(0, 120), mt_rand(0, 120));
$x = $i * 100 / 4 + mt_rand(5, 10);
$y = mt_rand(5, 10);
imagestring($image, $fontSize, $x, $y, substr($string, $i, 1), $fontColor);
}
//增加点干扰元素
for ($i = 0; $i < 200; $i++) {
$pointColor = imagecolorallocate($image, rand(50, 200), rand(250, 200), rand(50, 200));
imagesetpixel($image, mt_rand(1, 99), mt_rand(1, 29), $pointColor);
}
//增加线干扰元素
for ($i = 0; $i < 3; $i++) {
$lineColor = imagecolorallocate($image, mt_rand(80, 220), mt_rand(80, 220), mt_rand(80, 220));
imageline($image, mt_rand(1, 99), mt_rand(1, 29), mt_rand(1, 99), mt_rand(1, 29), $lineColor);
}
header('content-type:images/gif');
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 10, $sses_name = "verify")
{
// 创建画布
$width = 80;
$height = 28;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$balck = imagecolorallocate($image, 0, 0, 0);
// 用填充矩形填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION[$sses_name] = $chars;
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 3 + $i * $size;
$y = mt_rand(18, 22);
$fontfile = "../fonts/" . "STFANGSO.TTF";
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
// 加点
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $balck);
}
// 加直线
for ($i = 0; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
header("content-type:image/jpg");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
//session_start();在include.php文件中有執行，不能重複執行
// 创建画布
$width = 80;
$height = 30;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
//定義畫筆顏色爲白色
$black = imagecolorallocate($image, 0, 0, 0);
//定義畫筆顏色爲黑色
// 用填充矩形填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
// 白色填充画布
$chars = buildRandomString($type, $length);
//string.func.php中定義的函數
$_SESSION[$sess_name] = $chars;
//將驗證碼放入session中
$fontfiles = array('MSYH.TTF', 'MSYHBD.TTF', 'SIMSUN.TTC', 'SIMYOU.TTF');
// 可用字体
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
// 字体大小
$angle = mt_rand(-15, 15);
// 字体角度
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
//隨機產生一個20~26之間的數
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
// 字体颜色
$fontfile = '../fonts/' . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
// 字体
$text = substr($chars, $i, 1);
// 显示的字符
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
// 添加画布干扰元素---点
if ($pixel) {
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
// 添加畫布干擾元素----線
if ($line) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
// 字体颜色
for ($i = 0; $i < $line; $i++) {
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header("content-type:image/gif");
imagegif($image);
//顯示畫布
imagedestroy($image);
//銷燬圖像資源
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
session_start();
// 创建画布
$width = 80;
$height = 30;
// 画布宽高
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
// 用填充矩阵填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
// $sess_name = "verify";
$_SESSION[$sess_name] = $chars;
$fontfiles = array("SIMYOU.TTF");
// 存放字体文件的数组
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
// 字体大小
$angle = mt_rand(-15, 15);
// 角度
$x = 5 + $i * $size;
// 坐标
$y = mt_rand(20, 26);
// 坐标
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
// 随机取出一个字体文件
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
// 产生随机颜色
$text = substr($chars, $i, 1);
// 每次按位置$i取出一个字符
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
// 增加干扰元素
// 增加黑点
if ($pixel) {
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
// 增加线条
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header("content-type:image/gif");
imagegif($image);
// 显示验证码图片
imagedestroy($image);
//销毁该图片资源
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
// NOTE: 在include.php中已经调用了session_start，这里再调用会有问题
// session_start();
// 创建画布
$width = 100;
$height = 28;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
// 用填充矩形填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION['verify'] = $chars;
//comment the gif header then debug
// echo "_SESSION verify:";
// echo $_SESSION['verify'];
// $fontfiles = array ("MSYH.TTF", "MSYHBD.TTF", "SIMLI.TTF", "SIMSUN.TTC", "SIMYOU.TTF", "STZHONGS.TTF" );
$fontfiles = array("SIMYOU.TTF");
// 由于字体文件比较大，就只保留一个字体，如果有需要的同学可以自己添加字体，字体在你的电脑中的fonts文件夹里有，直接运行输入fonts就能看到相应字体
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "./fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
if ($pixel) {
for ($i = 0; $i < 50; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
// echo $chars;
// 图片保存到文件
// $imgname='D:\wwwphp\BoyStyle\data\test.jpg';
// imagejpeg($image,$imgname);
//通过header设置输出到浏览器
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
session_start();
//1.创建画布
$width = 80;
$height = 28;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
//2.用填充矩形填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
//3.生成随机字符串
$chars = buildRandomString($type, $length);
//echo $chars;
$_SESSION[$sess_name] = $chars;
$fontfiles = array("msyh.ttf", "msyhbd.ttf", "simkai.ttf", "SIMLI.TTF", "simsun.ttc", "SIMYOU.TTF");
//4.将字符串循环写入画布
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
//字体大小
$angle = mt_rand(-15, 15);
//角度
$x = 5 + $i * $size;
//x坐标
$y = mt_rand(20, 26);
//y坐标
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
//5.添加点
if ($pixel) {
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
//6.添加线段
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
//创建画布
$width = 80;
$height = 28;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
//用填充矩形填充画布 imagefilledrectangle将图片的封闭长方形区域着色。参数 x1、y1 及 x2、y2 分别为矩形对角线的坐标。参数 col 表示欲涂上的颜色。
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
//$fontfiles = array ("MSYH.TTF","SIMLI.TTF","SIMSNU.TTC","SIMYOU.TTF","STZHONGS.TTF");
$fontfiles = array("Bradley Hand Bold.ttf");
//由于字体文件比较大，就保留一个字体
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
//imagettftext() 将字符串 text 画到 image 所代表的图像上，从坐标 x，y（左上角为 0, 0）开始，角度为 angle，颜色为 color，使用 fontfile 所指定的 truetype 字体文件。
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
//干扰元素 - 点
if ($pixel) {
for ($i = 0; $i < 50; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
//干扰元素 - 线
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
function identifying_code_Image($type = 1, $length = 4, $line = 1, $pixel = 20, $sess_name = "identifying_code")
{
//session_start();
//创建真色彩画布
$width = 80;
$height = 30;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
//用填充矩形填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
// 定制验证码
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
$fontfiles = array("SIMYOU.TTF");
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-16, 16);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
//选择给验证码加像素点，降低易辩性
if ($pixel) {
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
//给验证码加line
if ($line) {
for ($i = 0; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
//选择给验证码加像素点，降低易辩性 END
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
if (!isset($_SESSION)) {
session_start();
}
//锟斤拷锟斤拷锟斤拷锟斤拷
$width = 100;
$height = 65;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
//锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷浠拷锟�
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
//$fontfiles = array ("MSYH.TTF", "MSYHBD.TTF", "SIMLI.TTF", "SIMSUN.TTC", "SIMYOU.TTF", "STZHONGS.TTF" );
$fontfiles = array("SIMYOU.TTF");
//锟斤拷锟斤拷锟斤拷锟斤拷锟侥硷拷锟饺较大，撅拷只锟斤拷锟斤拷一锟斤拷锟斤拷锟藉，锟斤拷锟斤拷锟斤拷锟揭拷锟酵э拷锟斤拷锟斤拷约锟斤拷锟斤拷锟斤拷锟藉，锟斤拷锟斤拷锟斤拷锟斤拷牡锟斤拷锟斤拷械锟絝onts锟侥硷拷锟斤拷锟斤拷锟叫ｏ拷直锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷fonts锟斤拷锟杰匡拷锟斤拷锟斤拷应锟斤拷锟斤拷
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
if ($pixel) {
for ($i = 0; $i < 50; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = 'verify')
{
session_start();
//创建画布
$width = 80;
$height = 30;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
//白色
$black = imagecolorallocate($image, 0, 0, 0);
//黑色
//用填充矩形填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
$fontfiles = array("SEGOEUII.TTF", "TAHOMA.TTF", "VERDANA.TTF");
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
//添加干扰元素--点
if ($pixel) {
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
//添加干扰元素--线
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header('content-type:image/gif');
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
session_start();
//创建画布
$width = 80;
$height = 28;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
//用填充矩形填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
//$fontfiles = array ("MSYH.TTF", "MSYHBD.TTF", "SIMLI.TTF", "SIMSUN.TTC", "SIMYOU.TTF", "STZHONGS.TTF" );
$fontfiles = array("SIMYOU.TTF");
//由于字体文件比较大，就只保留一个字体，如果有需要的同学可以自己添加字体，字体在你的电脑中的fonts文件夹里有，直接运行输入fonts就能看到相应字体
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[0];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
if ($pixel) {
for ($i = 0; $i < 50; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
ob_clean();
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
/**
* Created by PhpStorm.
* User: ray
* Date: 15-5-18
* Time: 下午10:40
*/
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
//session_start();
// Generate verification code through GD lib
// Create canvas
$width = 80;
$height = 30;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
// Fill the canvas with white
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
$fontfiles = array("SIMLI.TTF", "SIMYOU.TTF", "STLITI.TTF", "STXIHEI.TTF", "STXINWEI.TTF", "STZHONGS.TTF");
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
if ($pixel) {
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
if ($line) {
for ($i = 1; $i <= $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header("Content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
//session_start();
//create canvas
require_once 'string.func.php';
$width = 80;
$height = 28;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
//use rectangle to fill the canvas
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
$fontfiles = array("msyh.ttc", "msyhbd.ttc", "msyhl.ttc", "SIMLI.TTF", "simsun.ttc", "SIMYOU.TTF", "STZHONGS.TTF");
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$text = substr($chars, $i, 1);
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(9, 180));
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
if ($pixel) {
for ($i = 0; $i < 50; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(9, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
// 创建画布
$width = 80;
$height = 28;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 0, 0, 0);
// 用矩形填充画布
imagefilledrectangle($image, 1, 1, $width - 2, $width - 2, $white);
$type = 3;
$length = 4;
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
$fontfiles = array("Amatic-Bold.ttf", "OpenSans-BoldItalic.ttf");
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
for ($i = 0; $i < $pixel; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
for ($i = 0; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
header("Content-Type:image/gif");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
$width = 80;
$height = 30;
$image = imagecreatetruecolor($width, $height);
$white = imagecolorallocate($image, 255, 255, 255);
$black = imagecolorallocate($image, 255, 255, 255);
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
$chars = buildRandomString($type, $length);
$_SESSION[$sess_name] = $chars;
$fontfiles = array("SIMYOU.TTF");
for ($i = 0; $i < $length; $i++) {
$size = mt_rand(14, 18);
$angle = mt_rand(-15, 15);
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
if ($pixel) {
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
if ($line) {
for ($i = 0; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header("content-type:image/gif");
imagegif($image);
imagedestroy($image);
}
function verifyImage($type = 1, $length = 4, $pixel = 0, $line = 0, $sess_name = "verify")
{
session_start();
//0b_clean()函数丢弃输出缓冲区中的内容
ob_clean();
//通过GD库做验证码
//创建画布宽、高
$width = 80;
$height = 28;
//imagecreatetruecolor()函数新建一个真彩色图像，返回一个图像标示符，代表了一幅大小为X、Y(两个参数)的黑色图像
$image = imagecreatetruecolor($width, $height);
//imagecolorallocate()为一副图像分配颜色，语法：imagecolorallocate(resource $image,$red,$green,$blue)
//填充画布颜色，白色255,255,255,画笔颜色，黑色0,0,0
$white = imagecolorallocate($image, 255, 255, 255);
//$black创建画笔颜色
$black = imagecolorallocate($image, 0, 0, 0);
//imagefilledrectangle()函数，画一矩形并填充，语法：imagefilledrectangle(resource $image,$x1,$y1,$x2,$y2,int $color)
//用填充矩形填充画布，把画布变成白色
imagefilledrectangle($image, 1, 1, $width - 2, $height - 2, $white);
//引用string.func.php文件内的buildRandomString()函数产生随机数
$chars = buildRandomString($type, $length);
//把该验证码赋值给$sess_name，以便后面与用户输入的进行验证对比
$_SESSION['$sess_name'] = $chars;
//因字体文件太大，上传GitHub及下载时过分耗时，故删减成2个字体文件，其余字体可自行添加
//$fontfiles = array("MSYH.TTF","MSYHBD.TTF","SIMLI.TTF","SIMSUN.TTC","SIMYOU.TTF","STZHONGS.TTF");
$fontfiles = array("SIMLI.TTF", "SIMYOU.TTF");
//for循环生成随机验证码
for ($i = 0; $i < $length; $i++) {
//mt_rand()函数，使用Mersenne Twister算法返回随机整数
//$size变量定义字体大小
$size = mt_rand(14, 18);
//angle变量定义字体旋转角度
$angle = mt_rand(-15, 15);
//$x、$y定义了字体在图片内的位置
$x = 5 + $i * $size;
$y = mt_rand(20, 26);
$fontfile = "../fonts/" . $fontfiles[mt_rand(0, count($fontfiles) - 1)];
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
$text = substr($chars, $i, 1);
//imagettftext()函数用TrueType字体向图像写入字体
//array imagettftext ( resource $image , float $size , float $angle , int $x , int $y , int $color , string $fontfile , string $text )
//这里图像源为$image包含的已创建的图床，$size、$angle定义了里面字体的大小及旋转的角度，$x、$y定义了字体在图片内的位置，$color定义了填充的颜色，$fontfile定义了字体路径，$text定义了要输入的数字
imagettftext($image, $size, $angle, $x, $y, $color, $fontfile, $text);
}
//该函数给图像加上小点做干扰，默认是50个点，封装后放入verifyImage()函数中做参数
//$pixel = 50;
if ($pixel) {
for ($i = 0; $i < $pixel; $i++) {
imagesetpixel($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), $black);
}
}
//该函数给图像加上直线，默认是10根，封装后放入verifyImage()函数中做参数
//$line = 10;
if ($line) {
for ($i = 1; $i < $line; $i++) {
$color = imagecolorallocate($image, mt_rand(50, 90), mt_rand(80, 200), mt_rand(90, 180));
imageline($image, mt_rand(0, $width - 1), mt_rand(0, $height - 1), mt_rand(0, $width - 1), mt_rand(0, $height - 1), $color);
}
}
header('Content-Type: image/gif');
//imagegif把图像以gif文件格式输出到浏览器或文件
imagegif($image);
//inagedestroy销毁图像，释放与image关联的内存
imagedestroy($image);
}
<?php /** * Created by PhpStorm. * User: Administrator * Date: 16-1-20 * Time: 上午1:08 */ require_once '../include.php'; $chars = buildRandomString(); $_SESSION['checkCode'] = $chars; echo $chars;
<?php
header('content-type:text/html;charset=utf-8');
function buildRandomString()
{
$str = '1234567890ABCDEFGHIJKLMNOPQRSTUVXYZabcdefghijklmnopqrstuvwyx';
return substr(str_shuffle($str), 0, 6);
}
for ($i = 0; $i < 129; $i++) {
$username = buildRandomString();
$password = md5($username);
$age = mt_rand(0, 100);
$sex = mt_rand(0, 1);
$sql = "INSERT users(username,password,age,sex) VALUES('{$username}','{$password}','{$age}','{$sex}');\n\n";
echo $sql;
}
