blog/lylme_spage
1
0
Fork 0
mirror of https://github.com/LyLme/lylme_spage.git synced 2024-11-17 14:34:08 +08:00
Code Issues Packages Projects Releases Wiki Activity

增加 验证码复杂性

Browse Source
This commit is contained in:
LyLme 2024-01-16 19:49:24 +08:00
parent 448c4cfaa1
commit f7c4d2e7cd
1 changed files with 36 additions and 37 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

73
include/validatecode.php
View File

@ -1,51 +1,50 @@
<?php
session_start();
session_start();
$image = imagecreatetruecolor(100, 38); //1>设置验证码图片大小的函数
//5>设置验证码颜色 imagecolorallocate(int im, int red, int green, int blue);
$bgcolor = imagecolorallocate($image,255,255,255); //#ffffff
//6>区域填充 int imagefill(int im, int x, int y, int col) (x,y) 所在的区域着色,col 表示欲涂上的颜色
imagefill($image, 0, 0, $bgcolor);
//10>设置变量
$captcha_code = "";
//7>生成随机数字
for($i=0;$i<4;$i++){
$image = imagecreatetruecolor(100, 38); //1>设置验证码图片大小的函数
//5>设置验证码颜色 imagecolorallocate(int im, int red, int green, int blue);
$bgcolor = imagecolorallocate($image, 255, 255, 255); //#ffffff
//6>区域填充 int imagefill(int im, int x, int y, int col) (x,y) 所在的区域着色,col 表示欲涂上的颜色
imagefill($image, 0, 0, $bgcolor);
//10>设置变量
$captcha_code = "";
//7>生成随机数字
for ($i = 0; $i < 6; $i++) {
//设置字体大小
$fontsize = 8;
$fontsize = 8;
//设置字体颜色，随机颜色
$fontcolor = imagecolorallocate($image, rand(0,120),rand(0,120), rand(0,120)); //0-120深颜色
$fontcolor = imagecolorallocate($image, rand(0, 120), rand(0, 120), rand(0, 120)); //0-120深颜色
//设置数字
$fontcontent = rand(0,9);
$fontcontent = rand(0, 9);
//10>.=连续定义变量
$captcha_code .= $fontcontent;
$captcha_code .= $fontcontent;
//设置坐标
$x = ($i*100/4)+rand(5,10);
$y = rand(5,10);
$x = ($i * 100 / 6) + rand(5, 10);
$y = rand(5, 10);
imagestring($image,$fontsize,$x,$y,$fontcontent,$fontcolor);
}
//10>存到session
$_SESSION['authcode'] = $captcha_code;
//8>增加干扰元素，设置雪花点
for($i=0;$i<30;$i++){
imagestring($image, $fontsize, $x, $y, $fontcontent, $fontcolor);
}
//10>存到session
$_SESSION['authcode'] = $captcha_code;
//8>增加干扰元素，设置雪花点
for ($i = 0; $i < 15; $i++) {
//设置点的颜色，50-200颜色比数字浅，不干扰阅读
$pointcolor = imagecolorallocate($image,rand(50,200), rand(50,200), rand(50,200));
$pointcolor = imagecolorallocate($image, rand(100, 200), rand(100, 200), rand(100, 200));
//imagesetpixel — 画一个单一像素
imagesetpixel($image, rand(1,99), rand(1,29), $pointcolor);
}
//9>增加干扰元素，设置横线
for($i=0;$i<3;$i++){
imagesetpixel($image, rand(1, 99), rand(1, 29), $pointcolor);
}
//9>增加干扰元素，设置横线
for ($i = 0; $i < 15; $i++) {
//设置线的颜色
$linecolor = imagecolorallocate($image,rand(80,220), rand(80,220),rand(80,220));
$linecolor = imagecolorallocate($image, rand(120, 220), rand(120, 220), rand(120, 220));
//设置线，两点一线
imageline($image,rand(1,99), rand(1,29),rand(1,99), rand(1,29),$linecolor);
}
//2>设置头部，image/png
header('Content-Type: image/png');
//3>imagepng() 建立png图形函数
imagepng($image);
//4>imagedestroy() 结束图形函数 销毁$image
imagedestroy($image);
imageline($image, rand(1, 99), rand(1, 29), rand(1, 99), rand(1, 29), $linecolor);
}
//2>设置头部，image/png
header('Content-Type: image/png');
//3>imagepng() 建立png图形函数
imagepng($image);
//4>imagedestroy() 结束图形函数 销毁$image
imagedestroy($image);