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增加计算类验证

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This commit is contained in:
yunwuxin
2019-01-28 12:48:36 +08:00
parent d1ca0cae74
commit 1d64363c81
2 changed files with 78 additions and 44 deletions
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5
composer.json
View File

@@ -8,7 +8,10 @@
}
],
"license": "Apache-2.0",
"require": {},
"require": {
"topthink/think-installer": ">=1.0.10",
"topthink/framework": "~5.0.0"
},
"autoload": {
"psr-4": {
"think\\captcha\\": "src/"

63
src/Captcha.php
View File

@@ -13,6 +13,23 @@ namespace think\captcha;
use think\Session;
/**
* @property mixed seKey
* @property mixed expire
* @property mixed length
* @property mixed fontSize
* @property float|mixed imageH
* @property float|int|mixed imageW
* @property mixed zhSet
* @property mixed codeSet
* @property mixed reset
* @property mixed fontttf
* @property mixed useZh
* @property mixed useNoise
* @property mixed useCurve
* @property mixed useImgBg
* @property mixed useArithmetic
*/
class Captcha
{
protected $config = [
@@ -46,6 +63,7 @@ class Captcha
// 背景颜色
'reset' => true,
// 验证成功后是否重置
'useArithmetic' => false //是否使用算术验证码
];
private $im = null; // 验证码图片实例
@@ -146,21 +164,7 @@ class Captcha
// 验证码字体随机颜色
$this->color = imagecolorallocate($this->im, mt_rand(1, 150), mt_rand(1, 150), mt_rand(1, 150));
// 验证码使用随机字体
$ttfPath = __DIR__ . '/../assets/' . ($this->useZh ? 'zhttfs' : 'ttfs') . '/';
if (empty($this->fontttf)) {
$dir = dir($ttfPath);
$ttfs = [];
while (false !== ($file = $dir->read())) {
if ('.' != $file[0] && substr($file, -4) == '.ttf') {
$ttfs[] = $file;
}
}
$dir->close();
$this->fontttf = $ttfs[array_rand($ttfs)];
}
$this->fontttf = $ttfPath . $this->fontttf;
if ($this->useImgBg) {
$this->background();
@@ -175,9 +179,34 @@ class Captcha
$this->writeCurve();
}
$ttfPath = __DIR__ . '/../assets/' . ($this->useZh ? 'zhttfs' : 'ttfs') . '/';
// 绘验证码
$code = []; // 验证码
$codeNX = 0; // 验证码第N个字符的左边距
if ($this->useArithmetic) {
$this->fontttf = $ttfPath . '6.ttf';
$code = [mt_rand(1, 9), '+', mt_rand(1, 9)];
foreach ($code as $key => $char) {
$codeNX += $this->fontSize * 1.5;
imagettftext($this->im, $this->fontSize, 0, $codeNX, $this->fontSize * 1.6, $this->color, $this->fontttf, $char);
}
$code = $this->authcode($code[0] + $code[2]);
} else {
// 验证码使用随机字体
if (empty($this->fontttf)) {
$dir = dir($ttfPath);
$ttfs = [];
while (false !== ($file = $dir->read())) {
if ('.' != $file[0] && substr($file, -4) == '.ttf') {
$ttfs[] = $file;
}
}
$dir->close();
$this->fontttf = $ttfs[array_rand($ttfs)];
}
$this->fontttf = $ttfPath . $this->fontttf;
if ($this->useZh) {
// 中文验证码
for ($i = 0; $i < $this->length; $i++) {
@@ -191,10 +220,12 @@ class Captcha
imagettftext($this->im, $this->fontSize, mt_rand(-40, 40), $codeNX, $this->fontSize * 1.6, $this->color, $this->fontttf, $code[$i]);
}
}
$code = $this->authcode(strtoupper(implode('', $code)));
}
// 保存验证码
$key = $this->authcode($this->seKey);
$code = $this->authcode(strtoupper(implode('', $code)));
$secode = [];
$secode['verify_code'] = $code; // 把校验码保存到session
$secode['verify_time'] = time(); // 验证码创建时间
@@ -279,7 +310,7 @@ class Captcha
$noiseColor = imagecolorallocate($this->im, mt_rand(150, 225), mt_rand(150, 225), mt_rand(150, 225));
for ($j = 0; $j < 5; $j++) {
// 绘杂点
imagestring($this->im, 5, mt_rand(-10, $this->imageW), mt_rand(-10, $this->imageH), $codeSet[mt_rand(0, 29)], $noiseColor);
imagestring($this->im, 5, mt_rand(-10, $this->imageW), mt_rand(-10, $this->imageH), $codeSet[mt_rand(0, strlen($codeSet) - 1)], $noiseColor);
}
}
}