Captcha.php
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<?php
namespace addons\wechat\controller;
use addons\wechat\library\Wechat;
use addons\wechat\model\WechatCaptcha;
use fast\Http;
/**
* 微信验证码验证接口
*/
class Captcha extends \think\addons\Controller
{
public function _initialize()
{
parent::_initialize();
}
/**
* 验证码检测接口
*/
public function check()
{
$captcha = $this->request->post("captcha");
$event = $this->request->post("event");
$result = WechatCaptcha::check($captcha, $event);
if ($result) {
$this->success("验证码正确");
} else {
$this->error("验证码错误");
}
}
/**
* 验证码发送接口
*/
public function send()
{
$ip = $this->request->ip();
$event = $this->request->post("event");
if (!$event) {
$this->error("参数错误");
}
$captch = WechatCaptcha::where('ip', $ip)
->where('event', $event)
->whereTime('createtime', '-2 minutes')
->find();
if ($captch) {
$this->error("获取频繁，请稍后重试");
}
$token = Wechat::getAccessToken();
if (!$token) {
$this->error("发送失败，请稍后重试");
}
$url = "https://api.weixin.qq.com/cgi-bin/qrcode/create?access_token={$token}";
$params = [
'expire_seconds' => 120,
'action_name' => 'QR_STR_SCENE',
'action_info' => [
'scene' => [
'scene_str' => "captcha_" . $event . "_" . $ip,
]
],
];
$result = Http::sendRequest($url, json_encode($params));
if ($result['ret']) {
$msg = (array)json_decode($result['msg'], true);
if (isset($msg['ticket']) && isset($msg['url'])) {
$this->success("", null, ['image' => "https://mp.weixin.qq.com/cgi-bin/showqrcode?ticket=" . urlencode($msg['ticket']), 'url' => $msg['url']]);
}
}
$this->error("获取失败！请稍后重试");
}
}