php_curl模拟登录有验证码实例

Posted 2020-07-11 ╭(╯3╰)╮尝尝鲜

<?php
/**
 * @author 追逐__something
 * @version $id
 */
define(\'SCRIPT_ROOT\',dirname(__FILE__).\'/\');
$act = trim($_REQUEST[\'act\']);
switch($act)
{
    case \'login\':
        // 获取验证码
        $code = trim($_REQUEST[\'code\']);
        
        // $loginParams为curl模拟登录时post的参数
        $loginParams[\'act\'] = \'login\';
        $loginParams[\'password\'] = \'111111\';
        $loginParams[\'username\'] = \'wlpadmin\';
        $loginParams[\'vcode\'] = $code;
        
        // $cookieFile 为加载验证码时保存的cookie文件名 
        $cookieFile = SCRIPT_ROOT.\'cookie.tmp\';
        
        // $targetUrl curl 提交的目标地址
        $targetUrl = \'http://local.xx.com/admin/login.php\';
        
        // 参数重置
        $content = curlLogin($targetUrl, $cookieFile, $loginParams);
        echo $content;
    break;
    case \'authcode\':
        // Content-Type 验证码的图片类型
        header(\'Content-Type:image/png\');
        showAuthcode(\'http://local.xx.com/admin/vcode.php?r=0.03192671708666017\');
        exit;
    break;
}

/**
 * 模拟登录
 * @param string $url 提交到的地址
 * @param string $cookieFile 保存cookie的文件
 * @param string $loginParams 提交时要post的参数
 * @return string $content 返回的内容
 */
function curlLogin($url, $cookieFile, $loginParams)
{
    $ch = curl_init($url);
    curl_setopt($ch,CURLOPT_COOKIEFILE, $cookieFile); //同时发送Cookie
    curl_setopt($ch,CURLOPT_RETURNTRANSFER, 1);
    curl_setopt($ch,CURLOPT_POST, 1);
    curl_setopt($ch,CURLOPT_POSTFIELDS, $loginParams); //提交查询信息
    $content = curl_exec($ch);
    curl_close($ch);
    return $content;
}

/**
 * 加载目标网站图片验证码
 * @param string $authcode_url 目标网站验证码地址
 */
function showAuthcode( $authcode_url )
{
    $cookieFile = SCRIPT_ROOT.\'cookie.tmp\';
    $ch = curl_init($authcode_url);
    curl_setopt($ch,CURLOPT_COOKIEJAR, $cookieFile); // 把返回来的cookie信息保存在文件中
    curl_exec($ch);
    curl_close($ch);
}
?>
<iframe src="?act=authcode" style=\'width: 100px; height:40px \' frameborder=0 ></iframe>
<form>
<input type="hidden" name="act" value="login">
<input type="text" name="code" />
<input type="submit" name="submit" >
</form>