PHP解决iframe跨域Cookie无法保存问题

ini_set设置法

ini_set('session.cookie_samesite','None');
ini_set('session.cookie_secure',true);

php7.3以上版本设置方法：

$arr_cookie_options = array (
    'expires' => time()+3600,
    'path' => '/',
    'domain' => '', // leading dot for compatibility or use subdomain
    'httponly' => true, // or false
    'secure' => true,     // or false  重点设置第一项
    'samesite' => 'None' // None || Lax  || Strict 重点设置第二项
);
return setcookie('key', 'value',$arr_cookie_options);

实战thinkphp5.0使用方式 thinkphp\library\think\Cookie.php set方法设置值的时候做php版本判断做设置

if ($config['setcookie']) {

    if(version_compare(PHP_VERSION,'7.3.0','<')){
        setcookie(
            $name, $value, $expire, $config['path'], $config['domain'],
            $config['secure'], $config['httponly']
        );
    }else{
        $arr_cookie_options = array (
            'expires' => $expire,
            'path' => $config['path'],
            'domain' => $config['domain'], // leading dot for compatibility or use subdomain
            'secure' => true,     // or false
            'httponly' => $config['httponly'], // or false
            'samesite' => 'None' // None || Lax  || Strict
        );
        return setcookie($name, $value,$arr_cookie_options);
    }
}