php 常用工具函数

返回时间戳差值部分，年、月、日

function get_date_diff($startstamp, $endstamp, $return = 'm')
{
    $y = date('Y', $endstamp) - date('Y', $startstamp);
    $m = date('m', $endstamp) - date('m', $startstamp);

    switch ($return) {
        case 'y':
            if ($y <= 1) {
                $y = $m / 12;
            }
            $string = $y;
            break;
        case 'm':
            $string = $y * 12 + $m;
            break;
        case 'd':
            $string = ($endstamp - $startstamp) / 86400;
            break;
    }
    return $string;
}

判断当前是否为https

function is_https()
{
    if ((isset($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) == 'on')) {
        return true;
    } elseif (isset($_SERVER['REQUEST_SCHEME']) && strtolower($_SERVER['REQUEST_SCHEME']) == 'https') {
        return true;
    } elseif (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']) == 'https') {
        return true;
    } elseif (isset($_SERVER['HTTP_X_CLIENT_SCHEME']) && strtolower($_SERVER['HTTP_X_CLIENT_SCHEME']) == 'https') {
        return true;
    } else {
        return false;
    }
}

获取当前完整URL地址

function get_current_url()
{
    $http_type = is_https() ? 'https://' : 'http://';
    return $http_type . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
}

获取当前访问地址

function get_http_url($noport = false)
{
    if (is_https()) {
        $url = 'https://' . $_SERVER['HTTP_HOST'];
    } else {
        $url = 'http://' . $_SERVER['HTTP_HOST'];
    }
    if ($noport) {
        $url = str_replace(':' . $_SERVER['SERVER_PORT'], '', $url);
    }
    return $url;
}

获取当前访问域名

function get_http_host($noport = true)
{
    if ($noport) {
        return str_replace(':' . $_SERVER['SERVER_PORT'], '', $_SERVER['HTTP_HOST']);
    } else {
        return $_SERVER['HTTP_HOST'];
    }
}

清洗html代码的空白符号

function clear_html_blank($string)
{
    $string = str_replace("\r\n", '', $string); // 清除换行符
    $string = str_replace("\n", '', $string); // 清除换行符
    $string = str_replace("\t", '', $string); // 清除制表符
    $string = str_replace('　', '', $string); // 清除大空格
    $string = str_replace(' ', '', $string); // 清除  
    $string = preg_replace('/\s+/', ' ', $string); // 清除空格
    return $string;
}

是否为移动设备

function is_mobile()
{
    $os = get_user_os();
    if ($os == 'Android' || $os == 'iPhone' || $os == 'Windows Phone' || $os == 'iPad') {
        return true;
    }
}

返回时间戳差值部分，年、月、日

function get_date_diff($startstamp, $endstamp, $return = 'm')
{
    $y = date('Y', $endstamp) - date('Y', $startstamp);
    $m = date('m', $endstamp) - date('m', $startstamp);

    switch ($return) {
        case 'y':
            if ($y <= 1) {
                $y = $m / 12;
            }
            $string = $y;
            break;
        case 'm':
            $string = $y * 12 + $m;
            break;
        case 'd':
            $string = ($endstamp - $startstamp) / 86400;
            break;
    }
    return $string;
}

获取用户浏览器类型

function get_user_bs($bs = null)
{
    if (isset($_SERVER["HTTP_USER_AGENT"])) {
        $user_agent = strtolower($_SERVER["HTTP_USER_AGENT"]);
    } else {
        return null;
    }

    // 直接检测传递的值
    if ($bs) {
        if (strpos($user_agent, strtolower($bs))) {
            return true;
        } else {
            return false;
        }
    }

    // 固定检测
    if (strpos($user_agent, 'micromessenger')) {
        $user_bs = 'Weixin';
    } elseif (strpos($user_agent, 'qq')) {
        $user_bs = 'QQ';
    } elseif (strpos($user_agent, 'weibo')) {
        $user_bs = 'Weibo';
    } elseif (strpos($user_agent, 'alipayclient')) {
        $user_bs = 'Alipay';
    } elseif (strpos($user_agent, 'trident/7.0')) {
        $user_bs = 'IE11'; // 新版本IE优先，避免360等浏览器的兼容模式检测错误
    } elseif (strpos($user_agent, 'trident/6.0')) {
        $user_bs = 'IE10';
    } elseif (strpos($user_agent, 'trident/5.0')) {
        $user_bs = 'IE9';
    } elseif (strpos($user_agent, 'trident/4.0')) {
        $user_bs = 'IE8';
    } elseif (strpos($user_agent, 'msie 7.0')) {
        $user_bs = 'IE7';
    } elseif (strpos($user_agent, 'msie 6.0')) {
        $user_bs = 'IE6';
    } elseif (strpos($user_agent, 'edge')) {
        $user_bs = 'Edge';
    } elseif (strpos($user_agent, 'firefox')) {
        $user_bs = 'Firefox';
    } elseif (strpos($user_agent, 'chrome') || strpos($user_agent, 'android')) {
        $user_bs = 'Chrome';
    } elseif (strpos($user_agent, 'safari')) {
        $user_bs = 'Safari';
    } elseif (strpos($user_agent, 'mj12bot')) {
        $user_bs = 'MJ12bot';
    } else {
        $user_bs = 'Other';
    }
    return $user_bs;
}

获取用户操作系统类型

function get_user_os($osstr = null)
{
    if (isset($_SERVER["HTTP_USER_AGENT"])) {
        $user_agent = strtolower($_SERVER["HTTP_USER_AGENT"]);
    } else {
        return null;
    }

    // 直接检测传递的值
    if ($osstr) {
        if (strpos($user_agent, strtolower($osstr))) {
            return true;
        } else {
            return false;
        }
    }

    if (strpos($user_agent, 'windows nt 5.0')) {
        $user_os = 'Windows 2000';
    } elseif (strpos($user_agent, 'windows nt 9')) {
        $user_os = 'Windows 9X';
    } elseif (strpos($user_agent, 'windows nt 5.1')) {
        $user_os = 'Windows XP';
    } elseif (strpos($user_agent, 'windows nt 5.2')) {
        $user_os = 'Windows 2003';
    } elseif (strpos($user_agent, 'windows nt 6.0')) {
        $user_os = 'Windows Vista';
    } elseif (strpos($user_agent, 'windows nt 6.1')) {
        $user_os = 'Windows 7';
    } elseif (strpos($user_agent, 'windows nt 6.2')) {
        $user_os = 'Windows 8';
    } elseif (strpos($user_agent, 'windows nt 6.3')) {
        $user_os = 'Windows 8.1';
    } elseif (strpos($user_agent, 'windows nt 10')) {
        $user_os = 'Windows 10';
    } elseif (strpos($user_agent, 'windows phone')) {
        $user_os = 'Windows Phone';
    } elseif (strpos($user_agent, 'android')) {
        $user_os = 'Android';
    } elseif (strpos($user_agent, 'iphone')) {
        $user_os = 'iPhone';
    } elseif (strpos($user_agent, 'ipad')) {
        $user_os = 'iPad';
    } elseif (strpos($user_agent, 'mac')) {
        $user_os = 'Mac';
    } elseif (strpos($user_agent, 'sunos')) {
        $user_os = 'Sun OS';
    } elseif (strpos($user_agent, 'bsd')) {
        $user_os = 'BSD';
    } elseif (strpos($user_agent, 'ubuntu')) {
        $user_os = 'Ubuntu';
    } elseif (strpos($user_agent, 'linux')) {
        $user_os = 'Linux';
    } elseif (strpos($user_agent, 'unix')) {
        $user_os = 'Unix';
    } else {
        $user_os = 'Other';
    }
    return $user_os;
}