PHP common function encapsulation

The content shared with you in this article is the encapsulation of common functions in PHP. Friends who are interested can take a look

1. Determine whether the request is http or https

$http_type = ((isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') || (isset($_SERVER['HTTP_X_FORWARDED_PROTO']) && $_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https')) ? 'https://' : 'http://';

2. Text editor interception:

/** * 将富文本中文字截取其中的一部分 * @param $content * @return string */function html_substr_content($content,$length=100)
{    $content = htmlspecialchars_decode($content);      //把一些预定义的 HTML 实体转换为字符  
    $content = str_replace(" ", "", $content);     //将空格替换成空  
    $content = strip_tags($content);                 //函数剥去字符串中的 HTML、XML 以及 PHP 的标签,获取纯文本内容  
    $con = mb_substr($content, 0, $length, "utf-8");   //返回字符串中的前100字符串长度的字符  
    return $con;}

3. Delete the empty array in the array

//删除数据中的空数组（搜索中常用）function where_data($data)
{    foreach ($data as $k => $v) {        if (empty($v) && $v !='0') {            unset($data[$k]);        }
    }    return $data;}

4.Convert array to object

/** * 数组 转 对象 * @param object $obj 对象 * @return array */function array2object_l($array) {    if (is_array($array)) {        $obj = new StdClass();        foreach ($array as $key => $val){            $obj->$key = $val;        }
    } else {        $obj = $array;    }    return $obj;}

5.Convert xml to array

//xml 转换成数组函数function xmlToArray($simpleXmlElement)
{    $simpleXmlElement = (array)$simpleXmlElement;    foreach ($simpleXmlElement as $k => $v) {        if ($v instanceof SimpleXMLElement || is_array($v)) {            $simpleXmlElement[$k] = xmlToArray($v);        }
    }    return $simpleXmlElement;}

6.Generate Unique order number

function generate_out_trade_no()
{    $a = date('Ymd') . substr(implode(NULL, array_map('ord', str_split(substr(uniqid(), 7, 13), 1))), 0, 8);    return 'F_' . $a . rand(10000000, 99999999);}

7. Determine whether it is a mobile or PC terminal

** * 判断当前访问的用户是  PC端  还是 手机端  返回true 为手机端  false 为PC 端 * @return boolean *//**　　* 是否移动端访问访问　　*　　* @return bool　　*/function isMobile()
{    // 如果有HTTP_X_WAP_PROFILE则一定是移动设备    if (isset ($_SERVER['HTTP_X_WAP_PROFILE']))        return true;    // 如果via信息含有wap则一定是移动设备,部分服务商会屏蔽该信息    if (isset ($_SERVER['HTTP_VIA']))
    {        // 找不到为flase,否则为true        return stristr($_SERVER['HTTP_VIA'], "wap") ? true : false;    }    // 脑残法，判断手机发送的客户端标志,兼容性有待提高    if (isset ($_SERVER['HTTP_USER_AGENT']))
    {        $clientkeywords = array ('nokia','sony','ericsson','mot','samsung','htc','sgh','lg','sharp','sie-','philips','panasonic','alcatel','lenovo','iphone','ipod','blackberry','meizu','android','netfront','symbian','ucweb','windowsce','palm','operamini','operamobi','openwave','nexusone','cldc','midp','wap','mobile');        // 从HTTP_USER_AGENT中查找手机浏览器的关键字        if (preg_match("/(" . implode('|', $clientkeywords) . ")/i", strtolower($_SERVER['HTTP_USER_AGENT'])))            return true;    }    // 协议法，因为有可能不准确，放到最后判断    if (isset ($_SERVER['HTTP_ACCEPT']))
    {        // 如果只支持wml并且不支持html那一定是移动设备        // 如果支持wml和html但是wml在html之前则是移动设备        if ((strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') !== false) && (strpos($_SERVER['HTTP_ACCEPT'], 'text/html') === false || (strpos($_SERVER['HTTP_ACCEPT'], 'vnd.wap.wml') < strpos($_SERVER['HTTP_ACCEPT'], 'text/html'))))
        {            return true;        }
    }    return false;}

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