<?php
/*  
 * global.php   
 * 公共函数库    
 * 更新: Jacky.Chen 2013/10/20 15:45  
 */

/*
 * 返回经addslashes处理过的字符串或数组
 * @param $string 需要处理的字符串或数组
 * @return mixed
 */
function new_add_slashes($string)
{
	if(!is_array($string))return addslashes($string);
	foreach($string as $key=>$val)
	{
		$string[$key] = new_add_slashes($val);
	}
	return $string;
}

/*
 * 返回经stripslashes处理过的字符串或数组
 * @param $string 需要处理的字符串或数组
 * @return mixed
 */
function new_stripslashes($string) {
	if(!is_array($string)) return stripslashes($string);
	foreach($string as $key => $val) $string[$key] = new_stripslashes($val);
	return $string;
}

/*
 * 返回经htmlspecialchars处理过的字符串或数组
 * @param $obj 需要处理的字符串或数组
 * @return mixed
 */
function new_htmlspecialchars($string) {
	if(!is_array($string)) return htmlspecialchars($string);
	foreach($string as $key => $val) $string[$key] = new_htmlspecialchars($val);
	return $string;
}

//filterkeys 指定了排除在外的键值
function safe_replace_array($array,$filterKeys=array())
{
    foreach($array as $k=>$v)
    {
        if(!in_array($k,$filterKeys)) $array[$k] = safe_replace($v);
    }
    return $array;
}

/*
* 安全过滤函数
* @parame $string
* @return string
*/
function safe_replace($string)
{
	$string = str_replace('%20','',$string);
	$string = str_replace('%27','',$string);
	$string = str_replace('%2527','',$string);
	$string = str_replace('*','',$string);
	$string = str_replace('"','&quot;',$string);
	$string = str_replace("'",'',$string);
	$string = str_replace('"','',$string);
	$string = str_replace(';','',$string);
	$string = str_replace('>','&gt;',$string);
	$string = str_replace('<','&lt;',$string);
	$string = str_replace('{','',$string);
	$string = str_replace('}','',$string);
	$string = str_replace('\\','',$string);
	return $string;
}

/**
 * xss过滤函数
 *
 * @param $string
 * @return string
 */
function remove_xss($string) {
	$string = preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x7F]+/S', '', $string);

	$parm1 = Array('javascript', 'vbscript', 'expression', 'applet', 'meta', 'xml', 'blink', 'link', 'script', 'embed', 'object', 'iframe', 'frame', 'frameset', 'ilayer', 'layer', 'bgsound', 'title', 'base');

	$parm2 = Array('onabort', 'onactivate', 'onafterprint', 'onafterupdate', 'onbeforeactivate', 'onbeforecopy', 'onbeforecut', 'onbeforedeactivate', 'onbeforeeditfocus', 'onbeforepaste', 'onbeforeprint', 'onbeforeunload', 'onbeforeupdate', 'onblur', 'onbounce', 'oncellchange', 'onchange', 'onclick', 'oncontextmenu', 'oncontrolselect', 'oncopy', 'oncut', 'ondataavailable', 'ondatasetchanged', 'ondatasetcomplete', 'ondblclick', 'ondeactivate', 'ondrag', 'ondragend', 'ondragenter', 'ondragleave', 'ondragover', 'ondragstart', 'ondrop', 'onerror', 'onerrorupdate', 'onfilterchange', 'onfinish', 'onfocus', 'onfocusin', 'onfocusout', 'onhelp', 'onkeydown', 'onkeypress', 'onkeyup', 'onlayoutcomplete', 'onload', 'onlosecapture', 'onmousedown', 'onmouseenter', 'onmouseleave', 'onmousemove', 'onmouseout', 'onmouseover', 'onmouseup', 'onmousewheel', 'onmove', 'onmoveend', 'onmovestart', 'onpaste', 'onpropertychange', 'onreadystatechange', 'onreset', 'onresize', 'onresizeend', 'onresizestart', 'onrowenter', 'onrowexit', 'onrowsdelete', 'onrowsinserted', 'onscroll', 'onselect', 'onselectionchange', 'onselectstart', 'onstart', 'onstop', 'onsubmit', 'onunload');

	$parm = array_merge($parm1, $parm2);

	for ($i = 0; $i < sizeof($parm); $i++) {
		$pattern = '/';
		for ($j = 0; $j < strlen($parm[$i]); $j++) {
			if ($j > 0) {
				$pattern .= '(';
				$pattern .= '(&#[x|X]0([9][a][b]);?)?';
				$pattern .= '|(&#0([9][10][13]);?)?';
				$pattern .= ')?';
			}
			$pattern .= $parm[$i][$j];
		}
		$pattern .= '/i';
		$string = preg_replace($pattern, '', $string);
	}
	return $string;
}

/**
 * 转义 javascript 代码标记
 *
 * @param $str
 * @return mixed
 */
function trim_script($str) {
	if(is_array($str)){
		foreach ($str as $key => $val){
			$str[$key] = trim_script($val);
		}
	}else{
		$str = preg_replace ( '/\<([\/]?)script([^\>]*?)\>/si', '&lt;\\1script\\2&gt;', $str );
		$str = preg_replace ( '/\<([\/]?)iframe([^\>]*?)\>/si', '&lt;\\1iframe\\2&gt;', $str );
		$str = preg_replace ( '/\<([\/]?)frame([^\>]*?)\>/si', '&lt;\\1frame\\2&gt;', $str );
		$str = str_replace ( 'javascript:', 'javascript：', $str );
	}
	return $str;
}


/*
 * 过滤ASCII码从0-28的控制字符
 * @return String
 */
function trim_unsafe_control_chars($str) {
	$rule = '/[' . chr ( 1 ) . '-' . chr ( 8 ) . chr ( 11 ) . '-' . chr ( 12 ) . chr ( 14 ) . '-' . chr ( 31 ) . ']*/';
	return str_replace ( chr ( 0 ), '', preg_replace ( $rule, '', $str ) );
}

/*
 * 格式化文本域内容
 *
 * @param $string 文本域内容
 * @return string
 */
function trim_textarea($string) {
	$string = nl2br ( str_replace ( ' ', '&nbsp;', $string ) );
	return $string;
}

/**
 * 安全过滤表单输入
 *
 * @param $string
 * @return string
 */
function safe_filter_input($string) {
	if(!is_array($string)) {
		$string = trim($string);
		$string = stripslashes($string);
		$string = htmlspecialchars($string);
		return $string;
	}
	foreach($string as $key => $val) {
		$val = trim($val);
		$val = stripslashes($val);
		$val = htmlspecialchars($val);
		$string[$key] = $val;
	}
	return $string;
}


/*
 * 将文本格式成适合js输出的字符串
 * @param string $string 需要处理的字符串
 * @param intval $isjs 是否执行字符串格式化，默认为执行
 * @return string 处理后的字符串
 */
function format_js($string, $isjs = 1) {
	$string = addslashes(str_replace(array("\r", "\n", "\t"), array('', '', ''), $string));
	return $isjs ? 'document.write("'.$string.'");' : $string;
}
/*
 * 获取当前页面完整URL地址
 */
function get_url() {
	$sys_protocal = isset($_SERVER['SERVER_PORT']) && $_SERVER['SERVER_PORT'] == '443' ? 'https://' : 'http://';
	$php_self = $_SERVER['PHP_SELF'] ? safe_replace($_SERVER['PHP_SELF']) : safe_replace($_SERVER['SCRIPT_NAME']);
	$path_info = isset($_SERVER['PATH_INFO']) ? safe_replace($_SERVER['PATH_INFO']) : '';
	$relate_url = isset($_SERVER['REQUEST_URI']) ? safe_replace($_SERVER['REQUEST_URI']) : $php_self.(isset($_SERVER['QUERY_STRING']) ? '?'.safe_replace($_SERVER['QUERY_STRING']) : $path_info);
	return $sys_protocal.(isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '').$relate_url;
}


/**
 * 字符串截取，支持中英文
 * @param $str
 * @param int $start
 * @param $length
 * @param string $charset
 * @param bool $suffix
 * @return false|string
 * @author 肆月
 */
function str_cut($str, $start = 0, $length,  $dot = '...')
{
    $charset = CHARSET;
    if (function_exists("mb_substr")) {
        if ($dot) {
            if (strlen($str) > $length)
                return mb_substr($str, $start, $length, $charset) . $dot;
            else
                return mb_substr($str, $start, $length, $charset);
        } else {
            return mb_substr($str, $start, $length, $charset);
        }
    } elseif (function_exists('iconv_substr')) {
        if ($dot) {
            if (strlen($str) > $length)
                return iconv_substr($str, $start, $length, $charset). $dot;
            else
                return iconv_substr($str, $start, $length, $charset);
        } else {
            return iconv_substr($str, $start, $length, $charset);
        }
    }
}

//隐藏用户名中间字符仅保留头尾
function hide_user_name($user_name,  $repeatStr = '*', $encode = 'utf-8')
{
    if (empty($user_name)) {
        return '***';
    }
    $length = mb_strlen($user_name, $encode);
    $firstStr = mb_substr($user_name, 0, 1, $encode);
    $lastStr = mb_substr($user_name, -1, 1, $encode);
    if($length ==1){
        return $user_name;
    }
    return $length == 2 ? $firstStr . str_repeat($repeatStr, $length - 1) : $firstStr . str_repeat($repeatStr, $length - 2) . $lastStr;
}

/*
 * 获取请求ip
 * @return ip地址（整数形式）
 */
function ip() {
	if(getenv('HTTP_CLIENT_IP') && strcasecmp(getenv('HTTP_CLIENT_IP'), 'unknown')) {
		$ip = getenv('HTTP_CLIENT_IP');
	} elseif(getenv('HTTP_X_FORWARDED_FOR') && strcasecmp(getenv('HTTP_X_FORWARDED_FOR'), 'unknown')) {
		$ip = getenv('HTTP_X_FORWARDED_FOR');
	} elseif(getenv('REMOTE_ADDR') && strcasecmp(getenv('REMOTE_ADDR'), 'unknown')) {
		$ip = getenv('REMOTE_ADDR');
	} elseif(isset($_SERVER['REMOTE_ADDR']) && $_SERVER['REMOTE_ADDR'] && strcasecmp($_SERVER['REMOTE_ADDR'], 'unknown')) {
		$ip = $_SERVER['REMOTE_ADDR'];
	}
	return preg_match ( '/[\d\.]{7,23}/', $ip, $matches ) ? ip2long($matches [0]) : 0;
}

/*
 * 程序执行时间
 * @return	int	单位ms
 * 
 */
function execute_time() {
	$stime = explode ( ' ', SYS_START_TIME );
	$etime = explode ( ' ', microtime () );
	return number_format ( ($etime [1] + $etime [0] - $stime [1] - $stime [0]), 6 );
}

/*
 * 产生随机字符串
 * @param    int        $length  输出长度
 * @param    string     $chars   可选的 ，默认为 0123456789
 * @return   string     字符串
 * 
 */
function random($length, $chars = '0123456789') {
	$hash = '';
	$max = strlen($chars) - 1;
	for($i = 0; $i < $length; $i++) {
		$hash .= $chars[mt_rand(0, $max)];
	}
	return $hash;
}

/*
 * 将字符串转换为数组
 * @param	string	$data	字符串
 * @return	array	返回数组格式，如果，data为空，则返回空数组
 * 
 */
function string2array($data) {
    $array = array();
	if($data == '') return array();
	eval("\$array = $data;");
	return $array;
}
/**
* 将数组转换为字符串
*
* @param	array	$data		数组
* @param	bool	$isformdata	如果为0，则不使用new_stripslashes处理，可选参数，默认为1
* @return	string	返回字符串，如果，data为空，则返回空
*/
function array2string($data, $isformdata = 1) {
	if($data == '') return '';
	if($isformdata) $data = new_stripslashes($data);
	return  var_export($data, TRUE);
}

/*
 * 转换字节数为其他单位
 * @param	string	$filesize	字节大小
 * @return	string	返回大小
 */
function sizecount($filesize) {
	if ($filesize >= 1073741824) {
		$filesize = round($filesize / 1073741824 * 100) / 100 .'GB';
	} elseif ($filesize >= 1048576) {
		$filesize = round($filesize / 1048576 * 100) / 100 .'MB';
	} elseif($filesize >= 1024) {
		$filesize = round($filesize / 1024 * 100) / 100 . 'KB';
	} else {
		$filesize = $filesize.'Bytes';
	}
	return $filesize;
}

/**
 * @param int $num 要转换的阿拉伯数字
 * @return string 转换成的字符串
 */
function numconvert($num)
{
    if ($num >= 100000000) {
        $num = round($num / 100000000, 1) . '亿+';
    } else if ($num >= 10000000) {
        $num = round($num / 10000000, 1) . '万+';
    } else if ($num >= 10000) {
        $num = round($num / 10000, 1) . '万+';
    }
    return $num;
}


/*
 * 对用户密码进行加密,用于后台
 * @parame $password
 * @parame $encrypt //加密因子
 * @return string
 * 
 */
function password($password,$encrypt='')
{
	
	$pwd = array();
	$pwd['encrypt'] = $encrypt?$encrypt:random(6, $chars = '123456789abcdefghijklmnpqrstuvwxyzABCDEFGHIJKLMNPQRSTUVWXYZ');
	$pwd['password'] = md5(md5($password).$pwd['encrypt']);
	return $encrypt?$pwd['password']:$pwd;

}


/*
 * 判断是否为非法输入
 * @parame $string
 * return boolean
 * 
 */
function is_bad_word($string)
{
	$array = array('"','\\',' ','&','*','#','/','<','>','\r','\t','\n','#',"'");
	foreach($array as $value)
	{
		if(strpos($string,$value)!==false)
		{
			return true;
		}
		else
		{
			return false;
		}
	}

}
/*
 * 对数据进行编码转换
 * @param array/string $data       数组
 * @param string $input     需要转换的编码
 * @param string $output    转换后的编码
 * 
 */
 function array_iconv($data,$input='gbk',$output='utf-8')
 {
 	if(!is_array($data))
	{
		$data =  iconv($input,$output."//IGNORE",$data);
	}
	else
	{
		foreach($data as $key=>$value)
		{
			$data[$key]  = iconv($input,$output."//IGNORE",$value);
		}
	}
 	return $data;
 }
/**
 * 字符串加密、解密函数
 * @param	string	$txt		字符串
 * @param	string	$operation	ENCODE为加密，DECODE为解密，可选参数，默认为ENCODE，
 * @param	string	$key		密钥：数字、字母、下划线
 * @param	string	$expiry		过期时间
 * @return	string
 * 
 */
function sys_auth($string, $operation = 'ENCODE', $key = '', $expiry = 0) {
	$key_length = 4;
	$key = md5($key != '' ? $key : AUTH_KEY);
	$fixedkey = md5($key);
	$egiskeys = md5(substr($fixedkey, 16, 16));
	$runtokey = $key_length ? ($operation == 'ENCODE' ? substr(md5(microtime(true)), -$key_length) : substr($string, 0, $key_length)) : '';
	$keys = md5(substr($runtokey, 0, 16) . substr($fixedkey, 0, 16) . substr($runtokey, 16) . substr($fixedkey, 16));
	$string = $operation == 'ENCODE' ? sprintf('%010d', $expiry ? $expiry + time() : 0).substr(md5($string.$egiskeys), 0, 16) . $string : base64_decode(substr($string, $key_length));

	$i = 0; $result = '';
	$string_length = strlen($string);
	for ($i = 0; $i < $string_length; $i++){
		$result .= chr(ord($string{$i}) ^ ord($keys{$i % 32}));
	}
	if($operation == 'ENCODE') {
		return $runtokey . str_replace('=', '', base64_encode($result));
	} else {
		if((substr($result, 0, 10) == 0 || substr($result, 0, 10) - time() > 0) && substr($result, 10, 16) == substr(md5(substr($result, 26).$egiskeys), 0, 16)) {
			return substr($result, 26);
		} else {
			return '';
		}
	}
}

// 函数返回当前 Unix 时间戳和微秒数
function getmicrotime() {
	list($usec, $sec) = explode(" ",microtime());
	return ((float)$usec + (float)$sec);
}

/*
 * 取得文件扩展
 * @param $filename 文件名
 * @return 扩展名
 * 
 */
function fileext($filename) {
	return strtolower(trim(substr(strrchr($filename, '.'), 1, 10)));
}
/**
 * 查询字符是否存在于某字符串
 *
 * @param $haystack 字符串
 * @param $needle 要查找的字符
 * @return bool
 */
function str_exists($haystack, $needle)
{
	return !(strpos($haystack, $needle) === FALSE);
}

//判断远程文件
function check_remote_file_exists($url)
{
     $handle = @fopen($url, 'r');
     if(!$handle){
         return false;
     }else{
         return true;
     }
}

function check_remote_file_exists1($url)
{
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0); //强制协议为1.0
    curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4 ); //强制使用IPV4协议解析域名
    // 不取回数据
    curl_setopt($curl, CURLOPT_NOBODY, true);
    // 发送请求
    $result = curl_exec($curl);
    $found = false;
    // 如果请求没有发送失败
    if ($result !== false)
    {
        // 再检查http响应码是否为200
        $statusCode = curl_getinfo($curl, CURLINFO_HTTP_CODE);
        if ($statusCode == 200)
        {
            $found = true;
        }
    }
    curl_close($curl);
    return $found;
}


//获取远程文件大小
function remote_file_size($url)
{
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0); //强制协议为1.0
    curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4 ); //强制使用IPV4协议解析域名
	// 不取回数据
	curl_setopt($curl, CURLOPT_NOBODY, true);
	// 发送请求
	$result = curl_exec($curl);
	$size = 0;
	// 如果请求没有发送失败
	if ($result !== false)
	{
		$size = curl_getinfo($curl, CURLINFO_CONTENT_LENGTH_DOWNLOAD);
	}
	curl_close($curl);
	return $size;
}

/*
 * 判断是否为图片
 * 
 */
function is_image($file) {
	$ext_arr = array('jpg','gif','png','bmp','jpeg','tiff');
	$ext = fileext($file);
	return in_array($ext,$ext_arr) ? $ext_arr :false;
}

/*
 * 判断是否为视频
 * 
 */
function is_video($file) {
	$ext_arr = array('rm','mpg','avi','mpeg','wmv','flv','asf','rmvb');
	$ext = fileext($file);
	return in_array($ext,$ext_arr) ? $ext_arr :false;
}


//保存远程图片
function save_remote_file($remote_url,$local_path)
{
	$file = https_request($remote_url);
	file_put_contents($local_path,$file); 
	return $local_path;
}

//根据路径判断是否网络文件
function is_net_file($url)
{
	if(preg_match('/^https?.*$/',$url))//网络文件
	{
		return  true;
	}
	else
	{
		return false;
	}
}
/*
 * 检查id是否存在于数组中
 * @param $id
 * @param $ids
 * @param $s
 * 
 */
function check_in($id, $ids = '', $s = ',') {
	if(!$ids) return false;
	$ids = explode($s, $ids);
	return is_array($id) ? array_intersect($id, $ids) : in_array($id, $ids);
}

//判断目录是否可写
function dir_writeable($dir) {
	$writeable = 0;
	if(is_dir($dir)) {
		if($fp = @fopen("$dir/chkdir.test", 'w')) {
			@fclose($fp);
			@unlink("$dir/chkdir.test");
			$writeable = 1;
		} else {
			$writeable = 0;
		}
	}
	return $writeable;
}

/**
 * 图片水印：gif,jpeg,png
 * @param $imgSrc
 * @param $markImg：水印图
 * @param $markPos：水印位置 0：随机位置，在1~9之间随机选取一个位置
 1：顶部居左 2：顶部居中 3：顶部居右 4：左边居中
 5：图片中心 6：右边居中 7：底部居左 8：底部居中 9：底部居右
 */

function set_img_water($imgSrc,$markImg,$markQty=100,$markPos=9){
	if(intval($markQty)==0)$markQty=100;
	$srcInfo = @getimagesize($imgSrc);
	$srcImg_w = $srcInfo[0];
	$srcImg_h = $srcInfo[1];
	$srcim = null; $markim = null;
	switch ($srcInfo[2])
	{
		case 1:
			$srcim =imagecreatefromgif($imgSrc);  break;
		case 2:
			$srcim =imagecreatefromjpeg($imgSrc); break;
		case 3:
			$srcim =imagecreatefrompng($imgSrc);  break;
		default:
			die('unsupport file type'); exit();
	}
	if(!file_exists($markImg) || empty($markImg)){return;}
	
	$markImgInfo = @getimagesize($markImg);
	$markImg_w = $markImgInfo[0];
	$markImg_h = $markImgInfo[1];
	
	if($srcImg_w < $markImg_w || $srcImg_h < $markImg_h){return false;}
	
	switch ($markImgInfo[2])
	{
		case 1:
			$markim =imagecreatefromgif($markImg);  break;
		case 2:
			$markim =imagecreatefromjpeg($markImg); break;
		case 3:
			$markim =imagecreatefrompng($markImg);  break;
		default:
			return false;//die('不支持的水印图片文件类型');exit();
	}
	
	$logow = $markImg_w;
	$logoh = $markImg_h;
	 
	if($markPos == 0){$markPos = rand(1, 9);}
	
	switch($markPos)
	{
		case 1: $x = +5; 					$y = +5;  					break;//顶部居左
		case 2: $x = ($srcImg_w-$logow)/2;	$y = +5; 					break;//顶部居中
		case 3: $x = $srcImg_w- $logow-5;	$y = +15; 					break;//顶部居右
		case 4: $x = +5;					$y = ($srcImg_h-$logoh)/2; 	break;//左边居中
		case 5: $x = ($srcImg_w-$logow)/2;	$y = ($srcImg_h-$logoh)/2;	break;//图片中心
		case 6: $x = $srcImg_w-$logow-5;	$y = ($srcImg_h-$logoh)/2; 	break;//右边居中
		case 7: $x = +5;					$y = $srcImg_h-$logoh-5;	break;//底部居左
		case 8: $x = ($srcImg_w-$logow)/2;	$y = $srcImg_h-$logoh-5;	break;//底部居中
		case 9: $x = $srcImg_w-$logow-5;	$y = $srcImg_h-$logoh-5;	break;//底部居右
		default:
			return false;//die('此位置不支持');exit;
	}
	
	$dst_img = @imagecreatetruecolor($srcImg_w, $srcImg_h);
	imagecopy($dst_img, $srcim, 0, 0, 0, 0, $srcImg_w, $srcImg_h);
	imagecopy($dst_img, $markim, $x, $y, 0, 0, $logow, $logoh);
	imagedestroy($markim);
	
	switch ($srcInfo[2])
	{
		case 1: imagegif($dst_img, $imgSrc); break;
		case 2: imagejpeg($dst_img, $imgSrc);break;
		case 3: imagepng($dst_img, $imgSrc); break;
		default: break;
	}
	imagedestroy($dst_img);
	imagedestroy($srcim);
	return true;
}

//获取一个唯一文件名
function get_unique_file_name($path,$ext)
{
	$fileName = TIMESTAMP.random(6, '0123456789abcdefghijklmnopqrstuvwxyz').".".$ext;//文件重命名
	if(!file_exists($path.$fileName))
	{
		return $fileName;
	}
	else 
	{
		return get_unique_file_name($path,$ext);
	}
}

//转换数组为可适应SQL语句插入语法值集合
function change_array_to_sql_string($array=array()){ //转换数组为可适应SQL语句插入语法值集合
	$array=str_replace("'","\'",$array);
	return "'".implode("','",$array)."'";
}

// 截取某部分字符
function interception_of_string($string='',$start='',$end='')
{
  if($string==''){return '';}
  if($start!='')
  {
   $pos = strpos($string,$start);
   if($pos===false)
   {
    return '';
   }
   else
   {
    $pos += strlen($start);
    $string = substr($string,$pos);
   }
  }
 
  if($end!='')
  {
   $pos = strpos($string,$end);
   if($pos)
   {
    $string = substr($string,0,$pos);
   }
  }
 
  return $string;
 }


//Curl
function https_request($url,$options = null,$data = null,$header = null){
	$curl = curl_init();
	curl_setopt($curl, CURLOPT_URL, $url);
	curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE);
	curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
    curl_setopt($curl, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0); //强制协议为1.0
    curl_setopt($curl, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4 ); //强制使用IPV4协议解析域名
	if (!empty($data)){
		curl_setopt($curl, CURLOPT_POST, 1);
		curl_setopt($curl, CURLOPT_POSTFIELDS, http_build_query($data));
	}
    (isset($options['header'])&&$options['header'])?curl_setopt($curl, CURLOPT_HEADER, 1): curl_setopt($curl, CURLOPT_HEADER, 0);//如果有响应头
    if(!empty($header))//如果有请求头
    {
        $curl_header = array();
        foreach($header as $key=>$value)
        {
            $curl_header[] = "$key:$value";
        }
        curl_setopt($curl,CURLOPT_HTTPHEADER, $curl_header);
    }
    if(isset($options['gzip'])&&$options['gzip']==1) curl_setopt($curl, CURLOPT_ENCODING, "gzip"); //如果页面开启了GZIP压缩
	curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
	curl_setopt($curl, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0');
    if(!empty($options['time_out']))
    {
        curl_setopt($curl, CURLOPT_TIMEOUT, $options['time_out']);
    }
    else
    {
        curl_setopt($curl, CURLOPT_TIMEOUT, 15);
    }
    curl_setopt ($curl, CURLOPT_REFERER, get_url());
	$output = curl_exec($curl);
	curl_close($curl);
	return $output;
}

/**批量替换敏感词
 * @param array $badwords 敏感词数组
 * @param array $replacement 替换词数组
 * @param string $str 待替换内容
 * @return string 
 */
function multi_replace($badwords,$replacement,$str)
{
	$replaceList = array();
	if(is_array($badwords))
	{
		foreach($badwords as $badword)
		{
			$length = mb_strlen($badword,CHARSET);
			$temp='';
			for($i=0;$i<$length;$i++)
			{
				$temp .= $replacement;
			}
			$replaceList[] = $temp;
		}
	}
	return $str = str_replace($badwords,$replaceList,$str);
}

/**封装后的配置文件包含方法
 */
function require_config($file)
{
	if(defined('SITE_MODE'))
	{
		return require BASE_PATH.'config'.DIRECTORY_SEPARATOR.SITE_MODE.DIRECTORY_SEPARATOR.$file;
	}
	else 
	{
		return require BASE_PATH.'config'.DIRECTORY_SEPARATOR.$file;
	}
}

//格式正则校验
function pattern_check($type,$value)
{
	switch($type)
	{
		case 'url':
			$pattern = '/^(https?:\/\/)?([\da-z\.-]+)\.([a-z\.]{2,6})([\/\w \.-]*)*\/?$/';
			break;
		case 'email':
			$pattern = '/^([a-z0-9_\.-]+)@([\da-z\.-]+)\.([a-z\.]{2,6})$/';
			break;
		default:break;
	}
	if(!empty($pattern)&&preg_match($pattern,$value)){
		return true;
	}
	else{
		return false;
	}
}

//请求安全检测
function check_safe_request_params(){
	$getfilter="'|<[^>]*?>|^\\+\/v(8|9)|\\b(and|or)\\b.+?(>|<|=|\\bin\\b|\\blike\\b)|\\/\\*.+?\\*\\/|<\\s*script\\b|\\bEXEC\\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\\s+(TABLE|DATABASE)";
	$postfilter="^\\+\/v(8|9)|\\b(and|or)\\b.{1,6}?(=|>|<|\\bin\\b|\\blike\\b)|\\/\\*.+?\\*\\/|<\\s*script\\b|<\\s*img\\b|\\bEXEC\\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\\s+(TABLE|DATABASE)";
	$cookiefilter="\\b(and|or)\\b.{1,6}?(=|>|<|\\bin\\b|\\blike\\b)|\\/\\*.+?\\*\\/|<\\s*script\\b|\\bEXEC\\b|UNION.+?SELECT|UPDATE.+?SET|INSERT\\s+INTO.+?VALUES|(SELECT|DELETE).+?FROM|(CREATE|ALTER|DROP|TRUNCATE)\\s+(TABLE|DATABASE)";
	$referer=empty($_SERVER['HTTP_REFERER']) ? array() : array($_SERVER['HTTP_REFERER']);
	foreach($_GET as $key=>$value){
		if (!check_request_params_ok($key,$value,$getfilter)){exit;}
	}
	foreach($_POST as $key=>$value){
		if (!check_request_params_ok($key,$value,$postfilter)){exit;}
	}
	foreach($_COOKIE as $key=>$value){
		if (!check_request_params_ok($key,$value,$cookiefilter)){exit;}
	}
	foreach($referer as $key=>$value){
		if (!check_request_params_ok($key,$value,$getfilter)){exit;}
	}
}

//请求安全检测：子方法
function check_request_params_ok($StrFiltKey,$StrFiltValue,$ArrFiltReq){
	$StrFiltValue=arr_foreach($StrFiltValue);
	if (preg_match('/'.$ArrFiltReq.'/is',$StrFiltValue)==1 || preg_match('/'.$ArrFiltReq.'/is',$StrFiltKey)==1){return false;}
	return true;
}
function arr_foreach($arr) {
	static $str;
	if (!is_array($arr)) {return $arr;}
	foreach ($arr as $key => $val ) {
		if (is_array($val)) {arr_foreach($val);} else {$str[] = $val;}
	}
	return implode($str);
}

//带超时时间设置的file_get_contents
function new_file_get_contents($url,$timeout=null)
{
    if(isset($timeout))
    {
        $opts = array(
            'http'=>array(
                'method'=>"GET",
                'timeout'=>$timeout,//单位秒
            )
        );
        return file_get_contents( $url, false, stream_context_create($opts));
    }
    else
    {
        return file_get_contents($url);
    }

}

//判断是否蜘蛛请求
function checkrobot($useragent = '') {
    static $kw_spiders = array('bot', 'crawl', 'spider' ,'slurp', 'sohu-search', 'lycos', 'robozilla','haosouspider','baidu','sogou','yisouspider','360spider','baiduspide','soso','yahoo','bingbot');
    static $kw_browsers = array('msie', 'netscape', 'opera', 'konqueror', 'mozilla');
    $useragent = strtolower(empty($useragent) ? $_SERVER['HTTP_USER_AGENT'] : $useragent);
    if(strpos($useragent, 'http://') === false && dstrpos($useragent, $kw_browsers)) return false;
    if(dstrpos($useragent, $kw_spiders)) return true;
    return false;
}

function dstrpos($string, &$arr, $returnvalue = false) {
    if(empty($string)) return false;
    foreach((array)$arr as $v) {
        if(strpos($string, $v) !== false) {
            $return = $returnvalue ? $v : true;
            return $return;
        }
    }
    return false;
}


//压缩html
function compress_html($str){
    $str = trim($str);
    $str = str_replace("\t","",$str);
    $str = str_replace("\r\n","",$str);
    $str = str_replace("\r","",$str);
    $str = str_replace("\n","",$str);
    $str=preg_replace("/>[ ]+/si",">",$str); //过滤>(">"号后面带空格)
    $str=preg_replace("/[ ]+</si","<",$str); //过滤<("<"号前面带空格)
    return trim($str);
}

//字符串过滤，只保留汉字数字英文标点符号
function removeHtml($html,$filter=1)
{
    $html  = htmlspecialchars_decode($html);  //把一些预定义的 HTML 实体转换为字符
    $html = strip_tags($html);               //函数剥去字符串中的 HTML、XML 以及 PHP 的标签,获取纯文本内容
    $html = trim($html); //清除字符串两边的空格
    $html = str_replace("&nbsp;","",$html);
    $html = preg_replace("/\t/","",$html); //使用正则表达式替换内容，如：空格，换行，并将替换为空。
    $html = preg_replace("/\r\n/","",$html);
    $html = preg_replace("/\r/","",$html);
    $html = preg_replace("/\n/","",$html);
    $html = preg_replace("/ /","",$html);
    $html = preg_replace("/ /","",$html); //匹配html中的空格
    $html =  preg_replace('/($s*$)|(^s*^)/m', '',$html);
    if($filter)
    {
        preg_match_all('/[\x{4e00}-\x{9fa5}a-zA-Z0-9。、！？：；﹑•＂…‘’“”〝〞∕¦‖—　〈〉﹞﹝「」‹›〖〗】【»«』『〕〔》《﹐¸﹕︰﹔！¡？¿﹖﹌﹏﹋＇´ˊˋ―﹫︳︴¯＿￣﹢﹦﹤‐­˜﹟﹩﹠﹪﹡﹨﹍﹉﹎﹊ˇ︵︶︷︸︹︿﹀︺︽︾ˉ﹁﹂﹃﹄︻︼（）]/u', $html, $result);
        return implode('', $result[0]);
    }
    else
    {
        return $html;
    }

}

//对转换过程中获取的内容做初始处理
function beforeProcessHtml($html)
{
    preg_match_all('/[\x{4e00}-\x{9fa5}a-zA-Z0-9]/u', $html, $testResult);
    if(empty($testResult[0]))
    {
        $html =  mb_convert_encoding($html,  'UTF-8', 'UTF-8');
        preg_match_all('/[\x{4e00}-\x{9fa5}a-zA-Z0-9。、！？：；﹑•＂…‘’“”〝〞∕¦‖—　〈〉﹞﹝「」‹›〖〗】【»«』『〕〔》《﹐¸﹕︰﹔！¡？¿﹖﹌﹏﹋＇´ˊˋ―﹫︳︴¯＿￣﹢﹦﹤‐­˜﹟﹩﹠﹪﹡﹨﹍﹉﹎﹊ˇ︵︶︷︸︹︿﹀︺︽︾ˉ﹁﹂﹃﹄︻︼（）]/u', $html, $result);
        return implode('', $result[0]);
    }
    else
    {
        return  $html;
    }

}

//获取所有的cookie内容
function get_all_cookie_str(){
    $ckeStr='';
    foreach ($_COOKIE as $ckeName=>$ckeVal){
        if(!is_array($ckeVal)){
            $ckeStr.= $ckeName.'='.$ckeVal.';';
        }
    }
    $ckeStr = substr($ckeStr, 0,-1);//去除最后的 ;
    return $ckeStr;
}


//PHP默认serialize有时会出错 http://us.php.net/manual/en/function.unserialize.php#71270
function mb_unserialize($serial_str) {
    $serial_str= preg_replace('!s:(\d+):"(.*?)";!se', "'s:'.strlen('$2').':\"$2\";'", $serial_str );
    $serial_str= str_replace("\r", "", $serial_str);
    return unserialize($serial_str);
}

//判断是否是移动端访问
function check_mobile($debug = false) {
    static $touchbrowser_list =array('iphone', 'android', 'phone', 'mobile', 'wap', 'netfront', 'java', 'opera mobi', 'opera mini',
        'ucweb', 'windows ce', 'symbian', 'series', 'webos', 'sony', 'blackberry', 'dopod', 'nokia', 'samsung',
        'palmsource', 'xda', 'pieplus', 'meizu', 'midp', 'cldc', 'motorola', 'foma', 'docomo', 'up.browser',
        'up.link', 'blazer', 'helio', 'hosin', 'huawei', 'novarra', 'coolpad', 'webos', 'techfaith', 'palmsource',
        'alcatel', 'amoi', 'ktouch', 'nexian', 'ericsson', 'philips', 'sagem', 'wellcom', 'bunjalloo', 'maui', 'smartphone',
        'iemobile', 'spice', 'bird', 'zte-', 'longcos', 'pantech', 'gionee', 'portalmmm', 'jig browser', 'hiptop',
        'benq', 'haier', '^lct', '320x320', '240x320', '176x220');
    static $mobilebrowser_list =array('windows phone');
    static $wmlbrowser_list = array('cect', 'compal', 'ctl', 'lg', 'nec', 'tcl', 'alcatel', 'ericsson', 'bird', 'daxian', 'dbtel', 'eastcom',
        'pantech', 'dopod', 'philips', 'haier', 'konka', 'kejian', 'lenovo', 'benq', 'mot', 'soutec', 'nokia', 'sagem', 'sgh',
        'sed', 'capitel', 'panasonic', 'sonyericsson', 'sharp', 'amoi', 'panda', 'zte');

    $pad_list = array('pad', 'gt-p1000');
    $useragent = strtolower($_SERVER['HTTP_USER_AGENT']);
    if(($v = dstrpos($useragent, $mobilebrowser_list, true))){
        return '1'; //windows phone
    }
    if(($v = dstrpos($useragent, $touchbrowser_list, true))){
        return '2';
    }
    if(($v = dstrpos($useragent, $wmlbrowser_list))) {
        return '3'; //wml版
    }
    $brower = array('mozilla', 'chrome', 'safari', 'opera', 'm3gate', 'winwap', 'openwave', 'myop');
    if(dstrpos($useragent, $brower)) return false;
    return false;
}

//时间换算
function info_last_time($time,$ac="Y年m月d日") {
    $now=TIMESTAMP-$time;
    $timestr = (substr_count($ac,'-')>0?'Y-m-d':'Y年m月d日');
    if ($now>3456000)  return get_date($time,$timestr);
    elseif ($now>345600)  return get_date($time,$ac);
    elseif ($now>259200) return "三天前";
    elseif ($now>172800) return "两天前";
    elseif ($now>86400) return "一天前";
    elseif ($now>72000) return "二十小时前";
    elseif ($now>54000) return "十五小时前";
    elseif ($now>43200) return "十二小时前";
    elseif ($now>36000) return "十小时前";
    elseif ($now>28800) return "八小时前";
    elseif ($now>21600) return "六小时前";
    elseif ($now>18000) return "五小时前";
    elseif ($now>10800) return "三小时前";
    elseif ($now>7200) return "两小时前";
    elseif ($now>3600) return "一小时前";
    elseif ($now>1800) return "半小时前";
    elseif ($now>1200) return "二十分钟前";
    elseif ($now>900) return "十五分钟前";
    elseif ($now>600) return "十分钟前";
    elseif ($now>300) return "五分钟前";
    elseif ($now>180) return "三分钟前";
    elseif ($now>120) return "两分钟前";
    elseif ($now>=0) return "一分钟前";
    elseif ($now<0) return "一秒钟前";
    return get_date($time,$ac);
}
/**
 * 格式化时间戳为日期字符串
 * @global string $db_datefm
 * @global string $db_timedf
 * @global string $_datefm
 * @global string $_timedf
 * @param int $timestamp
 * @param string $format
 * @return string
 */
function get_date($timestamp, $format = null) {
    if(empty($timestamp))return '';
    $obj = new \DateTime("@$timestamp"); // 这里时间戳前要写一个@符号
    $timezone = timezone_open(TIME_ZONE); // 设置时区
    $obj->setTimezone($timezone);
    $sDefaultFormat = $format ? $format : 'Y-m-d H:i';
    return $obj->format($sDefaultFormat);
}

//日期转时间戳
function str_to_time($str)
{
    $date = new \DateTime($str);
    return  $date->format('U');
}

//301跳转
function header_goto($str) {
    Header("HTTP/1.1 301 Moved Permanently");
    Header($str);exit;
}


/**
 * 截断字符串
 *
 * @param string $content 内容
 * @param int $length 截取字节数
 * @param string $add 是否带省略号，Y|N
 * @return string
 */

function substrs($content, $length, $add = 'Y') {
	if (strlen($content) > $length) {
		if (CHARSET != 'utf-8') {
			$cutStr = '';
			for ($i = 0; $i < $length - 1; $i++) {
				$cutStr .= ord($content[$i]) > 127 ? $content[$i] . $content[++$i] : $content[$i];
			}
			$i < $length && ord($content[$i]) <= 127 && $cutStr .= $content[$i];
			return $cutStr . ($add == 'Y' ? ' ..' : '');
		}
		return utf8_trim(substr($content, 0, $length)) . ($add == 'Y' ? ' ..' : '');
	}
	return $content;
}

/**
 * utf8字符串整齐化
 *
 * @param string $str
 * @return string
 */
function utf8_trim($str) {
	$hex = '';
	$len = strlen($str) - 1;
	for ($i = $len; $i >= 0; $i -= 1) {
		$ch = ord($str[$i]);
		$hex .= " $ch";
		if (($ch & 128) == 0 || ($ch & 192) == 192) {return substr($str, 0, $i);}
	}
	return $str . $hex;
}


function echo_json($arr){
    ob_clean();
    header('Content-type: application/json');
    echo json_encode($arr);exit;
}

//生成唯一订单号
function getUniOrderNo()
{
    $order_id = get_date(TIMESTAMP,'Ymd').substr(implode(NULL, array_map('ord', str_split(substr(uniqid(), 7, 13), 1))), 0, 8);
    $exists = \app\modules\shopping\models\ShoppingOrder::find()->where("order_sn='".$order_id."'")->exists();
    if($exists)
    {
        return getUniOrderNo();
    }
    else
    {
        return $order_id;
    }

}
//生成唯一券号
function getUniCouponNo()
{
    $coupon_no = get_date(TIMESTAMP,'Ymd').substr(implode(NULL, array_map('ord', str_split(substr(uniqid(), 7, 13), 1))), 0, 8);
    $exists = \app\modules\ucenter\models\UserVipCoupon::find()->where("coupon_no='".$coupon_no."'")->exists();
    if($exists)
    {
        return getUniCouponNo();
    }
    else
    {
        return $coupon_no;
    }

}
//生成唯一订单号(毫秒级)
function getProUniOrderNo()
{
    $order_id_main = get_date(TIMESTAMP,'YmdHis') . rand(10,99);
    $order_id_len = strlen($order_id_main);
    $order_id_sum = 0;
    for($i=0; $i<$order_id_len; $i++){
        $order_id_sum += (int)(substr($order_id_main,$i,1));
    }
    $order_id = $order_id_main . str_pad((100 - $order_id_sum % 100) % 100,2,'0',STR_PAD_LEFT);
    return $order_id;
}

/**
 *  二維数组排序
 */
function array_sort($arr,$sort)
{
   /* $sort = array(
        'direction' => 'SORT_DESC', //排序顺序标志 SORT_DESC 降序；SORT_ASC 升序
        'field'     => 'length',     //排序字段
    );*/

    $arrSort = array();
    foreach($arr AS $uniqid => $row){
        foreach($row AS $key=>$value){
            $arrSort[$key][$uniqid] = $value;
        }
    }
    if($sort['direction']){
        array_multisort($arrSort[$sort['field']], constant($sort['direction']), $arr);
    }
    return $arr;
}

/**
 * 可以统计中文字符串长度的函数
 * @param $str 要计算长度的字符串
 * @param $type 计算长度类型，0(默认)表示一个中文算一个字符，1表示一个中文算两个字符
 */
function abslength($str)
{
    if(empty($str)){
        return 0;
    }
    if(function_exists('mb_strlen')){
        return mb_strlen($str,'utf-8');
    }
    else {
        preg_match_all("/./u", $str, $ar);
        return count($ar[0]);
    }
}


//过滤微信表情
function filterEmoji($nickname)
{
    $nickname = preg_replace('/[\x{1F600}-\x{1F64F}]/u', '', $nickname);
    $nickname = preg_replace('/[\x{1F300}-\x{1F5FF}]/u', '', $nickname);
    $nickname = preg_replace('/[\x{1F680}-\x{1F6FF}]/u', '', $nickname);
    $nickname = preg_replace('/[\x{2600}-\x{26FF}]/u', '', $nickname);
    $nickname = preg_replace('/[\x{2700}-\x{27BF}]/u', '', $nickname);
    $nickname = str_replace(array('"','\''), '', $nickname);
    return $nickname;
}

//单条对象记录转数组
function single_object_to_array($result,$needfield = array())
{
    $info = array();
    if(is_object($result))
    {
        foreach($result as $key=>$value)
        {
            if(!empty($needfield)&&in_array($key,$needfield))
            {
                $info[$key] = $value;
            }
            if(empty($needfield))
            {
                $info[$key] = $value;
            }
        }
        return $info;
    }
    else
    {
        return $result;
    }

}

//获得文件绝对路径
function getFileUrl($path,$internal=0)
{
    if(empty($path)) return;
    if(strpos($path,'http')!==false)
    {
        $path = str_replace(array('https://','http://'),array(SITE_PROTOCOL,SITE_PROTOCOL),$path);
    }
    else
    {
        //如果开启了OSS
        if(Yii::$app->params['oss']['OPEN_OSS'])
        {
            if($internal==1)
            {
                $path =  getOssInterUrl().$path;
            }
            else
            {
                $path =  getOssUrl().$path;
            }
        }
        else
        {
            $path =  UPLOAD_URL.$path;
        }

    }
    if(IN_WAP)
    {
        $path = str_replace(WEB_URL,WAP_URL,$path);
    }
    return $path;
}


//获得文件转换结果路径
function getFileWorkPath($file)
{
    $result = parse_url($file);
    $path= str_replace('/upload/','',$result['path']);
    $ext = fileext($path);
    $workpath = dirname($path).DIRECTORY_SEPARATOR.md5(basename($path,'.'.$ext)).DIRECTORY_SEPARATOR;
    $workpath = ltrim(str_replace(DIRECTORY_SEPARATOR,'/',$workpath),'/');
    return $workpath;
}

//获得文件相对路径
function getFilePath($file)
{
    $result = parse_url($file);
    $path= str_replace('/upload/','',$result['path']);
    return $path;
}

function unserializeFileRealUrl($string,$first=true)
{
    $fileList = string2array($string);
    $urls = '';
    if($first)
    {
        if(isset($fileList['filepath']))
        {
            if(!empty($fileList['filepath']))
            {
                $urls = getFileUrl($fileList['filepath']);
            }
        }
        else
        {
            if(!empty($fileList[0]['filepath']))
            {
                if(strpos($fileList[0]['fileurl'],'http')!==false)
                {
                    return $fileList[0]['fileurl'];
                }
                else
                {
                    $urls = getFileUrl($fileList[0]['filepath']);
                }
            }
        }
    }
    else
    {
        $urls = array();
        if(is_array($fileList))foreach($fileList as $file)
        {
            if(!empty($file['filepath']))$urls[] = getFileUrl($file['filepath']);
        }
    }
    return $urls;
}


//判断是否是手机站
function is_wap_site()
{
    if(IN_WAP==true)
    {
        return true;
    }
    else
    {
        return false;
    }
}


//判断是IOS或安卓系统
function get_device_type()
{
    //全部变成小写字母
    $agent = strtolower($_SERVER['HTTP_USER_AGENT']);
    $type ='other';
    //分别进行判断
    if(strpos($agent,'iphone') || strpos($agent,'ipad'))
    {
        $type ='ios';
    }
    if(strpos($agent,'android'))
    {
        $type ='android';
    }
    return $type;
}

//判断是否是微信访问
function check_micromsg()
{
    $agent =  strtolower($_SERVER['HTTP_USER_AGENT']);
    if (stripos($agent, 'MicroMessenger') !== false)
    {
        return true;
    } else {
        return false;
    }
}

//判断是否是百度小程序访问
function check_baiduapp()
{
    $agent =  strtolower($_SERVER['HTTP_USER_AGENT']);
    if (stripos($agent, 'baiduboxapp') !== false)
    {
        return true;
    } else {
        return false;
    }
}

//判断是否是微信小程序访问
function check_wxapp()
{
    $agent =  strtolower($_SERVER['HTTP_USER_AGENT']);
    if (stripos($agent, 'miniprogram') !== false)
    {
        return true;
    } else {
        return false;
    }
}

/*
 * 作用：用*号替代姓名除第一个字之外的字符
 * 参数：
 *
 *
 * 返回值：string
 */
function starReplace($name, $num = 0)
{
    if ($num && mb_strlen($name, 'UTF-8') > $num) {
        return mb_substr($name, 0, 4) . '*';
    }

    if ($num && mb_strlen($name, 'UTF-8') <= $num) {
        return $name;
    }

    $doubleSurname = [
        '欧阳', '太史', '端木', '上官', '司马', '东方', '独孤', '南宫',
        '万俟', '闻人', '夏侯', '诸葛', '尉迟', '公羊', '赫连', '澹台', '皇甫', '宗政', '濮阳',
        '公冶', '太叔', '申屠', '公孙', '慕容', '仲孙', '钟离', '长孙', '宇文', '司徒', '鲜于',
        '司空', '闾丘', '子车', '亓官', '司寇', '巫马', '公西', '颛孙', '壤驷', '公良', '漆雕', '乐正',
        '宰父', '谷梁', '拓跋', '夹谷', '轩辕', '令狐', '段干', '百里', '呼延', '东郭', '南门', '羊舌',
        '微生', '公户', '公玉', '公仪', '梁丘', '公仲', '公上', '公门', '公山', '公坚', '左丘', '公伯',
        '西门', '公祖', '第五', '公乘', '贯丘', '公皙', '南荣', '东里', '东宫', '仲长', '子书', '子桑',
        '即墨', '达奚', '褚师', '吴铭'
    ];

    $surname = mb_substr($name, 0, 2);
    if (in_array($surname, $doubleSurname)) {
        $name = mb_substr($name, 0, 2) . str_repeat('*', (mb_strlen($name, 'UTF-8') - 2));
    } else {
        $name = mb_substr($name, 0, 1) . str_repeat('*', (mb_strlen($name, 'UTF-8') - 1));
    }


    return $name;
}

//比如找回密码当中邮件验证码用到的
function randString($length=32)
{
    return Yii::$app->getSecurity()->generateRandomString($length);
}

//生成密码
function generatePwd($password)
{

    return Yii::$app->getSecurity()->generatePasswordHash($password);

}

//校验密码
function validatePwd($password,$hash)
{
   return Yii::$app->getSecurity()->validatePassword($password, $hash);
}

//页面元素 name 转ID
function nameToId($name)
{
    $name = str_replace('[','-',$name);
    $name = str_replace(']','',$name);
    return strtolower($name);
}

//抛出404
function do404()
{
    throw new \Exception('页面未找到',404);
}


function isSpider() {
    $agent= strtolower($_SERVER['HTTP_USER_AGENT']);
    if (!empty($agent)) {
        $spiderSite= array(
            "TencentTraveler",
            "Baiduspider+",
            "BaiduGame",
            "Googlebot",
            "msnbot",
            "Sosospider+",
            "Sogou web spider",
            "ia_archiver",
            "Yahoo! Slurp",
            "YoudaoBot",
            "Yahoo Slurp",
            "MSNBot",
            "Java (Often spam bot)",
            "BaiDuSpider",
            "Voila",
            "Yandex bot",
            "BSpider",
            "twiceler",
            "Sogou Spider",
            "Speedy Spider",
            "Google AdSense",
            "Heritrix",
            "Python-urllib",
            "Alexa (IA Archiver)",
            "Ask",
            "Exabot",
            "Custo",
            "OutfoxBot/YodaoBot",
            "yacy",
            "SurveyBot",
            "legs",
            "lwp-trivial",
            "Nutch",
            "StackRambler",
            "The web archive (IA Archiver)",
            "Perl tool",
            "MJ12bot",
            "Netcraft",
            "MSIECrawler",
            "WGet tools",
            "larbin",
            "Fish search",
        );
        foreach($spiderSite as $val) {
            $str = strtolower($val);
            if (strpos($agent, $str) !== false) {
                return true;
            }
        }
    } else {
        return false;
    }
}


/**
 * @param array $_define   默认seo配置
 * @param unknown_type $_values	对应 targets 的一组值
 * @param unknown_type $_targets
 * @return multitype:string
 */
function seoSettings($_define = array(), $_replaceconfig = array(),$_default = array()) {

    if (!empty($_define)) {
        $cTitle = $_define[$_replaceconfig['pre'].'meta_title'];
        $cKeywords = $_define[$_replaceconfig['pre'].'meta_keywords'];
        $cDescription = $_define[$_replaceconfig['pre'].'meta_description'];
    }
    $_values = $_replaceconfig['values'];
    $_targets = $_replaceconfig['targets'];
    /* 过滤参数 */
    foreach ($_values as $key => $value) {
        $_values[$key] = empty($value) ? '' : trim(strip_tags($value));
    }

    /*设置默认值*/
    empty($cTitle) && $cTitle = $_default['meta_title'];
    empty($cKeywords) && $cKeywords = $_default['meta_keywords'];
    empty($cDescription) && $cDescription = $_default['meta_description'];

    /* 参数处理 */
    $webPageTitle = parseSeoTargets($cTitle, $_values, $_targets);
    $metaDescription = parseSeoTargets($cDescription, $_values, $_targets);
    $metaKeywords = trim(parseSeoTargets($cKeywords, $_values, $_targets),',');
    $metaKeywords = str_replace(',','，',trim($metaKeywords,'，'));
    //如果关键词为空，用标题替代
    if(empty($metaKeywords))$metaKeywords = $webPageTitle;
    return array($webPageTitle, $metaKeywords, $metaDescription);
}

/**
 * @param string $content
 * @param array $_replace
 * @param array $_targets
 * @return string
 */
function parseSeoTargets($content, $_values, $_targets) {
    $content = str_replace($_targets, $_values, $content);
    $content = trim(preg_replace(array('((\s*\,\s*)+)', '((\s*\|\s*)+)', '((\s*\t\s*)+)'), array(
        ',', '|', '', ''), $content), ' -,|');
    return $content;
}

//获取目录（含子目录）下所有文件
function get_allfiles($path,&$files) {
    if(is_dir($path)){
        $dp = dir($path);
        while ($file = $dp ->read()){
            if($file !="." && $file !=".."){
                get_allfiles($path."/".$file, $files);
            }
        }
        $dp ->close();
    }
    if(is_file($path)){
        $files[] = $path;
    }
}

function get_filenamesbydir($dir){
    $files = array();
    get_allfiles($dir,$files);
    return $files;
}


?>