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<?php

/** * 根据中文裁减字符串 * @param $string - 字符串 * @param $length - 长度 * @param $doc - 缩略后缀 * @return 返回带省略号被裁减好的字符串 */ function cutstr($string, $length, $dot = ' ...') {         global $charset;

        if(strlen($string) <= $length) {

                return $string;         }

        $string = str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $string);

        $strcut = '';

        if(strtolower($charset) == 'utf-8') {

                $n = $tn = $noc = 0;

                while($n < strlen($string)) {

                        $t = ord($string[$n]);

                        if($t == 9 || $t == 10 || (32 <= $t && $t <= 126)) {                                 $tn = 1; $n++; $noc++;                         } elseif(194 <= $t && $t <= 223) {                                 $tn = 2; $n += 2; $noc += 2;                         } elseif(224 <= $t && $t < 239) {                                 $tn = 3; $n += 3; $noc += 2;                         } elseif(240 <= $t && $t <= 247) {                                 $tn = 4; $n += 4; $noc += 2;                         } elseif(248 <= $t && $t <= 251) {                                 $tn = 5; $n += 5; $noc += 2;                         } elseif($t == 252 || $t == 253) {                                 $tn = 6; $n += 6; $noc += 2;                         } else {                                 $n++;                         }

                        if($noc >= $length) {

                                break;                         }

                }

                if($noc > $length) {                         $n -= $tn;                 }

                $strcut = substr($string, 0, $n);

        } else {

                for($i = 0; $i < $length; $i++) {                         $strcut .= ord($string[$i]) > 127 ? $string[$i].$string[++$i] : $string[$i];                 }         }

        $strcut = str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $strcut);

        return $strcut.$dot;

}

/**

* 处理转义字符 * @param $string -字符串 * @param $force - 是否强制 * @return 返回整理好的字符串 */ function daddslashes($string, $force = 0) {         !defined('MAGIC_QUOTES_GPC') && define('MAGIC_QUOTES_GPC', get_magic_quotes_gpc());         if(!MAGIC_QUOTES_GPC || $force) {                 if(is_array($string)) {                         foreach($string as $key => $val) {                                 $string[$key] = daddslashes($val, $force);                         }                 } else {                         $string = addslashes($string);                 }         }         return $string; }

/**

* 检测日期的有效性 */ function datecheck($ymd, $sep='-') {         if(!empty($ymd)) {                 list($year, $month, $day) = explode($sep, $ymd);                 return checkdate($month, $day, $year);         } else {                 return FALSE;         } }

/**

* 调试信息 */ function debuginfo() {         if($GLOBALS['debug']) {                 global $db, $discuz_starttime, $debuginfo;                 $mtime = explode(' ', microtime());                 $debuginfo = array('time' => number_format(($mtime[1] + $mtime[0] - $discuz_starttime), 6), 'queries' => $db->querynum);                 return TRUE;         } else {                 return FALSE;         } }

/**

* 退出系统 */ function dexit($message = '') {         echo $message;         output();         exit(); }

function dfopen($url, $limit = 0, $post = '', $cookie = '', $bysocket = FALSE, $ip = '', $timeout = 15, $block = TRUE) {

        $return = '';         $matches = parse_url($url);         $host = $matches['host'];         $path = $matches['path'] ? $matches['path'].'?'.$matches['query'].'#'.$matches['fragment'] : '/';         $port = !empty($matches['port']) ? $matches['port'] : 80;

        if($post) {

                $out = "POST $path HTTP/1.0\r\n";                 $out .= "Accept: */*\r\n";                 //$out .= "Referer: $boardurl\r\n";                 $out .= "Accept-Language: zh-cn\r\n";                 $out .= "Content-Type: application/x-www-form-urlencoded\r\n";                 $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";                 $out .= "Host: $host\r\n";                 $out .= 'Content-Length: '.strlen($post)."\r\n";                 $out .= "Connection: Close\r\n";                 $out .= "Cache-Control: no-cache\r\n";                 $out .= "Cookie: $cookie\r\n\r\n";                 $out .= $post;         } else {                 $out = "GET $path HTTP/1.0\r\n";                 $out .= "Accept: */*\r\n";                 //$out .= "Referer: $boardurl\r\n";                 $out .= "Accept-Language: zh-cn\r\n";                 $out .= "User-Agent: $_SERVER[HTTP_USER_AGENT]\r\n";                 $out .= "Host: $host\r\n";                 $out .= "Connection: Close\r\n";                 $out .= "Cookie: $cookie\r\n\r\n";         }         $fp = @fsockopen(($ip ? $ip : $host), $port, $errno, $errstr, $timeout);         if(!$fp) {                 return '';//note $errstr : $errno \r\n         } else {                 stream_set_blocking($fp, $block);                 stream_set_timeout($fp, $timeout);                 @fwrite($fp, $out);                 $status = stream_get_meta_data($fp);                 if(!$status['timed_out']) {                         while (!feof($fp)) {                                 if(($header = @fgets($fp)) && ($header == "\r\n" ||  $header == "\n")) {                                         break;                                 }                         }

                        $stop = false;

                        while(!feof($fp) && !$stop) {                                 $data = fread($fp, ($limit == 0 || $limit > 8192 ? 8192 : $limit));                                 $return .= $data;                                 if($limit) {                                         $limit -= strlen($data);                                         $stop = $limit <= 0;                                 }                         }                 }                 @fclose($fp);                 return $return;         } }

/**

* HTML转义字符 * @param $string - 字符串 * @return 返回转义好的字符串 */ function dhtmlspecialchars($string) {         if(is_array($string)) {                 foreach($string as $key => $val) {                         $string[$key] = dhtmlspecialchars($val);                 }         } else {                 $string = preg_replace('/&((#(\d{3,5}|x[a-fA-F0-9]{4})|[a-zA-Z][a-z0-9]{2,5});)/', '&\\1',                 str_replace(array('&', '"', '<', '>'), array('&', '"', '<', '>'), $string));         }         return $string; }

function dheader($string, $replace = true, $http_response_code = 0) {

        $string = str_replace(array("\r", "\n"), array('', ''), $string);         if(empty($http_response_code) || PHP_VERSION < '4.3' ) {                 @header($string, $replace);         } else {                 @header($string, $replace, $http_response_code);         }         if(preg_match('/^\s*location:/is', $string)) {                 exit();         } }

/**

* 上传文件的函数 * @param $file - 要上传的文件 * @return 返回带省略号被裁减好的字符串 */ function disuploadedfile($file) {         return function_exists('is_uploaded_file') && (is_uploaded_file($file) || is_uploaded_file(str_replace('\\\\', '\\', $file))); } ?>

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