global.php

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<?php
//define("__ERROR_LOGFILE", 'debug/internalError.txt');

/*
 * 内部错误记录
 * 参数: $msg 记录信息内容
 */
function internalError($msg = '') {
	if(defined("__DEBUG")) { // 只有在开启了调试模式的情况下记录错误信息
		if($msg) {
			$fp = fopen(__ERROR_LOGFILE, 'a');
			$data = date("Y-m-d H:i:s").
					"\n-----------------------------------------\n".
					$msg.
					"\n-----------------------------------------\n\n";
			fputs($fp, $data);
			fclose($fp);
		}
	}
	exit();
}

function utime() {
	list($sec, $usec) = explode(' ', microtime());
	return $sec + $usec;
}

/*
 * 设定 Cookie
 * 参数: $name Cookie 名称
         $var  Cookie 内容
         $expire 作用时长
         $secure 在安全域中使用时设置为1
 */
function Cookie($name, $var, $expires = 0, $secure = 0) {
	GLOBAL $timestamp;
	$cookie_time = $expires ? ($timestamp + $expires) : 0;
	SetCookie($name, $var, $cookie_time, COOKIE_PATH, COOKIE_DOMAIN, $secure);
}

function checkAttribute($name, $value) {
	/*
	$allowedAttributes = Array("username"			=> '^[a-zA-Z]([0-9a-zA-Z_-])*$',
								"email"				=> '^[a-z0-9]+[a-z0-9_\\.-]*@([a-z0-9]+([\.-][a-z0-9]+)*)\\.[a-z]{2,4}$',
								"common"			=> '^[A-Za-z 0-9-_]+$',
								"password"			=> '^([A-Za-z0-9_@!??\\.-]){6,}$',
								"mobilnr"			=> '^[0-9-]{8,}$',
								"float"				=> '^[0-9]*\.*[0-9]*$',
								"numbers"			=> '^[0-9]+$',
								"signednumbers"		=> '^[0-9-]+$',
								"url"				=> '^[A-Za-z0-9._~/:?&=+-]+$',
								"digits+letters"	=> '^[A-Za-z0-9]+$'
	);
	*/
	$allowedAttributes = Array(
							'username'	        => '^([0-9a-zA-Z_-])*$',
							'common'			=> '^[0-9a-zA-Z_'.chr(0xa1).'-'.chr(0xff).'-]+$',
							'email'				=> '^[a-z0-9]+[a-z0-9_\\.-]*@([a-z0-9]+([\.-][a-z0-9]+)*)\\.[a-z]{2,4}$',
							'password'			=> '^([A-Za-z0-9_@!??\\.-]){3,}$',
							'float'				=> '^[0-9]*\.*[0-9]*$',
							'mobilnr'			=> '^[0-9-]{8,}$',
							'numbers'			=> '^[0-9]+$',
							'url'				=> '^[A-Za-z0-9._~/:?&=+-]+$',
							'alnum'				=> '^[a-zA-Z0-9]+$',
							'ip'				=> '^[0-9\.]+$',
							'letter'			=> '^[A-Za-z]+$',
							'number+'			=> '^[0-9-]+$'
	);
	$regexp = '~'.str_replace("~", "\\~", $allowedAttributes[$name]).'~';
	if(preg_match($regexp, $value) != 0)
		return true;
	else
		return false;
}

/*
 * 获取页面传递的变量
 * 参数: $name 需要获取的变量名
         $format 过滤方法
         $method 获取方法,默认为 GET 方式
 */
function getParameter($name, $format, $method = PP_GET) {
	switch($method) {
		case PP_GET:
			$var = $_GET[$name];
			break;
		case PP_POST:
			$var = $_POST[$name];
			break;
		case PP_GET_POST:
			$var = isset($_GET[$name]) ? $_GET[$name] : $_POST[$name];
			break;
		default:
			internalError("getPageParameter(): Invalid parameter method: $method");
			break;
	}

	if(isset($var)) {
		if($format) {
			if(!checkAttribute($format, $var))
				$var = false;
		}
	}

	if($var == "")
		unset($var);

	return $var;
}

/*
function is_ip($ip) {
	return eregi("^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$", $ip);
}
*/
function convert_ip_tonumber($ip) {
	if(!checkAttribute('ip', $ip)) return false;
	$ip_array = explode(".", $ip);
	$base = 256;
	$ip_number  = $ip_array[0] * pow($base, 3);
	$ip_number += $ip_array[1] * pow($base, 2);
	$ip_number += $ip_array[2] * pow($base, 1);
	$ip_number += $ip_array[3] * pow($base, 0);
	return $ip_number;
}

/*
 * 网络切换函数,默认返回 telecom 电信的频道信息数组
 * 参数: $channel 网络名称
 */
function change_channel($channel = 'telecom') {
	switch($channel) {
		case 'netcom':
		case 'cnc':
			return array('CabUrl'		=>	'http://222.240.213.60/update/Chaos.cab',
						'ClientUrl'		=>	'http://222.240.213.60/update/XTVsetup.exe',
						'Gate'			=>	'cnc'
					);
			break;
		case 'edu':
			return array('CabUrl'		=>	'http://166.111.118.5/update/Chaos.cab',
						'ClientUrl'		=>	'http://166.111.118.5/update/XTVsetup.exe',
						'Gate'			=>	'edu'
					);
			break;
		case 'telecom':
		case 'tel':
			return array('CabUrl'		=>	'http://58.20.33.3/update/Chaos.cab',
						'ClientUrl'		=>	'http://58.20.33.3/update/XTVsetup.exe',
						'Gate'			=>	'tel'
					);
			break;
		default:
			ipunknown($onlineip);
			return array('CabUrl'		=>	'http://58.20.33.3/update/Chaos.cab',
						'ClientUrl'		=>	'http://58.20.33.3/update/XTVsetup.exe',
						'Gate'			=>	'tel'
					);
			break;
	}
}

/*
 * 通过用户来访IP,切换网络,返回相关信息的数组
 */
function ip_table() {
	global $onlineip;
	$ipnum = convert_ip_tonumber($onlineip);
	if(!$ipnum) internalError("ip_table(): Remote IP check failed:".$onlineip);
	$sql = "SELECT ip_comefrom FROM ip_table WHERE ip_start <= '$ipnum' AND ip_end >= '$ipnum'";
	list($net) = db_fetch_row(db_query($sql));
	return change_channel($net);
}

/*
 * 中文字符串截取
 * 参数: $string 传入的字符串
         $sublen 需要截取的长度
 */
function cnSubStr($string, $sublen) {
	if($sublen >= strlen($string))
		return $string;

	$s = "";
	for($i = 0; $i < $sublen; $i ++) {
		if(ord($string{$i}) > 127) {
			$s .= $string{$i} . $string{++$i};
			continue;
		} else {
			$s .= $string{$i};
			continue;
		}
	}
	return $s;
}

function obj_check($filename, $expire = 300) {
	GLOBAL $timestamp;
	if(!file_exists($filename))
		return false;
	if($timestamp - filemtime($filename) > $expire)
		return false;
	else
		return true;
}
		
function obj_put($filename, $str) {
	@touch($filename.'.new');
	$fp = @fopen($filename.'.new', 'w');
	@fwrite($fp, $str);
	@fclose($fp);
	@unlink($filename);
	@rename($filename.'.new', $filename);
	@chmod($filename, 0777);
}

function obj_get($filename) {
	if(!file_exists($filename))
		return false;
	$fp = @fopen($filename, 'r');
	$contents = @fread($fp, filesize($filename));
	@fclose($fp);
	return $contents;
}

function checkdir($dirname) {
	if(is_dir($dirname)) {
		return true;
	} else {
		if(!@mkdir($dirname, 0777)) {
			@chmod($dirname,0777);
		}
	}
	return true;
}
function ipunknown($onlineip){
	$handle = fopen("Debug/ip_new.txt","a");
	if($handle){
		fwrite($handle, $onlineip."\n");
	}
	fclose($handle);
}
function listFiles($dir, $suffix){
	$fileList = array();
	
	if ($handle = opendir($dir)) {
	   while (false !== ($file = readdir($handle))) {
	       if ($file != "." && $file != ".." && stristr($file, $suffix)!=false ) {
	           $fileList[]=$file;
	       }
	   }
	   closedir($handle);
	}
	return $fileList;
}
?>