常用类

// 过滤html代码

function SpHtml2Text($str)
{
	$str = preg_replace("/<sty(.*)\\/style>|<scr(.*)\\/script>|<!--(.*)-->/isU","",$str);
	$alltext = "";
	$start = 1;
	for($i=0;$i<strlen($str);$i++)
	{
		if($start==0 && $str[$i]==">")
		{
			$start = 1;
		}
		else if($start==1)
		{
			if($str[$i]=="<")
			{
				$start = 0;
				$alltext .= " ";
			}
			else if(ord($str[$i])>31)
			{
				$alltext .= $str[$i];
			}
		}
	}
	$alltext = str_replace("　"," ",$alltext);
	$alltext = preg_replace("/&([^;&]*)(;|&)/","",$alltext);
	$alltext = preg_replace("/[ ]+/s"," ",$alltext);
	return $alltext;
}

//获得当前的脚本网址
function GetCurUrl()
{
	if(!empty($_SERVER["REQUEST_URI"]))
	{
		$scriptName = $_SERVER["REQUEST_URI"];
		$nowurl = $scriptName;
	}
	else
	{
		$scriptName = $_SERVER["PHP_SELF"];
		if(empty($_SERVER["QUERY_STRING"]))
		{
			$nowurl = $scriptName;
		}
		else
		{
			$nowurl = $scriptName."?".$_SERVER["QUERY_STRING"];
		}
	}
	return $nowurl;
}
//文本转HTML
function Text2Html($txt)
{
	$txt = str_replace("  ","　",$txt);
	$txt = str_replace("<","&lt;",$txt);
	$txt = str_replace(">","&gt;",$txt);
	$txt = preg_replace("/[\r\n]{1,}/isU","<br/>\r\n",$txt);
	return $txt;
}
//中文截取2，单字节截取模式
//如果是request的内容，必须使用这个函数
function cn_substrR($str,$slen,$startdd=0)
{
	$str = cn_substr(stripslashes($str),$slen,$startdd);
	return addslashes($str);
}

//中文截取2，单字节截取模式
function cn_substr($str,$slen,$startdd=0)
{
	global $cfg_soft_lang;
	if($cfg_soft_lang=='utf-8')
	{
		return cn_substr_utf8($str,$slen,$startdd);
	}
	$restr = '';
	$c = '';
	$str_len = strlen($str);
	if($str_len < $startdd+1)
	{
		return '';
	}
	if($str_len < $startdd + $slen || $slen==0)
	{
		$slen = $str_len - $startdd;
	}
	$enddd = $startdd + $slen - 1;
	for($i=0;$i<$str_len;$i++)
	{
		if($startdd==0)
		{
			$restr .= $c;
		}
		else if($i > $startdd)
		{
			$restr .= $c;
		}

		if(ord($str[$i])>0x80)
		{
			if($str_len>$i+1)
			{
				$c = $str[$i].$str[$i+1];
			}
			$i++;
		}
		else
		{
			$c = $str[$i];
		}

		if($i >= $enddd)
		{
			if(strlen($restr)+strlen($c)>$slen)
			{
				break;
			}
			else
			{
				$restr .= $c;
				break;
			}
		}
	}
	return $restr;
}
//utf-8中文截取，单字节截取模式
function cn_substr_utf8($str, $length, $start=0)
{
	if(strlen($str) < $start+1)
	{
		return '';
	}
	preg_match_all("/./su", $str, $ar);
	$str = '';
	$tstr = '';

	//为了兼容mysql4.1以下版本,与数据库varchar一致,这里使用按字节截取
	for($i=0; isset($ar[0][$i]); $i++)
	{
		if(strlen($tstr) < $start)
		{
			$tstr .= $ar[0][$i];
		}
		else
		{
			if(strlen($str) < $length + strlen($ar[0][$i]) )
			{
				$str .= $ar[0][$i];
			}
			else
			{
				break;
			}
		}
	}
	return $str;
}

function GetMkTime($dtime)
{
	global $cfg_cli_time;
	if(!ereg("[^0-9]",$dtime))
	{
		return $dtime;
	}
	$dtime = trim($dtime);
	$dt = Array(1970,1,1,0,0,0);
	$dtime = ereg_replace("[\r\n\t]|日|秒"," ",$dtime);
	$dtime = str_replace("年","-",$dtime);
	$dtime = str_replace("月","-",$dtime);
	$dtime = str_replace("时",":",$dtime);
	$dtime = str_replace("分",":",$dtime);
	$dtime = trim(ereg_replace("[ ]{1,}"," ",$dtime));
	$ds = explode(" ",$dtime);
	$ymd = explode("-",$ds[0]);
	if(!isset($ymd[1]))
	{
		$ymd = explode(".",$ds[0]);
	}
	if(isset($ymd[0]))
	{
		$dt[0] = $ymd[0];
	}
	if(isset($ymd[1]))
	{
		$dt[1] = $ymd[1];
	}
	if(isset($ymd[2]))
	{
		$dt[2] = $ymd[2];
	}
	if(strlen($dt[0])==2)
	{
		$dt[0] = '20'.$dt[0];
	}
	if(isset($ds[1]))
	{
		$hms = explode(":",$ds[1]);
		if(isset($hms[0]))
		{
			$dt[3] = $hms[0];
		}
		if(isset($hms[1]))
		{
			$dt[4] = $hms[1];
		}
		if(isset($hms[2]))
		{
			$dt[5] = $hms[2];
		}
	}
	foreach($dt as $k=>$v)
	{
		$v = ereg_replace("^0{1,}",'',trim($v));
		if($v=='')
		{
			$dt[$k] = 0;
		}
	}
	$mt = @gmmktime($dt[3],$dt[4],$dt[5],$dt[1],$dt[2],$dt[0]) - 3600 * $cfg_cli_time;
	if(!empty($mt))
	{
		return $mt;
	}
	else
	{
		return time();
	}
}

function SubDay($ntime,$ctime)
{
	$dayst = 3600 * 24;
	$cday = ceil(($ntime-$ctime)/$dayst);
	return $cday;
}

function AddDay($ntime,$aday)
{
	$dayst = 3600 * 24;
	$oktime = $ntime + ($aday * $dayst);
	return $oktime;
}

function GetDateTimeMk($mktime)
{
	return MyDate('Y-m-d H:i:s',$mktime);
}

function GetDateMk($mktime)
{
	return MyDate("Y-m-d",$mktime);
}

function GetIP()
{
	if(!empty($_SERVER["HTTP_CLIENT_IP"]))
	{
		$cip = $_SERVER["HTTP_CLIENT_IP"];
	}
	else if(!empty($_SERVER["HTTP_X_FORWARDED_FOR"]))
	{
		$cip = $_SERVER["HTTP_X_FORWARDED_FOR"];
	}
	else if(!empty($_SERVER["REMOTE_ADDR"]))
	{
		$cip = $_SERVER["REMOTE_ADDR"];
	}
	else
	{
		$cip = '';
	}
	preg_match("/[\d\.]{7,15}/", $cip, $cips);
	$cip = isset($cips[0]) ? $cips[0] : 'unknown';
	unset($cips);
	return $cip;
}

function pinyin($str,$ishead=0,$isclose=1)
{
	global $pinyins;
	$restr = '';
	$str = trim($str);
	$slen = strlen($str);
	if($slen<2)
	{
		return $str;
	}
	if(count($pinyins)==0)
	{
		$fp = fopen('pinyin.dat','r');
		while(!feof($fp))
		{
			$line = trim(fgets($fp));
			$pinyins[$line[0].$line[1]] = substr($line,3,strlen($line)-3);
		}
		fclose($fp);
	}
	for($i=0;$i<$slen;$i++)
	{
		if(ord($str[$i])>0x80)
		{
			$c = $str[$i].$str[$i+1];
			$i++;
			if(isset($pinyins[$c]))
			{
				if($ishead==0)
				{
					$restr .= $pinyins[$c];
				}
				else
				{
					$restr .= $pinyins[$c][0];
				}
			}else
			{
				$restr .= "_";
			}
		}else if( eregi("[a-z0-9]",$str[$i]) )
		{
			$restr .= $str[$i];
		}
		else
		{
			$restr .= "_";
		}
	}
	if($isclose==0)
	{
		unset($pinyins);
	}
	return $restr;
}

 

// $rptype = 0 表示仅替换 html标记
// $rptype = 1 表示替换 html标记同时去除连续空白字符
// $rptype = 2 表示替换 html标记同时去除所有空白字符
// $rptype = -1 表示仅替换 html危险的标记
function HtmlReplace($str,$rptype=0)
{
	$str = stripslashes($str);
	if($rptype==0)
	{
		$str = htmlspecialchars($str);
	}
	else if($rptype==1)
	{
		$str = htmlspecialchars($str);
		$str = str_replace("　",' ',$str);
		$str = ereg_replace("[\r\n\t ]{1,}",' ',$str);
	}
	else if($rptype==2)
	{
		$str = htmlspecialchars($str);
		$str = str_replace("　",'',$str);
		$str = ereg_replace("[\r\n\t ]",'',$str);
	}
	else
	{
		$str = ereg_replace("[\r\n\t ]{1,}",' ',$str);
		$str = eregi_replace('script','ｓｃｒｉｐｔ',$str);
		$str = eregi_replace("<[/]{0,1}(link|meta|ifr|fra)[^>]*>",'',$str);
	}
	return addslashes($str);
}

function CheckEmail($email)  //返回1时，验证成功
{
	return eregi("^[0-9a-z][a-z0-9\._-]{1,}@[a-z0-9-]{1,}[a-z0-9]\.[a-z\.]{1,}[a-z]$", $email);
}