<?php function DateAdd($date, $int, $unit = "d") { //时间的增加（还可以改进成时分秒都可以增加，有时间再补上）
$dateArr = explode("-", $date);
$value[$unit] = $int; //OSPHP.COm.CN
return date("Y-m-d", mktime(0,0,0, $dateArr[1] + $value['m'], $dateArr[2] + $value['d'], $dateArr[0] + $value['y'])); //OSPHP.COm.CN
}
function GetWeekDay($date) {//计算出给出的日期是星期几
$dateArr = explode("-", $date);
return date("w", mktime(0,0,0,$dateArr[1],$dateArr[2],$dateArr[0])); } ?> <? function GetIP() { //获取IP
if ($_SERVER["HTTP_X_FORWARDED_FOR"])
$ip = $_SERVER["HTTP_X_FORWARDED_FOR"];
else if ($_SERVER["HTTP_CLIENT_IP"])
$ip = $_SERVER["HTTP_CLIENT_IP"];
else if ($_SERVER["REMOTE_ADDR"])
$ip = $_SERVER["REMOTE_ADDR"]; getenv("HTTP_X_FORWARDED_FOR"))
$ip = getenv("HTTP_X_FORWARDED_FOR");
else if (getenv("HTTP_CLIENT_IP"))
$ip = getenv("HTTP_CLIENT_IP");
else if (getenv("REMOTE_ADDR"))
$ip = getenv("REMOTE_ADDR");
else
$ip = "Unknown";
return $ip;
} ?> <? function check_date($date) { //检查日期是否合法日期
$dateArr = explode("-", $date);
if (is_numeric($dateArr[0]) && is_numeric($dateArr[1]) && is_numeric($dateArr[2])) { checkdate($dateArr[1],$dateArr[2],$dateArr[0]);
}
return false;
}
function check_time($time) {//检查时间是否合法时间 //开源OSPhP.COM.CN
$timeArr = explode(":", $time);
if (is_numeric($timeArr[0]) && is_numeric($timeArr[1]) && is_numeric($timeArr[2])) { $timeArr[0] >= 0 && $timeArr[0] <= 23) && ($timeArr[1] >= 0 && $timeArr[1] <= 59) && ($timeArr[2] >= 0 && $timeArr[2] <= 59)) //开源OSPhP.COM.CN
return true;
else
return false;
}
return false;
}
function DateDiff($date1, $date2, $unit = "") { //时间比较函数，返回两个日期相差几秒、几分钟、几小时或几天 //开源代码OSPhP.COm.CN
switch ($unit) {
case 's':
$dividend = 1;
break;
case 'i':
$dividend = 60;
break;
case 'h':
$dividend = 3600;
break;
case 'd':
$dividend = 86400;
break; //oSPHP.COM.CN
default:
$dividend = 86400;
}
$time1 = strtotime($date1);
$time2 = strtotime($date2);
if ($time1 && $time2) $time1 - $time2) / $dividend;
return false;
} ?> PHP重定向 <?
方法一：header("Location: index.php"); 方法二：echo "<scrīpt>window.location ="$PHP_SELF";</scrīpt>"; //PHP开源代码 方法三：echo "<META HTTP-EQUIV="Refresh" CONTENT="0; URL=index.php">"; ?> 获取访问者浏览器 <? function browse_infor()
{ $browser="";$browserver=""; $Browsers =array("Lynx","MOSAIC","AOL","Opera","JAVA","MacWeb","WebExplorer","OmniWeb"); $Agent = $GLOBALS["HTTP_USER_AGENT"];
for ($i=0; $i<=7; $i++) //OsPHP.COM.CN
{
if (strpos($Agent,$Browsers[$i]))
{ $browser = $Browsers[$i]; $browserver ="";
}
}
if (ereg("Mozilla",$Agent) && !ereg("MSIE",$Agent))
{ $temp =explode("(", $Agent); $Part=$temp[0]; $temp =explode("/", $Part); $browserver=$temp[1]; $temp =explode(" ",$browserver); $browserver=$temp[0]; $browserver =preg_replace("/([d.]+)/","1",$browserver); $browserver = " $browserver"; //OSPHP.COM.Cn开源 $browser = "Netscape Navigator";
}
if (ereg("Mozilla",$Agent) && ereg("Opera",$Agent))
{ $temp =explode("(", $Agent); $Part=$temp[1]; $temp =explode(")", $Part); $browserver=$temp[1]; $temp =explode(" ",$browserver);$browserver=$temp[2];$browserver =preg_replace("/([d.]+)/","1",$browserver); $browserver = " $browserver"; $browser = "Opera";
}
if (ereg("Mozilla",$Agent) && ereg("MSIE",$Agent)) //OSPHP.COm.CN
{ $temp = explode("(", $Agent); $Part=$temp[1]; $temp = explode(";",$Part); $Part=$temp[1]; $temp = explode(" ",$Part);$browserver=$temp[2]; $browserver =preg_replace("/([d.]+)/","1",$browserver); $browserver = " $browserver"; $browser = "Internet Explorer";
}
if ($browser!="")
{ $browseinfo = "$browser$browserver";
}
else
{ $browseinfo = "Unknown";
}
return $browseinfo;
} //调用方法$browser=browseinfo() ;直接返回结果 ?> //oSPHP.COM获取访问者操作系统 <? function osinfo() { $os=""; $Agent = $GLOBALS["HTTP_USER_AGENT"];
if (eregi('win',$Agent) && strpos($Agent, '95')) { //PHP开源代码 $os="Windows 95";
}
elseif (eregi('win 9x',$Agent) && strpos($Agent, '4.90')) { $os="Windows ME";
}
elseif (eregi('win',$Agent) && ereg('98',$Agent)) { //OSPHP.COm.CN $os="Windows 98";
}
elseif (eregi('win',$Agent) && eregi('nt 5.0',$Agent)) { $os="Windows 2000";
}
elseif (eregi('win',$Agent) && eregi('nt',$Agent)) { //开源代码OSPHP.COM.Cn $os="Windows NT";
}
elseif (eregi('win',$Agent) && eregi('nt 5.1',$Agent)) { $os="Windows XP";
}
elseif (eregi('win',$Agent) && ereg('32',$Agent)) { $os="Windows 32";
}
elseif (eregi('linux',$Agent)) { $os="Linux";
}
elseif (eregi('unix',$Agent)) { $os="Unix"; eregi('sun',$Agent) && eregi('os',$Agent)) { $os="SunOS";
}
elseif (eregi('ibm',$Agent) && eregi('os',$Agent)) { $os="IBM OS/2";
}
elseif (eregi('Mac',$Agent) && eregi('PC',$Agent)) { $os="Macintosh";
}
elseif (eregi('PowerPC',$Agent)) {$os="PowerPC";
}
elseif (eregi('AIX',$Agent)) { $os="AIX";
}
elseif (eregi('HPUX',$Agent)) { $os="HPUX"; //PHP开源代码
}
elseif (eregi('NetBSD',$Agent)) { $os="NetBSD";
}
elseif (eregi('BSD',$Agent)) { $os="BSD";
}
elseif (ereg('OSF1',$Agent)) { $os="OSF1";
}
elseif (ereg('IRIX',$Agent)) { $os="IRIX";
}
elseif (eregi('FreeBSD',$Agent)) { $os="FreeBSD"; $os=='') $os = "Unknown";
return $os;
} //调用方法$os=os_infor() ; ?> 文件格式类 <?
$mime_types = array( 'gif' => 'image/gif','jpg' => 'image/jpeg', 'jpeg' => 'image/jpeg', 'jpe' => 'image/jpeg', 'bmp' => 'image/bmp', 'png' => 'image/png', 'tif' => 'image/tiff','tiff' => 'image/tiff', 'pict' => 'image/x-pict', 'pic' => 'image/x-pict', 'pct' => 'image/x-pict', 'tif' => 'image/tiff', 'tiff' => 'image/tiff', 'psd' => 'image/x-photoshop', 'swf' => 'application/x-shockwave-flash', 'js' => 'application/x-javascrīpt', 'pdf' => 'application/pdf', 'ps' => 'application/postscrīpt', 'eps' => 'application/postscrīpt', 'ai' => 'application/postscrīpt', 'wmf' => 'application/x-msmetafile', 'css' => 'text/css', 'htm' => 'text/html', 'html' => 'text/html', 'txt' => 'text/plain', 'xml' => 'text/xml', 'wml' => 'text/wml', 'wbmp' => 'image/vnd.wap.wbmp', 'mid' => 'audio/midi', 'wav' => 'audio/wav', 'mp3' => 'audio/mpeg', 'mp2' => 'audio/mpeg', 'avi' => 'video/x-msvideo', 'mpeg' => 'video/mpeg', 'mpg' => 'video/mpeg', 'qt' => 'video/quicktime', 'mov' => 'video/quicktime', //开源代码OSPHP.COM.Cn 'lha' => 'application/x-lha', 'lzh' => 'application/x-lha', 'z' => 'application/x-compress', 'gtar' => 'application/x-gtar', 'gz' => 'application/x-gzip', 'gzip' => 'application/x-gzip', 'tgz' => 'application/x-gzip', 'tar' => 'application/x-tar', 'bz2' => 'application/bzip2', 'zip' => 'application/zip', 'arj' => 'application/x-arj', 'rar' => 'application/x-rar-compressed','hqx' => 'application/mac-binhex40', 'sit' => 'application/x-stuffit', 'bin' => 'application/x-macbinary', 'uu' => 'text/x-uuencode', 'uue' => 'text/x-uuencode', 'latex'=> 'application/x-latex', //PHP开源代码 'ltx' => 'application/x-latex', 'tcl' => 'application/x-tcl', 'pgp' => 'application/pgp', 'asc' => 'application/pgp', 'exe' => 'application/x-msdownload', 'doc' => 'application/msword', //OSPHP.com.CN 'rtf' => 'application/rtf', 'xls' => 'application/vnd.ms-excel', 'ppt' => 'application/vnd.ms-powerpoint', 'mdb' => 'application/x-msaccess', 'wri' => 'application/x-mswrite',
); ?>
else if (
return
if ((
return (float)(
}
elseif (
}
if (
生成excel文档 <?
header("Content-type:application/vnd.ms-excel"); header("Content-Disposition:filename=test.xls");
echo "test1t";
echo "test2tn";
echo "test1t";
echo "test2tn";
echo "test1t"; "test2tn";
echo "test1t";
echo "test2tn";
echo "test1t";
echo "test2tn";
echo "test1t";
echo "test2tn"; //改动相应文件头就可以输出.doc .xls等文件格式了 ?> 时间比较问题
举一个简单例子说明:比如一个论坛对当天发表的贴子用new图片标记一下。
方法一： <? //$db->rows[$i][date]中为数据库中datetime字段值. $today=time(); $theDay=date("Y-m-d H:i:s",$today-24*3600); $newTag=$db->rows[$i][date]>=$theDay?"<img src='../image/newinfor.gif'>":"";
//方法二： $newTag=$db->rows[$i][date]>=date("Y-m-d 00:00:00")?"<img src='../image/newinfor.gif'>":""; ?> //提取页面和浏览器提交的变量，作用相当于使PHP.INI开了全局变量
<? @extract($_SERVER, EXTR_SKIP);
@extract($_SESSION, EXTR_SKIP);
@extract($_POST, EXTR_SKIP);
@extract($_FILES, EXTR_SKIP); //OSPHP.COm.CN
@extract($_GET, EXTR_SKIP);
@extract($_ENV, EXTR_SKIP); ?> //写入文件函数 <? function writetofile($file_name,$data,$method="w") { $filenum=fopen($file_name,$method);
flock($filenum,LOCK_EX); $file_data=fwrite($filenum,$data); fclose($filenum);
return $file_data;
} ?> //页面快速转向 <? function turntopage($url="index.php",$info = "页面转向中...",$second=2){
print "<html>n<head>n<title>页面转向中....</title>n";
print "<meta http-equiv="refresh" content="$second;url=$url">n";
print "<style type="text/css">n<!--n";
print "td { font-family: "Verdana", "Arial";font-size: 12px}n";
print "A {COLOR: #000000; TEXT-DECORATION: none}n";
print "-->n</style>n";
print "</head>n<body>n";
print "<table width="100%" border="0" align="center">n"; //PHP开源代码
print " <tr>n";
print " <td height="200"> </td>n";
print " </tr>n";
print " <tr>n";
print " <td align="center">n";
print " <table width="60%" border="0" cellpadding="8" bgcolor="#AA9FFF">n";
//PHP开源代码
print " <tr>n";
print " <td height="30" align="center">页面转向提示信息</td>n";
print " </tr>n";
print " <tr>n";
print " <td align="center">$info</td>n";
print " </tr>n";
print " <tr>n"; //开源OSPhP.COM.CN
print " <td align="center">n";
print " <a href="$url">如果你的浏览器不支持自动跳转,请按这里</a></td>n";
print " </tr>n";
print " </tr>n";
print " </table></td>n";
print " </tr>n";
print " <tr>n";
print " <td height="200"> </td>n";
print " </tr>n";
print "</table>n";
print "</body>n</html>";
exit; ?>
echo
