1、关于PHP重定向
方法一：header(\"Location: index.php\";
方法二：echo \" \";
方法三：echo \"\";
2、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; $i++)
{
if (strpos($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\";
$browser = \"Netscape Navigator\";
}
if (ereg(\"Mozilla\",$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))
{
$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
3、获取访问者操作系统
function osinfo() {
$os=\"\";
$Agent = $GLOBALS[\"HTTP_USER_AGENT\"];
if (eregi('win',$Agent) && strpos($Agent, '95')) {
$os=\"Windows 95\";
}
elseif (eregi('win 9x',$Agent) && strpos($Agent, '4.90')) {
$os=\"Windows ME\";
}
elseif (eregi('win',$Agent) && ereg('98',$Agent)) {
$os=\"Windows 98\";
}
elseif (eregi('win',$Agent) && eregi('nt 5\.0',$Agent)) {
$os=\"Windows 2000\";
}
elseif (eregi('win',$Agent) && eregi('nt',$Agent)) {
$os=\"Windows NT\";
}
elseif (eregi('win',$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)) {
$os=\"Unix\";
}
elseif (eregi('sun',$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)) {
$os=\"HPUX\";
}
elseif (eregi('NetBSD',$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)) {
$os=\"FreeBSD\";
}
if ($os=='') $os = \"Unknown\";
return $os;
}
//调用方法$os=os_infor() ;
4、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-javascript',
'pdf' => 'application/pdf',
'ps' => 'application/postscript',
'eps' => 'application/postscript',
'ai' => 'application/postscript',
'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',
'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',
'ltx' => 'application/x-latex',
'tcl' => 'application/x-tcl',
'pgp' => 'application/pgp',
'asc' => 'application/pgp',
'exe' => 'application/x-msdownload',
'doc' => 'application/msword',
'rtf' => 'application/rtf',
'xls' => 'application/vnd.ms-excel',
'ppt' => 'application/vnd.ms-powerpoint',
'mdb' => 'application/x-msaccess',
'wri' => 'application/x-mswrite',
);
5、php生成excel文档
header(\"Content-type:application/vnd.ms-excel\";
header(\"Content-Disposition:filename=test.xls\";
echo \"test1\t\";
echo \"test2\t\n\";
echo \"test1\t\";
echo \"test2\t\n\";
echo \"test1\t\";
echo \"test2\t\n\";
echo \"test1\t\";
echo \"test2\t\n\";
echo \"test1\t\";
echo \"test2\t\n\";
echo \"test1\t\";
echo \"test2\t\n\";
?>
//改动相应文件头就可以输出.doc .xls等文件格式了
6、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?\"
\":\"\";