幾個php技巧

 1、關於PHP重定向
方法一：header("Location: index.php");
方法二：echo "<script>window.location ="$PHP_SELF";</script>";
方法三：echo "<META HTTP-EQUIV="Refresh" CONTENT="0; URL=index.php">";

2、獲取訪問者浏覽器
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 $browseinfo;
}
//調用方法$browser=browseinfo() ;直接返回結果

3、獲取訪問者操作系統
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 $os;
}
//調用方法$os=os_infor() ;

4、文件格式類
$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文檔
<?
header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:filename=test.xls");
echo "test1 ";
echo "test2 ";
echo "test1 ";
echo "test2 ";
echo "test1 ";
echo "test2 ";
echo "test1 ";
echo "test2 ";
echo "test1 ";
echo "test2 ";
echo "test1 ";
echo "test2 ";
?>
//改動相應文件頭就可以輸出.doc .xls等文件格式了