Accumulated experience, dedicated to PHP enthusiasts!!! _php

Source: Internet
Author: User
Keywords enthusiast accumulation experience agent os eregi brow
Tags ereg gtar
Recently completed the hands of the project, relatively free. Come here and turn around and share some of the skills you have accumulated.
1. About PHP Redirection
Method One: Header ("Location:index.php");
Method Two: Echo "";
Method Three: Echo " ";

2. Get the visitor's browser
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;
}
Call Method $browser=browseinfo (); return results directly

3. Get the visitor's operating system
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 (' + ', $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;
}
Call Method $os=os_infor ();

4. File Format class
$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 generates Excel documents
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";
?>
Change the file header to output. doc. xls file formats
6. Time comparison problem
Give a simple example: for example, a forum on the day post is marked with a new image.
Method One:
The DateTime field value in the database $db->rows[$i][date].
$today =time ();
$theDay =date ("y-m-d h:i:s", $today -24*3600);
$newTag = $db->rows[$i][date]>= $theDay? ":" ";
Method Two:
$newTag = $db->rows[$i][date]>=date ("y-m-d 00:00:00")? "": "";
7. Encapsulation of database operations in PHP
My example ..... See attachment above!
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