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经验积累，献给PHP爱好者！！！

类别: PHP教程

最近刚刚完成手中的项目，比较闲。来这儿转转，把积累的一些技巧分享给大家！
1、关于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、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?"<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\'>":"";
7、PHP中对数据库操作的封装
我的例子.........见上面附件！

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