PHP中的一些经验积累
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1、关于PHP重定向
代码片段
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
代码片段
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
代码片段
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
代码片段
$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
代码片段
<?
header("Content-type:application/vnd.ms-excel");
header("Content-Disposition:filename=test.xls");
echo "test1t";
echo "test2tn";
echo "test1t";
echo "test2tn";
echo "test1t";
echo "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
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：
代码片段
//$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：
代码片段
$newTag=$db->rows[$i][date]>=date("Y-m-d
00:00:00")?"<img
src='../image/newinfor.gif'>":"";
增加一些....下面的俺也不知道是哪转的了...反正没有版权...大家用就是了..嘿嘿
//提取页面和浏览器提交的变量，作用相当于使PHP.INI开了全局变量
代码片段
@extract($_SERVER,
EXTR_SKIP);
@extract($_SESSION,
EXTR_SKIP);
@extract($_POST, EXTR_SKIP);
@extract($_FILES,
EXTR_SKIP);
@extract($_GET, EXTR_SKIP);
@extract($_ENV, EXTR_SKIP);
//得到ip地址
代码片段
$ip=$_SERVER['REMOTE_ADDR'];
$ip1 =
getenv('HTTP_X_FORWARDED_FOR');
if (($ip1 != "") && ($ip1 !=
"unknown")) $ip=$ip1;
//读取文件函数
代码片段
function
readfromfile($file_name)
{
if (file_exists($file_name))
{
$filenum=fopen($file_name,"r");
flock($filenum,LOCK_EX);
$file_data=fread($filenum,
filesize($file_name));
rewind($filenum);
fclose($filenum);
return $file_data;
}
}
//写入文件函数
代码片段
function
writetofile($file_name,$data,$method="w")
{
$filenum=fopen($file_name,$method);
flock($filenum,LOCK_EX);
$file_data=fwrite($filenum,$data);
fclose($filenum);
return $file_data;
}
//页面快速转向
代码片段
function
turntopage($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";
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";
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">$info</td>n";
print " </tr>n";
print " <tr>n";
print " <td
align="center">n";
print " <a href="$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 "
</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;
}
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作者：佚名 |
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标签：PHP |
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出处：智新科技 作者：网站建设
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