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既然选择了PHP,就要坚持学下去!大家有没有问自己为什么会选择学习PHP呢?就我个人而言,完全是因为兴趣,因为我的专业和计算机完全无关,但是就是对编程很赶兴趣,尤其对网络编程、web开发特别赶兴趣。阅读器 一个阅读器反省类
<?php
//原作者:epsilon7
//SonyMusic(sonymusic@163.net)
class BrowserDetector {
var $UA = ""; //$HTTP_USER_AGENT的内容
var $BROWSER= "Unknown"; //阅读器类型
var $PLATFORM = "Unknown"; //操作体系
var $VERSION= ""; //阅读器版本号
var $MAJORVER = ""; //阅读器主版本号
var $MINORVER = ""; //阅读器副版本号
/* 机关函数入手下手 */
function BrowserDetector(){
$this->UA = getenv(HTTP_USER_AGENT);
$preparens = "";
$parens = "";
$i = strpos($this->UA,"(");
if ($i >= 0) {
$preparens = trim(substr($this->UA,0,$i));
$parens = substr($this->UA,$i+1,strlen($this->UA));
$j = strpos($parens,")");
if($j>=0) {
$parens = substr($parens,0,$j);
}
}
else {
$preparens = $this->UA;
}
$browVer = $preparens;
$token = trim(strtok($parens,";"));
while($token) {
if($token=="compatible") {
}
elseif(preg_match("/MSIE/i","$token")) {
$browVer = $token;
}
elseif(preg_match("/Opera/i","$token")) {
$browVer = $token;
}
elseif(preg_match("/X11/i","$token") || preg_match("/SunOS/i","$token") || preg_match ("/Linux/i","$token")) {
$this->PLATFORM = "Unix";
}
elseif(preg_match("/Win/i","$token")) {
$this->PLATFORM = $token;
}
elseif(preg_match("/Mac/i","$token") || preg_match("/PPC/i","$token")) {
$this->PLATFORM = $token;
}
$token = strtok(";");
}
$msieIndex = strpos($browVer,"MSIE");
if($msieIndex >= 0) {
$browVer = substr($browVer,$msieIndex,strlen($browVer));
}
$leftover = "";
if(substr($browVer,0,strlen("Mozilla")) == "Mozilla") {
$this->BROWSER = "Netscape";
$leftover=substr($browVer,strlen("Mozilla")+1,strlen($browVer));
}
elseif(substr($browVer,0,strlen("Lynx")) == "Lynx") {
$this->BROWSER = "Lynx";
$leftover=substr($browVer,strlen("Lynx")+1,strlen($browVer));
}
elseif(substr($browVer,0,strlen("MSIE")) == "MSIE") {
$this->BROWSER = "IE";
$leftover=substr($browVer,strlen("MSIE")+1,strlen($browVer));
}
elseif(substr($browVer,0,strlen("Microsoft Internet Explorer")) == "Microsoft Internet Explorer") {
$this->BROWSER = "IE";
$leftover=substr($browVer,strlen("Microsoft Internet Explorer")+1,strlen($browVer));
}
elseif(substr($browVer,0,strlen("Opera")) == "Opera") {
$this->BROWSER = "Opera";
$leftover=substr($browVer,strlen("Opera")+1,strlen($browVer));
}
$leftover = trim($leftover);
$i=strpos($leftover," ");
if($i > 0) {
$this->VERSION = substr($leftover,0,$i);
}
else {
$this->VERSION = $leftover;
}
$j = strpos($this->VERSION,".");
if($j >= 0) {
$this->MAJORVER = substr($this->VERSION,0,$j);
$this->MINORVER = substr($this->VERSION,$j+1,strlen($this->VERSION));
}
else {
$this->MAJORVER = $this->VERSION;
}
}
}
//测试法式入手下手
$test=new browserdetector;
echo $test->UA."<br>";
echo $test->BROWSER."<br>";
echo $test->PLATFORM."<br>";
echo $test->VERSION."<br>";
echo $test->MAJORVER."<br>";
echo $test->MINORVER."<br>";
?> 告诉你了一个方式,但是缺少努力这一环节,那也是白搭。 |
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