我有一种感觉,因为安装的PHP版本存在差异。未正确执行代码的服务器正在运行PHP版本4.3.9。
以下是不起作用的代码部分。
// Function to find browser name
function getBrowser() {
$u_agent = $_SERVER['HTTP_USER_AGENT'];
$bname = 'Unknown';
$platform = 'Unknown';
$version= "";
//First get the platform?
if (preg_match('/linux/i', $u_agent)) {
$platform = 'Linux';
}
elseif (preg_match('/macintosh|mac os x/i', $u_agent)) {
$platform = 'Mac';
}
elseif (preg_match('/windows|win32/i', $u_agent)) {
$platform = 'Windows';
}
// Next get the name of the useragent yes seperately and for good reason
if(preg_match('/MSIE/i',$u_agent) && !preg_match('/Opera/i',$u_agent))
{
$bname = 'Internet Explorer';
$ub = "MSIE";
}
elseif(preg_match('/Firefox/i',$u_agent))
{
$bname = 'Mozilla Firefox';
$ub = "Firefox";
}
elseif(preg_match('/Chrome/i',$u_agent))
{
$bname = 'Google Chrome';
$ub = "Chrome";
}
elseif(preg_match('/Safari/i',$u_agent))
{
$bname = 'Apple Safari';
$ub = "Safari";
}
elseif(preg_match('/Opera/i',$u_agent))
{
$bname = 'Opera';
$ub = "Opera";
}
elseif(preg_match('/Netscape/i',$u_agent))
{
$bname = 'Netscape';
$ub = "Netscape";
}
elseif(preg_match('/Android/i',$u_agent))
{
$bname = 'Android';
$ub = "Android";
}
elseif(preg_match('/iPad/i',$u_agent))
{
$bname = 'iPad';
$ub = "iPad";
}
elseif(preg_match('/iPhone/i',$u_agent))
{
$bname = 'iPhone';
$ub = "iPhone";
}
elseif(preg_match('/BlackBerry/i',$u_agent))
{
$bname = 'BlackBerry';
$ub = "BlackBerry";
}
// finally get the correct version number
$known = array('Version', $ub, 'other');
$pattern = '#(?<browser>' . join('|', $known) .
')[/ ]+(?<version>[0-9.|a-zA-Z.]*)#';
if (!preg_match_all($pattern, $u_agent, $matches)) {
// we have no matching number just continue
}
// see how many we have
$i = count($matches['browser']);
if ($i != 1) {
//we will have two since we are not using 'other' argument yet
//see if version is before or after the name
if (strripos($u_agent,"Version") < strripos($u_agent,$ub)){
$version= $matches['version'][0];
}
else {
$version= $matches['version'][1];
}
}
else {
$version= $matches['version'][0];
}
// check if we have a number
if ($version==null || $version=="") {$version="?";}
return array(
'userAgent' => $u_agent,
'name' => $bname,
'version' => $version,
'platform' => $platform,
'pattern' => $pattern
);
}
// now try it
$ua=getBrowser();
// Make browser and variables readable
$browser = $ua['name'] . " v" . $ua['version'];
$user_agent = $ua['userAgent'];
编辑:澄清,这里是输出的错误信息(感谢您的抬头)
警告:编译失败:无法识别的字符(?&lt;在第150行/var/www/vhosts/staging.xxxxxxxxx.com/httpdocs/feedback/feedback-accept.php中的偏移3处
注意:未定义的索引:第155行的/var/www/vhosts/staging.xxxxxxxxx.com/httpdocs/feedback/feedback-accept.php中的浏览器
致命错误:调用未定义的函数:第159行的/var/www/vhosts/staging.xxxxxxxxx.com/httpdocs/feedback/feedback-accept.php中的strripos()
感谢您的帮助,您的信息和建议非常好。
Here is the phpinfo() of the server the script doesn't work on
答案 0 :(得分:3)
没有看到实际的错误是相当困难的,但我想罪魁祸首是strripos(),这只适用于PHP&gt; 5
更新后修改:我猜错了。顺便说一句,在这里看的时候,我发现了这个:
Fatal error: Call to undefined function: strripos()
有一个类似于你的代码veeery和一个公认的解决方案,你可以参考那个SO问题(如果你觉得它有用,一定要归功于那里的回答者)
答案 1 :(得分:1)
有一个对PHP版本有效的PHP函数。
它被称为“get_browser”,它基本上与你的功能做同样的事情。
答案 2 :(得分:0)
检查正则表达式的分隔符集是#
而不是默认设置的/
。
用于preg_match调用
$pattern = '#(?<browser>' . join('|', $known) .
')[/ ]+(?<version>[0-9.|a-zA-Z.]*)#';