Detecting Android Browser (from v. 1 to 2.3 firmware) in PHP

Question

I need to detect if the browser is Android (only from 1 to version 2.3), would this work?

if(preg_match('/Android [1-2.3]/', $_SERVER['HTTP_USER_AGENT'])) {
 echo 'something';
}

No. The regex engine can't know how ranges of version numbers work, can it? Also you are misusing the character class, even if it was just a range of numbers you are trying to match. This will match `Android 1`, `Android 2`, `Android .` and `Android 3`. In fact it will match if any of these is a substring of the input (so it would also match `Android 2.5`). Could you show us the actual possible version numbers that could show up in the input? — Martin Ender, Dec 24 '12 at 13:26
Well, I need to echo a fallback for android versions that don't support SVG (so all the versions < 2.3). — MultiformeIngegno, Dec 24 '12 at 13:27
That doesn't really help here. A list of "bad" version numbers would. — Martin Ender, Dec 24 '12 at 13:29

score 0 · Answer 1 · answered Dec 24 '12 at 13:31

I don't know really know what the UserAgents for those devices look like, but the pattern you have is not likely to be what you want. I suspect you want something more along the lines of:

'/Android (1\.\d|2\.[012])/'

There are lots of different ways you could write the pattern, but essentially this one says that Android needs to be followed by either 1.{any number} or 2.0, 2.1 or 2.2

Mansoor Jafar · Accepted Answer · 2012-12-25T04:55:26.787

0

Following Regex can match exactly Android [1-2.3] .

Android ([1](?:\.[0-9])?|[2](?:\.[0-3])?$)

For MSIE [6-8] Android [1-2.3]

MSIE [6-8] Android ([1](?:\.[0-9])?|[2](?:\.[0-3])?)$

Running regex here

edited Dec 25 '12 at 04:55

answered Dec 24 '12 at 13:37

Mansoor Jafar

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Will also match `Android 2.4` – Martin Ender Dec 24 '12 at 13:45
What about this? /Android [12]\.\d/ – MultiformeIngegno Dec 24 '12 at 13:46
@MultiformeIngegno that will also match any version `2.*` – Martin Ender Dec 24 '12 at 13:46
Thanks! :) Last question, how can I "integrate" this regex with /MSIE [6-8]/? It should be something like if(preg_match('/MSIE [6-8]|Android [1](?:\.[0-9])?|Android [2](?:\.[0-3])?$/', $_SERVER['HTTP_USER_AGENT'])) Correct? :) – MultiformeIngegno Dec 24 '12 at 14:40
@MultiformeIngegno it will be like `MSIE [6-8](Android [1](?:\.[0-9])?|Android [2](?:\.[0-3])?$)` adjust the spaces in between. – Mansoor Jafar Dec 24 '12 at 14:49
MSIE [6-8]Android ([1](?:\.[0-9])?|[2](?:\.[0-3])?)$ this will be good, @MultiformeIngegno because the part outside is static not changing. – Mansoor Jafar Dec 24 '12 at 14:54
Uhm.. doesn't seem to match IE :( – MultiformeIngegno Dec 24 '12 at 14:57
@MultiformeIngegno it's working well, see running regex here http://regexr.com?337tj . – Mansoor Jafar Dec 25 '12 at 04:50

score 0 · Answer 3 · answered Dec 24 '12 at 13:43

I would like to suggest you use Browscap for browser detection.

get_browser function doc http://php.net/manual/en/function.get-browser.php

'Actual' browscap .ini file downloads http://tempdownloads.browserscap.com

It should be noted that the project is closed at the moment and further update of browser-database in question.

Usage exapmle in your case:

$browser = get_browser(null, true);
if (array_key_exists('Platform', $browser) && array_key_exists('Platform_Version', $browser) && $browser['Platform'] == 'Android' && $browser['Platform_Version'] <= 2.3) {
    echo 'Android <2.3 version';
}

score 0 · Answer 4 · answered Oct 11 '13 at 16:35

You can use the following regex to get the Android browser version, be it in x.x.x format or x.x. I have a regex to determine if the device is using one of the versions I'm supporting (2.3.x +):

/Android ([2].?[3-9].?[0-9]?|[3].?[0-9].?[0-9]?|[4].?[0-9].?[0-9]?)/

score 0 · Answer 5 · answered Mar 12 '14 at 20:22

From github I found this code very useful: https://gist.github.com/Abban/3939726

if(is_old_android('2.3')) {
  echo 'This device has Android 2.3 or lower';
}

function is_old_android($version = '4.0.0'){
   if(strstr($_SERVER['HTTP_USER_AGENT'], 'Android')){

     preg_match('/Android (\d+(?:\.\d+)+)[;)]/', $_SERVER['HTTP_USER_AGENT'], $matches);

     // $matches[0]= Android 4.1.2;
     // $matches[1]= 4.1.2

        return version_compare($matches[1], $version, '<=');
    }
}

Very useful function: version_compare

Detecting Android Browser (from v. 1 to 2.3 firmware) in PHP

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