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Editorial Team
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Asked: 2026-06-18T12:48:26+00:00

I am trying to make a mobile detection class that is supposed to strip

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I am trying to make a mobile detection class that is supposed to strip the user agent to a simple basic string like this:

Output:
Mozilla/5.0 (*Linux x86_64*) AppleWebKit/* (KHTML, like
Gecko) Chrome/* Safari/*

from this:

Input: (HTTP_USER_AGENT)
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.17 (KHTML, like Gecko)
Chrome/24.0.1312.69 Safari/537.17

I am using this: /[0-9.-]{4,}/i pattern to strip the numbers and I get:

RESULT OF WHERE AM I SO FAR WITH ABOVE PATTERN:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/* (KHTML, like Gecko)
Chrome/* Safari/*

but my problem is how to remove the X11; I want a pattern that will remove everything everything after the first opening bracket and till the first empty space I think it is the right way. Acceptable alternative will be to be able to remove the brackets at all with a pattern.

Any suggestions?

PS: I am needing this to solve a problem with mobile detection and the dependency on browscap. So please no downvotes please!

PS2: the main purpose of this is to detect mobile clients and a desktop. after that I will tweak it to give information for the OS, and etc..

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1 Answer

  1. Editorial Team

    Replace X11; but not KHTML:

    preg_replace('/\([^,)]*? ([^\)]+)/','(*\1*',$agent);

    Explained demo here: http://regex101.com/r/vL6gT1

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