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Editorial Team
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Asked: 2026-06-02T12:58:27+00:00

For some security reasons I need to change apk file before user can download

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For some security reasons I need to change apk file before user can download apk file. But when I change .apk content, my app cant be installed. Its need to be resigned.

So I want to know how do I resign it using only zip-open/read/write operations or something else using php.

The only way I see is to install sdk tools on server and work with them with shell command in php. But I want to know if there are more easy ways to do this

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  1. Editorial Team

    The only way I see is to install sdk tools on server and work with them with shell command in php.

    In all likelihood, that is your only option. Even if somehow PHP had a fully-functioning jarsigner embedded in it, it is unlikely to also have zipalign.

    Note, though, that by “sdk tools”, you only really need the Java SDK (for jarsigner) and the zipalign binary (which, AFAIK, has no other dependencies). You should not need the entire Android SDK.

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