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Asked: 2026-05-26T00:14:04+00:00

I’m looking for a generalized equation solver in PHP. This could either be in

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I’m looking for a generalized equation solver in PHP. This could either be in the form of in-built functionality, a library, or even integration with another language if it comes to it. I am even comfortable with a joint solution that involves some combination of the above. I need this for an educational website on which I am working.

Let me give a series of equations that I would ideally expect such a solver to deal with:

x+5=8 => x=3
x^2=5 => x=+/-sqrt(5) [exact solution in terms of sqrt, ln, or whatever] AND
         x=+/-2.236 [approximate solution to certain number of digits]
x+y=-3 [solve in terms of y] => y=-x-3
x^2=-5 => x=+/5i
x+y=3 and x-y=3 => x=3, y=0

I hope this is not a bridge too far. If so, I’ll build the functionality as each problem comes in-house, but if anyone knows of the proper library for such a set of problems, I would greatly appreciate it.

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  1. Editorial Team

    Check out Sage, from their website:

    Sage is a free open-source mathematics software system licensed under the GPL. It combines the power of many existing open-source packages into a common Python-based interface.
    Mission: Creating a viable free open source alternative to Magma, Maple, Mathematica and Matlab.

    Sage has an AJAX-based notebook interface, that is probably as good as an API that you can use from PHP.

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