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Informations about the package eval-math

Composer/Packagist version of EvalMath by Miles Kaufman Copyright (C) 2005 Miles Kaufmann http://www.twmagic.com/ NAME

EvalMath - safely evaluate math expressions

DESCRIPTION

Use the EvalMath class when you want to evaluate mathematical expressions 
from untrusted sources.  You can define your own variables and functions,
which are stored in the object.  Try it, it's fun!

SYNOPSIS

`$m = new EvalMath;`

`// basic evaluation:`
`$result = $m->evaluate('2+2');`

`// supports: order of operation; parentheses; negation; built-in functions`
`$result = $m->evaluate('-8(5/2)^2*(1-sqrt(4))-8');`

`// create your own variables`
`$m->evaluate('a = e^(ln(pi))');`

`// or functions`
`$m->evaluate('f(x,y) = x^2 + y^2 - 2x*y + 1');`

`// and then use them`
`$result = $m->evaluate('3*f(42,a)');`

`// use methods (calc functions)
`$m->evaluate('1+max(2,3)') // => 4`
`$m->evaluate('if(1=2, 2+2, 5+5') // => 10

METHODS

`$m->evaluate($expr)`
    Evaluates the expression and returns the result.  If an error occurs,
    prints a warning and returns false.  If $expr is a function assignment,
    returns true on success.

`$m->e($expr)`
    A synonym for $m->evaluate().

`$m->vars()`
    Returns an associative array of all user-defined variables and values.

`$m->funcs()`
    Returns an array of all user-defined functions.

CALC METHODS (CALC FUNCTIONS)

CREATE YOUR OWN CUSTOM CALC METHODS (CALC FUNCTIONS)

You can create custom classes, that implements custom calc methods.

TODO

CREDITS AND COPYRIGHTS

This software integrates several libraries and patches by:

All versions of eval-math with dependencies

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Requires php Version ^7 || ^8.0
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