sum(sum(1, 1, 2), 1, 2)

Trows a Mismatched parenthesis

There is no licence file in this repository.

Which licence is this software licensed under? Is it open source?

5sin(1.5707963267) = 51
and
sin(1.5707963267)5 = 15

Hi Jon,

Could you make one small change and make the visibility of replaceVars "public" instead of protected - it's quite a handy method for debugging and display purposes.

Love the class - very helpful!
Cheers,

Numbers input in scientific notation are not interpreted as expected. For example:

eos->solveIF('100*2e-9')

will output 191 instead of the expected 2.0e-7

As a quick fix, I performed a string replace after the variable replacement in solveIF()

// fix up scientific notation
$infix = str_ireplace("e","*10^",$infix);

I'm not sure if this will work under all conditions but I need it working for the moment.

Hi jon,
Parser class replaceVars($infix, $vArray) method, if $vArray has value scientific notation
（like Parser::solveIF('x(1+y)',['x'=>1,'y'=>0.00000008]);
'y' will be convert into 8E-8 by php)
as follows code

if (in_array(strtolower($match[2]), array('pi', 'e'))) {
       $t = (strtolower($match[2]) == 'pi') ? pi() : exp(1);
       $infix = str_replace($match[0], $match[1] . $front . $t . $back . $match[3], $infix);
       .....
}

will go wrong.

I am always getting these warnings/errors:

Notice (8): Undefined offset: 0 [APP\Vendor\eqEOS.php, line 170]

Notice (8): Undefined offset: 1 [APP\Vendor\eqEOS.php, line 167]

Notice (8): Undefined offset: 2 [APP\Vendor\eqEOS.php, line 170]

code:

$eq=new eqEOS();
$val_qty=$eq->solveIF('$width*5', 3);

Hi,

I am trying to evaluate following code.

include('matheval/eos.class.php');
$tempArr = array('abc'=>11685,'xyz_pqr'=>1169778);

$eos = new eqEOS();
$expressionToEval = '($abc)*100/($xyz_pqr)';

$tempVal = $eos->solveIF($expressionToEval,$tempArr);

It throws following fatal error.

PHP Fatal error: Uncaught exception 'Exception' with message 'Variable replacement does not exist for '$xyz' in ($abc)*100/($xyz_pqr)' in matheval/eos.class.php:365
Stack trace:
#0 temp.php(7): eqEOS->solveIF('($abc)*100...', Array)
#1 {main}

thrown in matheval/eos.class.php on line 365

So due to underscore it is creating an issue. I tried it with removing underscore and it worked.