> Hi, > > I have a maths question. > > I'm trying to create a html form where a user can enter formula in an > input box (e.g. '$a + $b - 10') and posts it to PHP. > The variables $a and $b are known but the formula can be changed on the > form (e.g. '$a / $b * 2'). > I want PHP to take the text input, the formula and calculate the result > and display the results. > > How ? > > Thanks > > Richard
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