Variable returns result of equation -- is there a way to echo equation from var?

[thepip3r]

$thc = round(((($_GET['h'] / 25.4) * ($_GET['w'] * .01) * 2) + $_GET['d']), 2);

 

so... $thc ends up being the result of an equation.  my question is:  Is there some function that will show the EQUATION itself using the variable $thc or do I have duplicate rewrite the equation preformatted to show the equation?

 

so... for example:

echo $thc; //gives something like 28.80
//and
print_pre($thc); //gives "round(((($_GET['h'] / 25.4) * ($_GET['w'] * .01) * 2) + $_GET['d']), 2)"

[soak]

Can't you just echo:

 

<?php

echo 'round(((($_GET[\'h\'] / 25.4) * ($_GET[\'w\'] * .01) * 2) + $_GET[\'d\']), 2) = '.$thc;

[thepip3r]

i want to echo the equation in a different place than i'm assigning.