lest say I have a inputbox in html and I want to compute the answer to ..hmm lets say
1 + 2 - 1 * 6 + 8 / 2
want is the basic function for this? you can just teach me the basics, or advice something . I'm new to PHP
Shizuo 0 Light Poster
sv3tli0 0 Junior Poster in Training
in real if you just set it to calculate this directly it will do it :)
php is making math calculations so it will calculate this for you
try:
<?php
$var=1 + 2 - 1 * 6 + 8 / 2;
echo $var; ?> Shizuo 0 Light Poster
oh. thanks man.
I have another question , how about I add a square root added to the above example like
1 + 2 - 1 * 6 + 8 / 2 + √2
should I make anther function for the sqr root?
sv3tli0 0 Junior Poster in Training
correct name for it is: sqrt
sqrt(9)=3
Shizuo 0 Light Poster
ok I get it, but lets say I have button for sqrt which will add the sqrt symbol in the input area . but how do I exactly compute the sqrt if inside the input is the symbol.
diafol
you can't use the symbol.
you just use sqrt().
If you want a visual, use the html character number for the symbol, but don't use this in the calculation.
alternatively, use pow($number,0.5), but that isn't an improvement.
You can't read the input box and get php to evaluate it, you'll need to use substitution and possibly reorganization to get it to work.
Shizuo 0 Light Poster
ah yes , it just echoed my inputs . how do I make it compute?
diafol
You can't read the input box and get php to evaluate it
unless input box has readable php format, which it probably won't.
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