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http://buildingbrowsergames.com/2008/06/13/building-browsergames-creating-the-bank-php/
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Building Browsergames: Building Browsergames: Creating the bank (PHP)

Mattias · 1 year ago

Hi, I just noticed something about your code. If the user is to enter a negative amount and deposit it, they would get more gold than they had in their hand and get a negative bank value.

Just thought I'd point it out.
Luke · 1 year ago

Hi Mattias,

Nice catch! I completely missed that that bug was there. I will post a fix shortly.
Mattias · 1 year ago

An easy way to fix it is to use PHP's abs() function to force the number to be positive :)
MrLollige · 7 months ago

Thanks mattias, that function is helpful!