DB Data display

[Kieran-R]

Hey

Im having a little problem. Im trying to print something from the database. As its pretty hard to explain, Ill give an example;

DB Data:

$r['level']*4+5

I want it to print out the value. NOT $r['level']*4+5.

Is there a solution, or a way that someone could tell me to overcome this problem?

 

Thanks.

[Equinox]

Use echo or print....

Seems fairly obvious to me.

[Curt]

here is an example how to do this:

 

$value=$ir['level']*5+4;

echo " The value is $value ";

 

remember to put () around the part of the equation you want to be executed first..such as:

 

$value=$ir['level']*(5+4);

 

This will make it so it adds 5+4 first then multiplies it by the users level.

Hope that helps you.

[Dominion]

Hey

Im having a little problem. Im trying to print something from the database. As its pretty hard to explain, Ill give an example;

DB Data:

$r['level']*4+5

I want it to print out the value. NOT $r['level']*4+5.

Is there a solution, or a way that someone could tell me to overcome this problem?

Thanks.

I don't really get the problem it's just maths... That or it's a very bad example -.-

[Kieran-R]

No. The maths is in a field of the database, and I want to print out the total value. Not the sum...

Just doing (example)

echo $r['blah'];

prints out the SUM. Not the total value.

[Dominion]

Eval() will work, however it's never really a good idea to use it. If you do you MUST make sure you only allow what you want (in this case numbers, and mathematical things like + etc...) Maybe something to split it up, and do it that way?

[Kieran-R]

Thanks Dominon.

Never used eval before, but I'll do some reasearch on it..

 

Cheers

[Dominion]

It's rather dangerous to use unchecked. Look into things like explode (and other functions to split the string up) first. I always try to avoid using to due to it's rather obvious flaw of allow any php to run user input or not. As i said if you go that way make sure it's checked by something.

[Kieran-R]

For what I'm using it for, there is no user input involved in any of the values I will be using. So I'm sure I will be fine ;)

[Dayo]

So you are trying to do something like this?

$lvl=$ir['level'];

echo 'some text'.($lvl*5+4).'some text';

[Kieran-R]

Noo.....

 

The SUM is in the database... I want the total of that sum to be displayed. I dont want the sum in the PHP code

[Kieran-R]

OK. Heres what ive come up with. But now when it is echo'd, nothing is appearing:

$chances=eval($chance['crimePERCFORM']);

echo $chances;

 

crimePERCFORM Data: (72+(($ir['level']/5)*10));

 

And as I said, nothing is printing out. Is there something im not doing right?