I did this in school..

[dreamwest]

I know ive done this in school but im trying to get a percentage of 100

 

i have always 2 numbers:

 

7 and 3

 

$total = (7 * 3 ) /100 ;    // is 0.21 aka 21%

 

Bt what happens with larger numbers like this below the same function goes crazy

 

3456 and 39

[Jibberish]

Crazy in what way? if you use numbers like that your going to get a percent over 100. i.e with those ones it will be 1347.84%

[joel24]

i always used

$total = (mark / totalPossible) * 100;

 

 

[dreamwest]

Crazy in what way? if you use numbers like that your going to get a percent over 100. i.e with those ones it will be 1347.84%

 

Yeah thats why its crazy. I need to show a percentage like 63% with  max of 100% not 1347.84%

 

Can anyone see a simple way of doing it?

 

Ok if theres 10 ppl and 7 say yes and 3 say no - what percentage says yes

 

Answer : 23%

 

But what if theres 1230 ppl and 14 say yes and 1216 say no , what percentage says yes. This is what im after

[Dathremar]

Ok if theres 10 ppl and 7 say yes and 3 say no - what percentage says yes

 

Answer : 23%

 

That doesn't make any sense.

 

But if You want to make a percentage of something you need to know whats the max ie.

 

10 ppl

7 say yes

3 say no

 

so 7*1/10 = 0.7 * 100 = 70% yes ppl

3 * 1 / 10 = 0.3 * 100 = 30% no ppl

 

ie2.

1230 ppl and 14 say yes and 1216

 

1216*100 * 1/1230 = yes percentage

14 *100 1/1230 = no percentage

 

Hope you understand this

[dreamwest]

Ezxcellent. Thanks!

[.josh]

Dude what do they teach you kids in school these days? They obviously aren't teaching even basic math.. should just cut to the chase and teach you how to hold a spatula and flip a burger so you'll be prepared for your future career.

 

What's really sad is that I'm not joking.  I used to manage a fastfood joint and you'd be surprised at how many people failed at even doing stuff like that.

[MadTechie]

Mc D's maybe a little advanced, I got a burger and had to complain as the cheese was on the bottom with no bottom bun!

 

The guy said "sorry, that guy is new"

 

I mean WTF.. its a burger !

[EchoFool]

Dude what do they teach you kids in school these days? They obviously aren't teaching even basic math.. should just cut to the chase and teach you how to hold a spatula and flip a burger so you'll be prepared for your future career.

 

What's really sad is that I'm not joking.  I used to manage a fastfood joint and you'd be surprised at how many people failed at even doing stuff like that.

 

Calm down for all you know he could be a youngster, in which case hes not doing bad having a go at PHP (though it does depend on age)....

[.josh]

We're not talking about php, we're talking about basic math you learn in like 1st grade.  Seriously, my 8 year old just finished 2nd grade.  He brought home homework last year (1st grade) dealing with %'s.  So hey OP, if you're like 8 years old, hats off to you bud. 

[dreamwest]

Dude what do they teach you kids in school these days? They obviously aren't teaching even basic math.. should just cut to the chase and teach you how to hold a spatula and flip a burger so you'll be prepared for your future career.

 

What's really sad is that I'm not joking.  I used to manage a fastfood joint and you'd be surprised at how many people failed at even doing stuff like that.

 

I did maths B...and physics, was a b+ student. Sometimes i get writers block - programming style. Thats why u see me asking all the stupid questions - Im not stupod hunust

 

Calm down for all you know he could be a youngster, in which case hes not doing bad having a go at PHP (though it does depend on age)....

 

Check my profile to see how old i am....

[Ken2k7]

Percentage is always portion divided by total. So if you have 5000 votes and 6 says yes, then 5000 is the total and 6 is the portion; ergo, (6/5000) * 100 to get the percentage.

[MadTechie]

Ken2k7, do you read the posts in the thread or just the first one!

[.josh]

Ken2k7, do you read the posts in the thread or just the first one!

 

He's a very busy guy. He can't be bothered with details like reading past the first post.

 

Also, if you live by the philosophy that you are right and everybody else is wrong (which a lot of people seem to), it's really a waste of time to read past the first post. 

 

So he's just being efficient here.  You should applaud him.

[shedokan]

I think a better way to do this is, gethow much 1 percent is and divide the number you want to know how much percents it is.

like this:

 

to get how much percents 7 is in 10:

10/100=0.1

7/0.1=70

 

so in php

$percents = 7 / (10/100);

 

I think that's a lot easier than your ways.

[phant0m]

what about something like this

  function get_percentage($val1, $val2, $precision=0){
    $total = $val1 + $val2;
    $result = array();
    $result[] = round($val1 / $total * 100, $precision);
    $result[] = 100 - $result[0];
    return $result;
  }

 

get_percentage(2, 4, 2); would return an array:

Array
(
    [0] => 33.33
    [1] => 66.67
)

[.josh]

I think a better way to do this is, gethow much 1 percent is and divide the number you want to know how much percents it is.

like this:

 

to get how much percents 7 is in 10:

10/100=0.1

7/0.1=70

 

so in php

$percents = 7 / (10/100);

 

I think that's a lot easier than your ways.

 

umm..so how is

 

$percents = 7 / (10/100);

 

any easier than

 

$percents = (7 / 10) * 100;

 

 

[.josh]

what about something like this

  function get_percentage($val1, $val2, $precision=0){
    $total = $val1 + $val2;
    $result = array();
    $result[] = round($val1 / $total * 100, $precision);
    $result[] = 100 - $result[0];
    return $result;
  }

 

get_percentage(2, 4, 2); would return an array:

Array
(
    [0] => 33.33
    [1] => 66.67
)

 

so what are going to do with that function if you want to know what % 13 out of 45 is?

[phant0m]

bascially, it is an answer to this question:

 

Ok if theres 10 ppl and 7 say yes and 3 say no - what percentage says yes

 

Answer : 23%

 

But what if theres 1230 ppl and 14 say yes and 1216 say no , what percentage says yes. This is what im after

[shedokan]

I think a better way to do this is, gethow much 1 percent is and divide the number you want to know how much percents it is.

like this:

 

to get how much percents 7 is in 10:

10/100=0.1

7/0.1=70

 

so in php

$percents = 7 / (10/100);

 

I think that's a lot easier than your ways.

 

umm..so how is

 

$percents = 7 / (10/100);

 

any easier than

 

$percents = (7 / 10) * 100;

 

 

 

actually your'e right, but I think it looks cleaner.