Multiplying and API output by another API output

[The_Trader]

Hi all

So I have built myself a php page to track my BTC holdings, and I am trying to add a value in $ box on the page.

I have an API output that is the current price of BTC (A) and I have an output of my BTC holdings (B) they are both via API.

Is it possible to multiply A by B to get (C - my holding value in $)

Thanks in advance for any help with this, I am on a rented OVH box running command line ubuntu 20xx.

TT

[TryNinja]

Yes, it’s as simple as just doing it.

Code:

$holdings = …
$value = …

$result = $holdings * $value

[The_Trader]

Yes, is as simple as just doing it.

Code:

$holdings = …
$value = …

$result = $holdings * $value

Thanks that worked, I just coudn't see the wood from the tree's

TT

[The_Trader]

Could I ask another question.

So my output reads "$2736.82192175615" I would like to make it read $2736.82
I have searched for an answer but am having issues, I think it is something to do with "sprintf" but I cant get it to work

I am using this to fetch and display the price:

Code:

 
$url = "http://chainz.cryptoid.info/btc/api.dws?q=ticker.usd";
$price = json_decode(file_get_contents($url), true);
echo "$price";

Thanks
TT

[coinableS]

Use number_format()

Code:

$value = 1234.7890;
$formattedValue = number_format($value,2);

[The_Trader]

Use number_format()

Code:

$value = 1234.7890;
$formattedValue = number_format($value,2);

Thanks for your reply, how/where do I insert this, because this isn't working the way I have done it. I guess it needs to be placed somewhere else:


$result = $holding * $price;
$value = 1234.7890;
$formattedValue = number_format($value,2);
echo "$result";

Thank you for taking the time to help with this.

TT

[TryNinja]

Thanks for your reply, how/where do I insert this, because this isn't working the way I have done it.

That's basic PHP, just learn how to insert a variable somewhere.

echo $result has no quotes, otherwise you are literally printing the text "$result" and not what's inside the variable.

For example, you can insert that in the middle of your HTML page:

Code:

<div>
  Total value: <#php echo $result; #>
</div>

P.S: change # for ? (the forum is blocking me from using the right code)

[The_Trader]

Thanks for your reply, how/where do I insert this, because this isn't working the way I have done it.

That's basic PHP, just learn how to insert a variable somewhere.

echo $result has no quotes, otherwise you are literally printing the text "$result" and not what's inside the variable.

For example, you can insert that in the middle of your HTML page:

Code:

<div>
  Total value: <#php echo $result; #>
</div>

P.S: change # for ? (the forum is blocking me from using the right code)

Hi I did not realise I could just do that, the issue I am having at present is formating the number out put from for example $1234.567891234566 to $1234.56

Thanks
TT

[TryNinja]

Hi I did not realise I could just do that, the issue I am having at present is formating the number out put from for example $1234.567891234566 to $1234.56

coinableS already told you what you should do:

Use number_format()

Code:

$value = 1234.7890;
$formattedValue = number_format($value,2);

Then, just use the new variable $formattedValue:

Code:

echo $formattedValue;

You should take some time to learn PHP, since this is all very basic. A ~30 minutes Youtube video should be enough to get your started.

[The_Trader]

Hi I did not realise I could just do that, the issue I am having at present is formating the number out put from for example $1234.567891234566 to $1234.56

coinableS already told you what you should do:

Use number_format()

Code:

$value = 1234.7890;
$formattedValue = number_format($value,2);

Then, just use the new variable $formattedValue:

Code:

echo $formattedValue;

You should take some time to learn PHP, since this is all very basic. A ~30 minutes Youtube video should be enough to get your started.

I have been watching videos and reading tutorials, and taking php examples and altering them.
The issue here is I can not figure this out:

Code:

$result = $holding * $price;
$value = 1234.7890;
$formattedValue = number_format($value,2);
echo "$result";

The top and bottom lines are what I am using and they are giving me the correct out put, just the format is too long.
I do not understand where the $value has come from or the numbers 1234.7890.

Should the $value be changed to $result to link up with what i have called it in my bit of code ?

Please understand I am not being lay and have and am learning PHP its just a few things confuse me, and I do appreciate you taking the time to reply.

Thanks
TT

EDIT - figured it out... Thank you for helping

Code:

$result = $holding * $price;
$value = $result;
$formattedValue = number_format($value,2);
echo $formattedValue;