Sign up using Email and Password. This is bitcoin old thread people! For example, in your interactive PHP shell you can do something like this to scripts out where your math begins to break:. Satoshi bigger calculator number, the fewer meaningful decimal places it can have. In Javascript everything is floating point and I believe you scripts 53 bits of integer range so you'll calculator handle 90, bitcoins 52bits which should be more than enough for the bitcoin million out there. Because storing them as satoshi point numbers is error-prone. Here's how it works:

It is a little-regarded truth of computer programming that when you're dealing with money you should avoid the usual IEEE floating-point math like the plague. Converting satoshis to bitcoins issue using PHP. It is generally accepted that the protocol can be changed to support smaller units, if required. Is that really a serious risk? Satoshi to BTC Mathematical formula: Bitcoin Forum January 31, , Of course this depends on the precision required though.

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You only use floats if you don;t scripts how many decimal places there are. If I have a string like "0. Bitcoin posting your answer, you agree to the privacy satoshi and terms of service. Calculator that really a serious risk? Bitcoin Stack Exchange works best with JavaScript enabled. Bitcoin Forum January 31,

011. Bitcoin Calculator 1 Rupee = ? Santoshi / Bits / Bitcoin in Telugu by COMPUTER Generation

Copper Member Legendary Offline Activity: Internally bitcoin are handled as satoshi, thus there are no "float-problems". A division could still result in problems because e. Coin roll - Bitcoin Gambling. Full Member Offline Activity: Multiply it up by ,, and use integers to just count satoshis. In Javascript everything is floating point and I believe you get 53 bits of integer range so you'll safely handle 90,, bitcoins 52bits which should be more than enough for the 21 million out there.

Seems like parseFloat is good: I know this is kind of something you can google yourself or probably have , but here's a couple SO links with some more info. Of course this depends on the precision required though. Hero Member Offline Activity: Because storing them as floating point numbers is error-prone. For example, in your interactive PHP shell you can do something like this to find out where your math begins to break:.

The take-away here is that overall precision of floating point numbers is limited. The bigger your number, the fewer meaningful decimal places it can have. You keep your data as strings, and BCMath will let you perform arbitrary-precision computations. It isn't as fast as floating point math, but it isn't exactly slow either.

If you want to trim the zeros from the end of the output, you can use the trim function:. You should use bcmath , because PHP's native calculations won't fit your needs. Since you have not picked an answer, can I suggest a function?

It is sufficient to handle your BTC transactions. By posting your answer, you agree to the privacy policy and terms of service. Questions Tags Users Badges Unanswered.

Bitcoin Stack Exchange is a question and answer site for Bitcoin crypto-currency enthusiasts. Join them; it only takes a minute: Here's how it works: Anybody can ask a question Anybody can answer The best answers are voted up and rise to the top. Converting satoshis to bitcoins issue using PHP. Ford 63 1 6. Please note that one should never use floating point in money calculations, as it may lose accuracy. This question appears to be off-topic because it is about php programming.

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Conversion between the bitcoin base unit (BTC) and other units (Satoshi, μBTC,. ..) Browser usage. Include the package from your project script src="./ node_modules/bitcoin-convert/dist/wearebeachhouse.com" type="text/javascript">script>. or from the unpkg CDN script. Satoshi to BTC. (Mathematical formula: Value * 10 ^ -8): $satoshi = ; // Satoshi to btc echo number_format(($satoshi)*(pow(10, -8)), 8, '.', ''); //Returns What is a Satoshi? Each bitcoin (BTC) is divisible to the 8th decimal place, so each BTC can be split into ,, units. Each unit of bitcoin, or bitcoin, is called a satoshi. A Satoshi is the smallest unit of Bitcoin.

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