PHP Stellar SDK provides APIs to build and sign transactions, connect and query Stellar Horizon server.
This library is under active development and should be considered beta quality. Please ensure that you've tested extensively on a test network and have added sanity checks in other places in your code.
The repository is a part of the OpenSourceWebsite Organization. This project and everyone participating in it is governed by the Code of Conduct.
See the release notes for breaking changes.
See the getting-started directory for examples of how to use this library. Additional examples are available in the examples directory.
Please read through Stellar API Documentation and Stellar Testnet Documentation.
Please read through our Contribution Guidelines.
The preferred way to install this extension is through composer.
Either run
composer require opensourcewebsite-org/php-stellar-sdk
or add
"opensourcewebsite-org/php-stellar-sdk": "*"
to the require section of your composer.json file.
The largest PHP integer is 64-bits when on a 64-bit platform. This is especially important to pay attention to when working with large balance transfers. The native representation of a single XLM (1 XLM) is 10000000 stroops.
Therefore, if you try to use a MAX_INT number of XLM (or a custom asset) it is
possible to overflow PHP's integer type when the value is converted to stroops and
sent to the network.
This library attempts to add checks for this scenario and also uses a BigInteger
class to work around this problem.
If your application uses large amounts of XLM or a custom asset please do extensive
testing with large values and use the StellarAmount helper class or the BigInteger
class if possible.
Although not specific to Stellar or PHP, it's important to be aware of problems when doing comparisons between floating point numbers.
For example:
$oldBalance = 1.605;
$newBalance = 1.61;
var_dump($oldBalance + 0.005);
var_dump($newBalance);
if ($oldBalance + 0.005 === $newBalance) {
print "Equal\n";
}
else {
print "Not Equal\n";
}The above code considers the two values not to be equal even though the same value is printed out:
Output:
float(1.61)
float(1.61)
Not Equal
To work around this issue, always work with and store amounts as an integer representing stroops. Only convert back to a decimal number when you need to display a balance to the user.
The static StellarAmount::STROOP_SCALE property can be used to help with this conversion.
This project is open source and available freely under the MIT license.