Stellar PHP SDK API Documentation

LiquidityPoolsRequestBuilder extends RequestBuilder
in package

Builds requests for the liquidity pools endpoint in Horizon

This class provides methods to query liquidity pools on the Stellar network. Liquidity pools enable automated market making by allowing users to deposit assets into pools that facilitate trading without traditional order books.

Query Methods:

  • forPoolId(): Fetch a single liquidity pool by its ID
  • forReserves(): Filter by specific reserve assets in the pool
  • forAccount(): Get all liquidity pools an account participates in

Liquidity pool IDs can be provided in either PoolID format (starts with "L") or as hex strings.

Usage Examples:

// Get a specific liquidity pool $pool = $sdk->liquidityPools()->forPoolId("LABC123...");

// Get all pools for specific reserve assets $pools = $sdk->liquidityPools() ->forReserves("native", "USD:GBBD...") ->execute();

// Get all pools an account participates in $pools = $sdk->liquidityPools() ->forAccount("GDAT5...") ->execute();

Tags
see
LiquidityPoolsPageResponse

For the response format

see
https://developers.stellar.org

Stellar developer docs Horizon API Liquidity Pools endpoint

Table of Contents

Constants

HEADERS  = ["X-Client-Name" => "stellar_php_sdk", "X-Client-Version" => \Soneso\StellarSDK\StellarSDK::VERSION_NR]

Properties

$httpClient  : Client
$queryParameters  : array<string|int, mixed>
$segments  : array<string|int, mixed>

Methods

__construct()  : mixed
Constructor
buildUrl()  : string
Builds the complete request URL with all segments and query parameters
cursor()  : LiquidityPoolsRequestBuilder
Sets <code>cursor</code> parameter on the request.
execute()  : Response
Build and execute request.
executeRequest()  : Response
Executes an HTTP request to Horizon and returns a parsed response object
forAccount()  : LiquidityPoolsRequestBuilder
Returns all liquidity pools the specified account is participating in.
forPoolId()  : LiquidityPoolResponse
Requests <code>GET /liquidity_pools/{liquidity_pool_id}</code>
forReserves()  : LiquidityPoolsRequestBuilder
Returns all liquidity pools that contain reserves in all specified assets.
getAndStream()  : void
Streams Server-Sent Events from Horizon to a callback function
limit()  : LiquidityPoolsRequestBuilder
Sets <code>limit</code> parameter on the request.
order()  : LiquidityPoolsRequestBuilder
Sets <code>order</code> parameter on the request.
request()  : LiquidityPoolsPageResponse
Requests specific <code>url</code> and returns {@link LiquidityPoolsPageResponse}.
setSegments()  : RequestBuilder
Sets the URL path segments for this request

Constants

HEADERS

public mixed HEADERS = ["X-Client-Name" => "stellar_php_sdk", "X-Client-Version" => \Soneso\StellarSDK\StellarSDK::VERSION_NR]

Properties

$queryParameters

protected array<string|int, mixed> $queryParameters

Methods

__construct()

Constructor

public __construct(Client $httpClient) : mixed
Parameters
$httpClient : Client

The HTTP client used for making requests to Horizon

buildUrl()

Builds the complete request URL with all segments and query parameters

public buildUrl() : string

Combines the URL path segments with query parameters to create the final request URL string that will be sent to Horizon.

Return values
string —

The constructed URL with query parameters

executeRequest()

Executes an HTTP request to Horizon and returns a parsed response object

public executeRequest(string $url, string $requestType[, string|null $requestMethod = "GET" ]) : Response

This method sends the HTTP request to the Horizon server, handles errors, and parses the JSON response into the appropriate response type.

Parameters
$url : string

The complete request URL to fetch

$requestType : string

The expected response type for parsing

$requestMethod : string|null = "GET"

The HTTP method to use (default: "GET")

Tags
throws
HorizonRequestException

If the request fails or response cannot be parsed

Return values
Response —

The parsed response object of the specified type

getAndStream()

Streams Server-Sent Events from Horizon to a callback function

public getAndStream(string $relativeUrl, callable $callback[, bool $retryOnServerException = true ]) : void

This method establishes a persistent connection to Horizon's streaming endpoints using Server-Sent Events (SSE). It processes each event and passes the parsed data to the provided callback function. The stream automatically reconnects on server exceptions if retryOnServerException is true.

Horizon streaming uses SSE to push real-time updates. The stream sends:

  • "hello" message on connection
  • "byebye" message on disconnection
  • JSON data objects for actual events
Parameters
$relativeUrl : string

The relative URL to stream from

$callback : callable

Function to receive parsed event data

$retryOnServerException : bool = true

If true, automatically retry on server errors (default: true)

Tags
throws
GuzzleException

If a network error occurs and retryOnServerException is false

Return values
void —

This method runs indefinitely until interrupted

setSegments()

Sets the URL path segments for this request

protected setSegments(string ...$segments) : RequestBuilder

This method constructs the URL path by combining multiple segments. Can only be called once per request builder instance.

Parameters
$segments : string

Variable number of URL path segments

Tags
throws
RuntimeException

If segments have already been set

Return values
RequestBuilder —

This instance for method chaining


        

        
    




    

    

                                

                

                                
    

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