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working implementation of getEventLogs

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A working, improved and deciphered version of the function alluded to in https://github.com/web3p/web3.php/issues/93
This commit is contained in:
Nanolucas 2021-01-03 00:05:06 +01:00
parent af3bd4c373
commit 816c2238a3
1 changed files with 48 additions and 0 deletions
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48
src/Contract.php
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@ -863,4 +863,52 @@ class Contract
return $functionData;
}
}
/**
* getEventLogs
*
* @param string $eventName
* @param string|int $fromBlock
* @param string|int $toBlock
* @return string
*/
public function getEventLogs(string $eventName, $fromBlock = 'latest', $toBlock = 'latest')
{
if ($fromBlock != 'latest') {
if (!is_int($fromBlock) || $fromBlock < 1) {
throw new InvalidArgumentException('Please make sure fromBlock is a valid block number');
} else if ($toBlock != 'latest' && $fromBlock > $toBlock) {
throw new InvalidArgumentException('Please make sure fromBlock is equal or less than toBlock');
}
}
if ($toBlock != 'latest') {
if (!is_int($toBlock) || $toBlock < 1) {
throw new InvalidArgumentException('Please make sure toBlock is a valid block number');
} else if ($fromBlock == 'latest') {
throw new InvalidArgumentException('Please make sure toBlock is equal or greater than fromBlock');
}
}
$eventSignature = $this->ethabi->encodeEventSignature($this->events[$eventName]);
$eventInputParametersStringArray = array_column($this->events[$eventName]['inputs'], 'type');
$this->eth->getLogs([
'fromBlock' => (is_int($fromBlock)) ? '0x' . dechex($fromBlock) : $fromBlock,
'toBlock' => (is_int($toBlock)) ? '0x' . dechex($toBlock) : $toBlock,
'topics' => [$eventSignature],
'address' => $this->toAddress
],
function ($error, $result) use (&$output, $eventInputParametersStringArray) {
if ($error !== null) {
throw new RuntimeException($error->getMessage());
}
foreach ($result as $object) {
$output[] = $this->ethabi->decodeParameters($eventInputParametersStringArray, $object->data);
}
});
return $output;
}
}