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<?php | |
// Example: Iterate over all resources from a paginated API endpoint | |
// PHP 5 vs PHP 7 | |
// Both examples iterate over records like this: | |
foreach (findAll() as $row) { | |
// Handle $row | |
} | |
// PHP 5 | |
function findAll() | |
{ | |
return getAllFromPage(1, []); | |
} | |
function getAllFromPage($pageNumber, $rows) | |
{ | |
$url = sprintf('?page=%d', $pageNumber); | |
$response = $this->restClient->query($url); // body is in $responseBody | |
$results = json_decode($responseBody, true); | |
foreach ($results['hits'] as $hit) { | |
$rows[] = new MakeModel($hit['make'], $hit['model']); | |
} | |
if ($nextpagehasrecords) { | |
$rows = $this->getAllFromPage(++$pageNumber, $rows); // $rows can grow HUGE, it's all in memory | |
} | |
return $rows; | |
} | |
// | |
// PHP 7 | |
// | |
function findAll() | |
{ | |
yield from getAllFromPage(1); | |
} | |
function getAllFromPage($pageNumber) | |
{ | |
$url = sprintf('?page=%d', $pageNumber); | |
$response = $this->restClient->query($url); // body is in $responseBody | |
$results = json_decode($responseBody, true); | |
foreach ($results['hits'] as $hit) { | |
yield new MakeModel($hit['make'], $hit['model']); | |
} | |
if ($nextpagehasrecords) { | |
yield from $this->getAllFromPage(++$pageNumber); // will yield each row to the caller 1-by-1 | |
} | |
} |
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