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rtuin/generators.php

Last active March 21, 2016 13:05
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Revisions

  1. Richard Tuin revised this gist Mar 21, 2016. 1 changed file with 18 additions and 13 deletions.
    31 changes: 18 additions & 13 deletions generators.php
    View file
    Original file line number Diff line number Diff line change
    @@ -3,51 +3,56 @@
    // Example: Iterate over all resources from a paginated API endpoint
    // PHP 5 vs PHP 7

    //
    // PHP 7
    //
    // Both examples iterate over records like this:
    foreach (findAll() as $row) {
    // Handle $row
    }

    // PHP 5

    function findAll()
    {
    yield from getAllFromPage(1);
    return getAllFromPage(1, []);
    }

    function getAllFromPage($pageNumber)
    function getAllFromPage($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 $hit) {
    yield new MakeModel($hit['make'], $hit['model']);
    $rows[] = new MakeModel($hit['make'], $hit['model']);
    }

    if ($nextpagehasrecords) {
    yield from $this->getAllFromPage(++$pageNumber); // will yield each row to the caller 1-by-1
    $rows = $this->getAllFromPage(++$pageNumber, $rows); // $rows can grow HUGE, it's all in memory
    }
    return $rows;
    }

    // PHP 5
    //
    // PHP 7
    //

    function findAll()
    {
    return getAllFromPage(1, []);
    yield from getAllFromPage(1);
    }

    function getAllFromPage($pageNumber, $rows)
    function getAllFromPage($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) {
    $rows[] = new MakeModel($hit['make'], $hit['model']);
    yield new MakeModel($hit['make'], $hit['model']);
    }

    if ($nextpagehasrecords) {
    $rows = $this->getAllFromPage(++$pageNumber, $rows); // $rows can grow HUGE, it's all in memory
    yield from $this->getAllFromPage(++$pageNumber); // will yield each row to the caller 1-by-1
    }
    return $rows;
    }
  2. Richard Tuin created this gist Mar 21, 2016.
    53 changes: 53 additions & 0 deletions generators.php
    View file
    Original file line number Diff line number Diff line change
    @@ -0,0 +1,53 @@
    <?php

    // Example: Iterate over all resources from a paginated API endpoint
    // PHP 5 vs PHP 7

    //
    // 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
    }
    }

    // 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;
    }