Foreach 循环没有按预期附加到数组 [关闭]

Question

我希望从 API 中获取一些数据并将其构建为一个多维数组，然后我可以循环并在 Twig 模板中呈现出来。我的代码几乎有效。最终数组

$forecastArr

仅包含

foreach

的最后一次迭代，而不是包含我认为

array_push(

) 会实现的每次迭代。

这是被退回的东西。理想情况下，这个最终数组将包含几天的天气数据，而不是仅包含最终迭代。

array (
  0 => 
  array (
    'period' => 'Wednesday',
    'image' => 'https://forecast.weather.gov/newimages/medium/few.png',
    'text' => 'Sunny, with a high near 87.',
  ),
)

我的印象是我的迭代 是 工作，但我正在覆盖我的最终数组而不是附加它。

这是我目前正在运行的代码。我已经尝试了几个不同的调整，但这对我来说是伪代码方面最有意义的，所以我一直回到它......

$forecast = weatherConditions(); // The API data    
                
$dayCount = 0;

foreach ( $forecast['time']['startPeriodName'] as $key => $period ) {
    $forecastArr = array(); // Create the final array

    // The idea here is that for every instance of `startPeriodName`, I create an array of relevant data, stored as $periodArr.
    $periodArr = array( 
       "period"  => $period,
       'image'   => $forecast['data']['iconLink'][ $dayCount ],
       'text'    => $forecast['data']['text'][ $dayCount ]
    );
    
    // I then take that $periodArr and push it into the main array, so I should end up with an array of arrays.         
    array_push( $forecastArr, $periodArr );
        
    $dayCount++;
}       

Answer 1

你正在（重新）初始化

$forecastArr

数组inside循环而不是在迭代之前做一次：

$forecastArr = array(); // Moved OUTSIDE the iteration
foreach ( $forecast['time']['startPeriodName'] as $key => $period ) {
    // The idea here is that for every instance of `startPeriodName`, 
    // I create an array of relevant data, stored as $periodArr.
    $periodArr = array( 
       "period"  => $period,
       'image'   => $forecast['data']['iconLink'][ $dayCount ],
       'text'    => $forecast['data']['text'][ $dayCount ]
    );
    
    // I then take that $periodArr and push it into the main array, 
    // so I should end up with an array of arrays.         
    array_push( $forecastArr, $periodArr );
        
    $dayCount++;
}