PHP - 从多个值筛选JSON数组

Question

我想筛选出我解码成数组的JSON响应。我可以过滤一个单一的对象值，在这种情况下，它是$ lsr变量，它是下面注释掉的代码。我现在想要做的是排除包含状态值tx的所有结果。我只是退回或什么也没有。当我在$ reportFeatures上做一个var_dump时，数组是空的，不应该是。我在想什么？

以下是我正在使用的测试JSON响应的示例。它应该删除第一个条目。

{"success":true,"error":null,"response":[{"id":"59c84e0bdb6be875458b45fd","loc":{"long":-100.73,"lat":38.47},"report":{"code":"G","type":"thunderstorm wind gust","name":"1 mi SSW Grigston","detail":{"text":60,"windSpeedKTS":52,"windSpeedKPH":97,"windSpeedMPH":60},"reporter":"public","comments":"Dime size hail also occurred at this location.","timestamp":1506296700,"cat":"wind","dateTimeISO":"2017-09-24T18:45:00-05:00","datetime":"2017-09-24T18:45:00-05:00","wfo":"ddc"},"place":{"name":"grigston","state":"tx","county":"scott","country":"us"},"profile":{"tz":"America\/Chicago"}},{"id":"59c84703db6be8151f8b45fd","loc":{"long":-100.79,"lat":38.37},"report":{"code":"G","type":"thunderstorm wind gust","name":"7 mi E Shallow Water","detail":{"text":68,"windSpeedKTS":59,"windSpeedKPH":109,"windSpeedMPH":68},"reporter":"public","comments":"Measured 68 mph with a home anemometer.","timestamp":1506296640,"cat":"wind","dateTimeISO":"2017-09-24T18:44:00-05:00","datetime":"2017-09-24T18:44:00-05:00","wfo":"ddc"},"place":{"name":"shallow water","state":"ks","county":"scott","country":"us"},"profile":{"tz":"America\/Chicago"}},{"id":"59c84703db6be8151f8b45fe","loc":{"long":-100.79,"lat":38.37},"report":{"code":"H","type":"hail","name":"7 mi E Shallow Water","detail":{"text":1,"hailIN":1,"hailMM":25.4},"reporter":"public","comments":"Reported most marble with some quarter sized hail.","timestamp":1506296640,"cat":"hail","dateTimeISO":"2017-09-24T18:44:00-05:00","datetime":"2017-09-24T18:44:00-05:00","wfo":"ddc"},"place":{"name":"shallow water","state":"ks","county":"scott","country":"us"},"profile":{"tz":"America\/Chicago"}},{"id":"59c848a8db6be82e288b4631","loc":{"long":-100.75,"lat":38.4},"report":{"code":"H","type":"hail","name":"6 mi SSW Grigston","detail":{"text":0.75,"hailIN":0.75,"hailMM":19.05},"reporter":"trained spotter","comments":"","timestamp":1506296400,"cat":"hail","dateTimeISO":"2017-09-24T18:40:00-05:00","datetime":"2017-09-24T18:40:00-05:00","wfo":"ddc"},"place":{"name":"grigston","state":"ks","county":"scott","country":"us"},"profile":{"tz":"America\/Chicago"}},{"id":"59c83ffadb6be81b788b4602","loc":{"long":-94.13,"lat":46.33},"report":{"code":"D","type":"thunderstorm wind damage","name":"3 mi ESE Brainerd","detail":{"text":0},"reporter":"trained spotter","comments":"Numerous 6-8\" tree branches down along with a few stripped pine trees. time estimated from radar.","timestamp":1506288480,"cat":"wind","dateTimeISO":"2017-09-24T16:28:00-05:00","datetime":"2017-09-24T16:28:00-05:00","wfo":"dlh"},"place":{"name":"brainerd","state":"mn","county":"crow wing","country":"us"},"profile":{"tz":"America\/Chicago"}}]} 

这是我正在使用并且一直在尝试的代码。为了简洁起见，我没有在最后通过循环发布。

$json = file_get_contents($url); // put the contents of the file into a variable 
$result = json_decode($json, true); 
$features=$result['response']; 

// Lets filter the response to get only the values we want 
$lsr = array(
    'hurricane', 
    'tropical storm', 
    'storm surge', 
    'water spout', 
    'tornado', 
    'funnel cloud', 
    'wall cloud', 
    'thunderstorm wind damage', 
    'thunderstorm wind gust', 
    'hail', 
    'lightning', 
    'flash flood', 
    'flood', 
    'blizzard', 
    'heavy snow', 
    'snow', 
    'sleet', 
    'freezing rain', 
); 
/* 
// filter features, remove those which are not of any of the desired event types 
$reportFeatures = array_filter($features, function(array $feature) use ($lsr) { 
    $reportType = $feature['report']['type']; 

    return in_array($reportType, $lsr); 
}); 
*/ 

// Lets filter the response to get the values we dont want 
$ignoreState = 'tx'; 

// filter features, remove those which are not of any of the desired event types 
// and also remove those from $ignoreState 
$reportFeatures = array_filter($features, function (array $feature) use ($lsr, $ignoreState) { 
    $reportType = $feature['report']['type']; 
    $state = $feature['place']['state']; 
    $isValidEvent = in_array($eventType, $lsr); 

    return $ignoreState && $isValidEvent; 
}); 

//var_dump($reportFeatures); 

foreach($reportFeatures as $report) { 

    $reportID = $report['id']; 
    $type = $report['report']['type']; 
    $city = $report['report']['name']; 
    $county = $report['place']['county']; 
    $County = ucwords($county); 
    $state = $report['place']['state']; 
    $State = strtoupper($state); 
    $mag = $report['report']['detail']['text']; 
    $reporter = $report['report']['reporter']; 
    $Reporter = ucwords($reporter); 
    $comments = $report['report']['comments']; 

Answer 1

我想过滤的回调应该是：

$reportFeatures = array_filter($features, function (array $feature) use ($lsr, $ignoreState) { 
    // check if event is valid 
    $isValidEvent = in_array($feature['report']['type'], $lsr); 
    // check if state is not equal to `$ignoreState` 
    $notIgnoredState = $feature['place']['state'] != $ignoreState; 

    return $notIgnoredState && $isValidEvent; 
});