如何使用 PHP 将多个数组合并为单个数组

debugcn 发表于 Dev

高拉夫kb

我从数据库中查询地址列，并将该多个地址传递给 Google Geocoder API，并将该纬度和经度结果存储在$coordinate变量中。当我var_export($coordinate);得到以下格式的输出时：

'[19.0759837,72.8776559]''[47.6062095,-122.3320708]''[12.9715987,77.5945627]'

但是在使用时，print_r(array($variablename));我以这种格式获得输出：

Array
(
 [0] => [19.0759837,72.8776559]
)
Array
(
  [0] => [47.6062095,-122.3320708]
)
Array
(
  [0] => [12.9715987,77.5945627]
)

但我希望输出是这样的单个数组。

Array
(
 [0] => [19.0759837,72.8776559],
 [1] => [47.6062095,-122.3320708],
 [2] => [12.9715987,77.5945627]
)

这是php代码：

<?php 
    // database connection code and query to fetch address column the database and pass address to geocode()
header("content-type: application/json");
        header('Access-Control-Allow-Origin: *');
        $config = parse_ini_file('./config.ini');
        $connect = mysqli_connect('localhost',$config['username'],$config['password'],$config['dbname']);
        if (mysqli_connect_errno())
                {
                  echo "Failed to connect to MySQL: " . mysqli_connect_error();
                }
                $ordertracker = mysqli_query($connect, "select address from ordertracker");

                if (!$ordertracker)
                {
                    echo "Error fetching results: " . mysqli_error();

                }

        $address=array();
        while($row = mysqli_fetch_assoc($ordertracker)) {
             $address= $row['address'];
              geocode($address);  
        }
    function geocode($address)
     {
                $address = urlencode($address);
                $url = "http://maps.googleapis.com/maps/api/geocode/json?address=$address&sensor=false";
                $geocode=file_get_contents($url);
                $output= json_decode($geocode);
                $lat = $output->results[0]->geometry->location->lat;
                $long = $output->results[0]->geometry->location->lng;
                $coordinate = "[" . $lat . "," . $long . "]";  
                var_export($coordinate);  
      }
    ?>

特里科特

如果你想要一个数组，那么你不应该使用字符串文字和连接来构建它，因为这会产生一个字符串。

相反，让您的函数生成一个具有两个值（纬度和经度）的数组，并将这些对附加到主循环中的主数组中：

$address = [];
while($row = mysqli_fetch_assoc($ordertracker)) {
    $address[] = geocode($row['address']);
}
print_r($address);

function geocode($address) {
    $address = urlencode($address);
    $url = "http://maps.googleapis.com/maps/api/geocode/json?address=$address&sensor=false";
    $geocode = file_get_contents($url);
    $output= json_decode($geocode);
    $lat = $output->results[0]->geometry->location->lat;
    $long = $output->results[0]->geometry->location->lng;
    $coordinate = [$lat, $long];  
    return $coordinate;
}

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