Google 将里程函数映射到两个地址之间的 return 里程

Question

对于每个循环停止工作。

public static function getMiles($to, $from)
{

    $from = urlencode($from);
    $to = urlencode($to);
    $data = file_get_contents("https://maps.googleapis.com/maps/api/distancematrix/json?units=imperial&origins=$from&destinations=$to&key=MyKey");

    $time = 0;
    $distance = 0;

    /* return as an object for easier notation */
    $json=json_decode( $data, false );
    $origins = $json->origin_addresses;
    $destinations=$json->destination_addresses;

    /*  if there are multiple rows, use a loop and `$rows[$i]` etc */
    $elements=$json->rows[0]->elements;

    foreach( $elements as $i => $obj ){
    } 
    //extract the mileage as meters
    $miles = $obj->distance->value;

    //converting the meters to miles
    $distance= round(($miles * '0.000621371192'), 1);
    //returning miles
    return $distance;

}

最终结果是 return 2 个地址之间的里程数。错误消息是“'Invalid argument supplied for foreach()'”。

Answer 1

你的功能在我这边没有问题。当我从距离矩阵 API 请求中混淆我的 API 密钥时，我实际上只得到这个 "Invalid argument supplied for foreach()" 错误。

使用有效 API 键（替换 "YOUR_KEY"）尝试运行下面的代码：

function getMiles($to, $from)
{
    $from = urlencode($from);
    $to = urlencode($to);
    $data = file_get_contents("https://maps.googleapis.com/maps/api/distancematrix/json?units=imperial&origins=$from&destinations=$to&key=YOUR_KEY");

    $time = 0;
    $distance = 0;

    /* return as an object for easier notation */
    $json=json_decode( $data, false );
    $origins = $json->origin_addresses;
    $destinations=$json->destination_addresses;
    /*  if there are multiple rows, use a loop and `$rows[$i]` etc */
    $elements=$json->rows[0]->elements;

    foreach( $elements as $i => $obj ){
    } 
    //extract the mileage as meters
    $miles = $obj->distance->value;

    //converting the meters to miles
    $distance= round(($miles * '0.000621371192'), 1);
    //returning miles
    return $distance;
}

echo "\nMiles: " . getMiles("paris,france", "berlin,germany");

你得到的输出应该是Miles: 659。

我建议您通过 these guides 仔细检查您的密钥、项目和结算帐户是否信誉良好。

希望对您有所帮助！

Answer 2

好吧，这是我的错。经过进一步挖掘，我能够确定我的信用卡已过期。重置我的到期日期，代码又能正常工作了。感谢 Muhammad Omer Aslam 帮助我指出正确答案。

Google 将里程函数映射到两个地址之间的 return 里程

Google map mileage function to return mileage between two addresses

php

google-maps

yii2

google-distancematrix-api