如何将数据导入数组？

I saved the result of a CURL expression into variable $data. When I print this value using print_r($data), It gives me like that

stdClass Object
(
    [zip_codes] => Array
        (
            [0] => stdClass Object
                (
                    [zip_code] => 10015
                    [distance] => 0.521
                )

            [1] => stdClass Object
                (
                    [zip_code] => 10079
                    [distance] => 0.521
                )

            [2] => stdClass Object
                (
                    [zip_code] => 10094
                    [distance] => 0.521
                )

I want only zip_code into an array, Please help me how do I get only zip_code into an array. Thanks

Try something like :

foreach($data->zip_codes as $zipObj)
{
  echo $zipObj->zip_code;
}

This will loop over the zip codes array and output the relevant value.

So use array_map():

$result = array_map(function($x)
{
   return $x->zip_code
}, $obj->zip_codes);

Try something like this: First iterate trought the collection of objects an get the zip code property and add it to an array

<?php
    $result = array();
    $zipCodes = $data->zip_codes;
    for($i = 0; $i < sizeOf($zipCodes); $i++){
      $result[] = $zipCodes->zip_code;
    }
    ?>

You can use array_map, this function allows you to apply a callback to the array.

$zip_codes = array_map(function($i) { return $i->zip_code; }, $data->zip_codes);