How to get a value from wunderground .json - php

Question

I'm working on json source from wunderground.com. As the example code displayed in the document. I can adjust and work out for some simple format. But I'm stuck with this one. I tried to googled every where but there's no solution.
Here's the sample codes:
<?php
$json_string = file_get_contents("http://api.wunderground.com/api/b8e924a8f008b81e/geolookup/conditions/q/IA/Cedar_Rapids.json");
$parsed_json = json_decode($json_string);
$location = $parsed_json->{'location'}->{'city'};
$temp_f = $parsed_json->{'current_observation'}->{'temp_f'};
echo "Current temperature in ${location} is: ${temp_f}\n";
?>
Well, I need some information like "Cedar Rapids" out of pws/station :
"pws": {
"station": [
{
"neighborhood":"Ellis Park Time Check",
"city":"Cedar Rapids",
"state":"IA",
"country":"US",
"id":"KIACEDAR22",
"lat":41.981174,
"lon":-91.682632,
"distance_km":2,
"distance_mi":1
}
]
}
(You can get all code by clicking this : http://api.wunderground.com/api/b8e924a8f008b81e/geolookup/conditions/q/IA/Cedar_Rapids.json )
Now the questions are:
What is this data called? (array, array in array?)
How could I pull this data out of the line?
Regards,

Answer 1

station is an array within the pws object.
To get the data, you can do something like this:
<?php
$json_string = file_get_contents("http://api.wunderground.com/api/b8e924a8f008b81e/geolookup/conditions/q/IA/Cedar_Rapids.json");
$parsed_json = json_decode($json_string);
$location = $parsed_json->{'location'}->{'city'};
$temp_f = $parsed_json->{'current_observation'}->{'temp_f'};
echo "Current temperature in ${location} is: ${temp_f}\n";
$stations = $parsed_json->{'location'}->{'nearby_weather_stations'}->{'pws'}->{'station'};
$count = count($stations);
for($i = 0; $i < $count; $i++)
{
$station = $stations[$i];
if (strcmp($station->{'id'}, "KIACEDAR22") == 0)
{
echo "Neighborhood: " . $station->{'neighborhood'} . "\n";
echo "City: " . $station->{'city'} . "\n";
echo "State: " . $station->{'state'} . "\n";
echo "Latitude: " . $station->{'lat'} . "\n";
echo "Longitude: " . $station->{'lon'} . "\n";
break;
}
}
?>
Output:
Current temperature in Cedar Rapids is: 38.5
Neighborhood: Ellis Park Time Check
City: Cedar Rapids
State: IA
Latitude: 41.981174
Longitude: -91.682632