Access Values in a JSON Array PHP - php

Question

I am not having any success getting values out of a JSON array object. I am specifically trying to get to geometry->location->lat
Here is what I am doing:
$url='http://maps.googleapis.com/maps/api/geocode/json?address='.$a.'&sensor=false';
$result = file_get_contents($url);
$jsonArr = json_decode($result,true);
echo "Lat: ".$jsonArr['results']['geometry']['location']['lat'];
Here is a print_r() of the JSON returned by Google:
{
"results" : [
{
"address_components" : [
{
"long_name" : "46814",
"short_name" : "46814",
"types" : [ "postal_code" ]
},
{
"long_name" : "Fort Wayne",
"short_name" : "Fort Wayne",
"types" : [ "locality", "political" ]
},
{
"long_name" : "Indiana",
"short_name" : "IN",
"types" : [ "administrative_area_level_1", "political" ]
},
{
"long_name" : "United States",
"short_name" : "US",
"types" : [ "country", "political" ]
}
],
"formatted_address" : "Fort Wayne, IN 46814, USA",
"geometry" : {
"bounds" : {
"northeast" : {
"lat" : 41.08472709999999,
"lng" : -85.26534090
},
"southwest" : {
"lat" : 41.00163510,
"lng" : -85.35540899999999
}
},
"location" : {
"lat" : 41.05472940,
"lng" : -85.30328109999999
},
"location_type" : "APPROXIMATE",
"viewport" : {
"northeast" : {
"lat" : 41.08472709999999,
"lng" : -85.26534090
},
"southwest" : {
"lat" : 41.00163510,
"lng" : -85.35540899999999
}
}
},
"types" : [ "postal_code" ]
}
],
"status" : "OK"
}

Answer 1

The results are returned in an array. Get the first element and you're done. However you should make sure that you actually have at least one element in the results array.
echo "Lat: " . $jsonArr['results'][0]['geometry']['location']['lat'];