How to get a fields particular value of JSON in Codeigniter Php? - php

Question

I'm using Google Map Api, and getting the result in JSON form and the output result is
{
"results" : [
{
"address_components" : [
{
"long_name" : "Plot No 1",
"short_name" : "Plot No 1",
"types" : [ "premise" ]
},
{
"long_name" : "B Block Road",
"short_name" : "B Block Rd",
"types" : [ "route" ]
},
{
"long_name" : "Rangpuri Extention B-Block Pocket-4",
"short_name" : "Rangpuri Extention B-Block Pocket-4",
"types" : [ "political", "sublocality", "sublocality_level_1" ]
},
{
"long_name" : "New Delhi",
"short_name" : "New Delhi",
"types" : [ "locality", "political" ]
},
{
"long_name" : "South West Delhi",
"short_name" : "South West Delhi",
"types" : [ "administrative_area_level_2", "political" ]
},
{
"long_name" : "Delhi",
"short_name" : "DL",
"types" : [ "administrative_area_level_1", "political" ]
},
{
"long_name" : "India",
"short_name" : "IN",
"types" : [ "country", "political" ]
},
{
"long_name" : "110037",
"short_name" : "110037",
"types" : [ "postal_code" ]
}
],
"formatted_address" : "Plot No 1, B Block Rd, Rangpuri Extention B-Block Pocket-4, New Delhi, Delhi 110037, India",
"geometry" : {
"bounds" : {
"northeast" : {
"lat" : 28.5379687,
"lng" : 77.121816
},
"southwest" : {
"lat" : 28.5377897,
"lng" : 77.1217006
}
},
"location" : {
"lat" : 28.5378435,
"lng" : 77.1217523
},
"location_type" : "ROOFTOP",
"viewport" : {
"northeast" : {
"lat" : 28.5392281802915,
"lng" : 77.12310728029151
},
"southwest" : {
"lat" : 28.5365302197085,
"lng" : 77.12040931970849
}
}
},
"partial_match" : true,
"place_id" : "ChIJibjV7RYcDTkRnaFq2Lg__b4",
"types" : [ "premise" ]
}
],
"status" : "OK"
}
and I want to extract lat and lng,under the location object, write now I'm using this code
$mapcontent = json_decode($content,true);
$lat = $mapcontent['results'][0]['geometry']['location']['lat'];
$lng = $mapcontent['results'][0]['geometry']['location']['lng'];
where $content is the output result which mention above,by using the above code and it works but sometimes I'm getting error of undefined offest:0, on $lat and $lng line, is there any other way to retrieve specific data from the JSON Code, I already search on internet but I'm not getting any idea how to resolve this, please help me out

Answer 1

You can write the code like :
$mapcontent = json_decode($content,true);
$resultCount = count($mapcontent['results']);
if( $resultCount > 0 ) {
$lat = $mapcontent['results'][0]['geometry']['location']['lat'];
$lng = $mapcontent['results'][0]['geometry']['location']['lng'];
}
It will work.

Answer 2

$url='your url';
$array = file_get_contents($url);
$array = (array)json_decode($array);

Answer 3

You can also write code like.
$mapcontent = json_decode($content,true);
if( true != empty($mapcontent['results'])) {
$lat = $mapcontent['results'][0]['geometry']['location']['lat'];
$lng = $mapcontent['results'][0]['geometry']['location']['lng'];
}