Retrieving data poin from API response - php

Question

I cobbled together some PHP code that allows me get business data from Yelp API v.3
$postData = "grant_type=client_credentials&".
"client_id=MyClientIDl94gqHAg&".
"client_secret=SomEcoDehIW09e6BGuBi4NlJ43HnnHl4S7W5eoXUkB";
// GET TOKEN
$curl = curl_init();
//set the url
curl_setopt($curl,CURLOPT_URL, "https://api.yelp.com/oauth2/token");
//tell curl we are doing a post
curl_setopt($curl,CURLOPT_POST, TRUE);
//set post fields
curl_setopt($curl,CURLOPT_POSTFIELDS, $postData);
//tell curl we want the returned data
curl_setopt($curl,CURLOPT_RETURNTRANSFER, TRUE);
$result = curl_exec($curl);
if($result){
$data = json_decode($result);
}
// GET RESTAURANT INFO
curl_setopt_array($curl, array(
CURLOPT_URL => "https://api.yelp.com/v3/businesses/north-india-restaurant-san-francisco",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "GET",
CURLOPT_HTTPHEADER => array(
"authorization: Bearer ".$data->access_token
),
));
$response = curl_exec($curl);
$err = curl_error($curl);
//close connection
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}
The output looks like this:
{"id": "north-india-restaurant-san-francisco", "name": "North India Restaurant", "image_url": "https://s3-media2.fl.yelpcdn.com/bphoto/fIgAIMHGfWRF3I0JmagQ7A/o.jpg", "is_claimed": true, "is_closed": false, "url": "https://www.yelp.com/biz/north-india-restaurant-san-francisco?adjust_creative=qG_bVdazAjjAO1l94gqHAg&utm_campaign=yelp_api_v3&utm_medium=api_v3_business_lookup&utm_source=qG_bVdazAjjAO1l94gqHAg", "phone": "[phone]", "display_phone": "[phone]", "review_count": 857, "categories": [{"alias": "indpak", "title": "Indian"}], "rating": 4.0, "location": {"address1": "123 Second St", "address2": "", "address3": "", "city": "San Francisco", "zip_code": "94105", "country": "US", "state": "CA", "display_address": ["123 Second St", "San Francisco, CA 94105"], "cross_streets": ""}, "coordinates": {"latitude": 37.787789124691, "longitude": -122.399305736113}, "photos": ["https://s3-media1.fl.yelpcdn.com/bphoto/howYvOKNPXU9A5KUahEXLA/o.jpg", "https://s3-media2.fl.yelpcdn.com/bphoto/I-CX8nioj3_ybAAYmhZcYg/o.jpg", "https://s3-media3.fl.yelpcdn.com/bphoto/uaSNfzJUiFDzMeSCwTcs-A/o.jpg"], "price": "$$", "hours": [{"open": [{"is_overnight": false, "start": "1000", "end": "2300", "day": 0}, {"is_overnight": false, "start": "1000", "end": "2300", "day": 1}, {"is_overnight": false, "start": "1000", "end": "2300", "day": 2}, {"is_overnight": false, "start": "1000", "end": "2300", "day": 3}, {"is_overnight": false, "start": "1000", "end": "0000", "day": 4}, {"is_overnight": false, "start": "1000", "end": "0000", "day": 5}, {"is_overnight": false, "start": "1000", "end": "2300", "day": 6}], "hours_type": "REGULAR", "is_open_now": true}], "transactions": ["delivery", "pickup"]}
How do I retrieve opening hour on Friday, for example? The day are 0 - 6, Monday - Sunday.

Answer 1

You parse the json data and iterate over the entries:
function getOpeningHoursForDay($data,$day){
$open_hours = $data['hours'][0]['open'];
$n = count($open_hours);
for($i=0;$i<$n;$i++){
if($open_hours[$i]['day']==$day) // check if day matches
return $open_hours[$i];
}
return null; // no matching day found, return null
}
function formatOpeningHour($hour){
return substr($hour,0,2).':'.substr($hour,2); // convert 2300 to 23:00
}
$data = json_decode($response,true);
$friday_hours = getOpeningHoursForDay($data,4);
if(isset($friday_hours)){
echo 'opened ' . formatOpeningHour($friday_hours['start']) . ' - ' .formatOpeningHour($friday_hours['end']);
}else{
echo 'closed';
}