web-dev-qa-db-fra.com

Comment boucler un tableau JSON en utilisant PHP

Mon code PHP: 

$obj = json_decode($data);
print $obj->{'name'};

Bien que cela fonctionne pour les non-tableaux, je ne peux pas comprendre comment imprimer toutes les valeurs dans le tableau "Reviews".

Ce que je voudrais faire est de parcourir cette réponse, probablement avec forreach (), pour obtenir une liste contenant l'évaluation et un extrait pour chaque commentaire de la réponse. 

Toute orientation/direction est grandement appréciée.

Ci-dessous, le JSON avec lequel je travaille. (c'est la réponse de l'API Yelp). 

{
    "is_claimed": true,
    "rating": 4.5,
    "mobile_url": "http://m.Yelp.com/biz/economy-Paint-and-collision-riverside",
    "rating_img_url": "http://s3-media2.ak.yelpcdn.com/assets/2/www/img/99493c12711e/ico/stars/v1/stars_4_half.png",
    "review_count": 19,
    "name": "Economy Paint & Collision",
    "snippet_image_url": "http://s3-media3.ak.yelpcdn.com/photo/ZOzoahw0Go_DEPLvxCaP_Q/ms.jpg",
    "rating_img_url_small": "http://s3-media2.ak.yelpcdn.com/assets/2/www/img/a5221e66bc70/ico/stars/v1/stars_small_4_half.png",
    "url": "http://www.Yelp.com/biz/economy-Paint-and-collision-riverside",
    "reviews": [
        {
            "rating": 3,
            "excerpt": "The Good:\nDennis quoted me a price over the phone about 1 month before I took my wifes 2010 Escalade in for repairs and when I took it in he gave me the...",
            "time_created": 1357010247,
            "rating_image_url": "http://s3-media3.ak.yelpcdn.com/assets/2/www/img/34bc8086841c/ico/stars/v1/stars_3.png",
            "rating_image_small_url": "http://s3-media3.ak.yelpcdn.com/assets/2/www/img/902abeed0983/ico/stars/v1/stars_small_3.png",
            "user": {
                "image_url": "http://s3-media3.ak.yelpcdn.com/photo/mIsU7ugYd88lLA-XL2q1Cg/ms.jpg",
                "id": "V9MDZvEBv-tBTF4YIoc7mg",
                "name": "Sydney H."
            },
            "rating_image_large_url": "http://s3-media1.ak.yelpcdn.com/assets/2/www/img/e8b5b79d37ed/ico/stars/v1/stars_large_3.png",
            "id": "HfOhzLIlJoUKSKU8euclqA"
        },
        {
            "rating": 5,
            "excerpt": "Dennis and his team did an amazing job on the roof of my fiancee's 2002 Acura RSX after years of living by the beach in San Francisco had mostly rusted...",
            "time_created": 1354741952,
            "rating_image_url": "http://s3-media1.ak.yelpcdn.com/assets/2/www/img/f1def11e4e79/ico/stars/v1/stars_5.png",
            "rating_image_small_url": "http://s3-media1.ak.yelpcdn.com/assets/2/www/img/c7623205d5cd/ico/stars/v1/stars_small_5.png",
            "user": {
                "image_url": "http://s3-media3.ak.yelpcdn.com/photo/ZOzoahw0Go_DEPLvxCaP_Q/ms.jpg",
                "id": "kOqCnCjYn0EbAhtH1tfjcw",
                "name": "Jason H."
            },
            "rating_image_large_url": "http://s3-media3.ak.yelpcdn.com/assets/2/www/img/22affc4e6c38/ico/stars/v1/stars_large_5.png",
            "id": "YzZg1LX6zeRaurq9tYUcMw"
        },
        {
            "rating": 5,
            "excerpt": "It's been a year since I had my car painted here, and I gotta say: It still looks just as good as it did when I first picked it up. You would never know...",
            "time_created": 1361043626,
            "rating_image_url": "http://s3-media1.ak.yelpcdn.com/assets/2/www/img/f1def11e4e79/ico/stars/v1/stars_5.png",
            "rating_image_small_url": "http://s3-media1.ak.yelpcdn.com/assets/2/www/img/c7623205d5cd/ico/stars/v1/stars_small_5.png",
            "user": {
                "image_url": "http://s3-media1.ak.yelpcdn.com/photo/58coTtu1x5riHSgFEAQsfw/ms.jpg",
                "id": "kVrW3138d5VL-AZ97wFF4A",
                "name": "Jeanne M."
            },
            "rating_image_large_url": "http://s3-media3.ak.yelpcdn.com/assets/2/www/img/22affc4e6c38/ico/stars/v1/stars_large_5.png",
            "id": "r5WtlQVMXiIMBR6S3N7RZw"
        }
    ],
    "phone": "9517870227",
    "snippet_text": "Dennis and his team did an amazing job on the roof of my fiancee's 2002 Acura RSX after years of living by the beach in San Francisco had mostly rusted...",
    "image_url": "http://s3-media3.ak.yelpcdn.com/bphoto/kodoEcmgHRG61pPaWRndbw/ms.jpg",
    "categories": [
        [
            "Body Shops",
            "bodyshops"
        ],
        [
            "Auto Repair",
            "autorepair"
        ]
    ],
    "display_phone": "+1-951-787-0227",
    "rating_img_url_large": "http://s3-media4.ak.yelpcdn.com/assets/2/www/img/9f83790ff7f6/ico/stars/v1/stars_large_4_half.png",
    "id": "economy-Paint-and-collision-riverside",
    "is_closed": false,
    "location": {
        "city": "Riverside",
        "display_address": [
            "2548 Rubidoux Blvd",
            "Riverside, CA 92509"
        ],
        "geo_accuracy": 8,
        "postal_code": "92509",
        "country_code": "US",
        "address": [
            "2548 Rubidoux Blvd"
        ],
        "coordinate": {
            "latitude": 34.0132437,
            "longitude": -117.3923804
        },
        "state_code": "CA"
    }
}
phpjsonparsingyelp
13
user2170611

Vous rencontrez probablement des problèmes car reviews est un tableau et vous essayez d'y accéder en tant qu'objet JSON.

$obj = json_decode($data, TRUE);
for($i=0; $i<count($obj['reviews']); $i++) {
    echo "Rating is " . $obj['reviews'][$i]["rating"] . " and the excerpt is " . $obj['reviews'][$i]["excerpt"] . "<BR>";
}
18
eliot

Je ne suis pas sûr de ce que vous voulez exactement mais je suppose que vous voulez l'imprimer uniquement pour le débogage pour le moment. Vous pouvez essayer avec print_r($obj); et var_dump($obj); - ils doivent imprimer quelque chose, en particulier var_dump(). Lorsque vous voyez les données, vous pouvez facilement modifier une fonction, de sorte que vous pouvez faire pour exemple print_r($obj->reviews) ou print_r($obj['reviews']), selon si $obj est tableau.

1
ceruleus

Vous pouvez utiliser var_dump ou print_r.

<?php 
$decodedJSON = json_decode($jsonData);

// Put everyting to the screen with var_dump;
var_dump($decodedJSON);

// With print_r ( useful for arrays );
print_r($decodedJSON);

// List just review ratings with foreach;
foreach($decodedJSON['reviews'] as $review){
    echo $review['rating'];
}
?>
0
Tim