如何使用 PHP 遍历 JSON 数组
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How to loop through JSON array using PHP
提问by user2170611
My PHP code:
我的PHP代码：
$obj = json_decode($data);
print $obj->{'name'};
While it works for non-arrays, I can't for the life of me figure out how to print all the values within the "Reviews" Array.
虽然它适用于非数组，但我终生无法弄清楚如何打印“评论”数组中的所有值。
What I would like to do is to loop through this response, probably with forreach(), resulting in a list containing the rating and excerpt for each review in the response.
我想要做的是循环遍历此响应，可能使用 forreach()，从而生成一个列表，其中包含响应中每个评论的评分和摘录。
Any guidance / direction is greatly appreciated..
非常感谢任何指导/方向..
Below is the JSON I'm working with. (it is the response from the Yelp API).
下面是我正在使用的 JSON。（这是来自 Yelp API 的响应）。
{
"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"
}
}
回答by eliot
You are probably having trouble because reviews is an array and you are trying to access it as a JSON object.
您可能遇到了问题，因为评论是一个数组，而您正试图将其作为 JSON 对象访问。
$obj = json_decode($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>";
}
回答by ceruleus
I'm not sure what exactly you want but I guess you want print it just for debugging right now. You can try with print_r($obj);and var_dump($obj);- they must print something, especially var_dump().
When you see the data, you can easily edit function a little bit, so you can do for instance print_r($obj->reviews)or print_r($obj['reviews']), depending if $objis object or array.
我不确定您到底想要什么，但我想您现在只想打印它以进行调试。您可以尝试使用print_r($obj);and var_dump($obj);- 他们必须打印一些东西，尤其是var_dump(). 当您看到数据时，您可以轻松地稍微编辑函数，因此您可以执行例如print_r($obj->reviews)或print_r($obj['reviews'])，具体取决于$obj是对象还是数组。
回答by Tim
You can use var_dump or print_r.
您可以使用 var_dump 或 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'];
}
?>
回答by D.Snap
Here using objects example (to read reviews...raiting):
这里使用对象示例（阅读评论...raiting）：
$jsonObject = json_decode($data);
foreach ($jsonObject->reviews as $data) {
echo $data->rating;
}
