现在已经挣扎太久了，所以请求你的帮助。
我如何使用PHP获取下面这个JSON文件中有三个文章的评论中的文本字段的值。
想要使用foreach循环，感谢帮助我！
{
"address_obj": {
"street1": "Rustenburgerstreet 384",
"street2": null,
"city": "Amsterdam",
"state": "North Holland Province",
"country": "The Netherlands",
"postalcode": "1072 HG",
"address_string": "Rustenburgerstreet 384, 1072 HG Amsterdam The Netherlands"
},
"percent_recommended": null,
"latitude": "52.35162",
"rating": "5.0",
"attraction_types": [
{
"name": "concerts",
"localized_name": "Concerts"
},
{
"name": "blues bars",
"localized_name": "Blues Bars"
},
{
"name": "jazz bars",
"localized_name": "Jazz Bars"
},
{
"name": "bar/ clubs",
"localized_name": "Bars & Clubs"
}
],
"wikipedia_info": null,
"location_id": "3724036",
"review_rating_count": {
"1": "0",
"2": "0",
"3": "1",
"4": "4",
"5": "35"
},
"ranking_data": {
"ranking_string": "#12 of 73 Theater & Concerts in Amsterdam",
"ranking_out_of": "73",
"geo_location_id": "188590",
"ranking": "12",
"geo_location_name": "Amsterdam"
},
"photo_count": "35",
"location_string": "Amsterdam, North Holland Province",
"trip_types": [
{
"name": "business",
"value": "0",
"localized_name": "Business"
},
{
"name": "couples",
"value": "8",
"localized_name": "Couples"
},
{
"name": "solo",
"value": "7",
"localized_name": "Solo travel"
},
{
"name": "family",
"value": "0",
"localized_name": "Family"
},
{
"name": "friends",
"value": "21",
"localized_name": "Friends getaway"
}
],
"web_url": "Attraction_Review-g188590-d3724036-Reviews-m34757-CC_Music_Cafe-Amsterdam_North_Holland_Province.html",
"reviews": [
{
"id": "353301385",
"lang": "en",
"location_id": "3724036",
"published_date": "2016-03-06T05:20:19-0500",
"rating": 5,
"helpful_votes": "0",
"rating_image_url": "img/cdsi/img2/ratings/traveler/s5.0-34757-5.png",
"url": "ShowUserReviews-g188590-d3724036-r353301385-CC_Music_Cafe-Amsterdam_North_Holland_Province.html#review353301385",
"trip_type": "Solo travel",
"travel_date": "2016-02",
"text": "I am a regular visitor of CC Muziekcafé Amsterdam but have felt at home from the very first time. What I like about CC is the atmosphere where great music and hospitality are mixed in the best way...",
"user": {
"username": "Yvon H",
"user_location": {
"name": "Groningen Province, The Netherlands",
"id": "188570"
}
},
"title": "A great place to hear live music and meet all sorts of interesting people, both local and traveling",
"is_machine_translated": false
},
{
"id": "351658487",
"lang": "en",
"location_id": "3724036",
"published_date": "2016-02-28T11:13:12-0500",
"rating": 5,
"helpful_votes": "0",
"rating_image_url": "img/cdsi/img2/ratings/traveler/s5.0-34757-5.png",
"url": "ShowUserReviews-g188590-d3724036-r351658487-CC_Music_Cafe-Amsterdam_North_Holland_Province.html#review351658487",
"trip_type": "Friends getaway",
"travel_date": "2016-02",
"text": "4th time we have been here, another great night at the music cafe, friendly people and a barman who knows how to just put enough swear words in to sound cool",
"user": {
"username": "Francois S",
"user_location": {
"name": "Cardiff, United Kingdom",
"id": "186460"
}
},
"title": "Jazz funk Jam session night Thursday",
"is_machine_translated": false
},
{
"id": "350605184",
"lang": "en",
"location_id": "3724036",
"published_date": "2016-02-24T10:18:57-0500",
"rating": 5,
"helpful_votes": "1",
"rating_image_url": "img/cdsi/img2/ratings/traveler/s5.0-34757-5.png",
"url": "ShowUserReviews-g188590-d3724036-r350605184-CC_Music_Cafe-Amsterdam_North_Holland_Province.html#review350605184",
"trip_type": "Couples",
"travel_date": "2015-09",
"text": "CC muziekcafe is a very cosy place with excellent live music and interaction with the musicians. What really makes the place is the owner Rene who knows a lot about music and now and then even sings...",
"user": {
"username": "ImagineNL",
"user_location": {
"name": "Schagen, The Netherlands",
"id": "609049"
}
},
"title": "Cupid",
"is_machine_translated": false
}
],
答案 0 :(得分：0)
您似乎不需要foreach来获取reviews元素。不确定我是否理解你的问题是正确的，但是你想要这样的事情：
$assoc_json = json_decode($your_json, true);
var_dump($assoc_json['reviews']);
上面将你的json变成一个关联数组，只需访问review元素。
答案 1 :(得分：0)
您可以使用此代码
<?php
$json = <<<EOF
{
"address_obj": {
"street1": "Rustenburgerstreet 384",
"street2": null,
"city": "Amsterdam",
"state": "North Holland Province",
"country": "The Netherlands",
"postalcode": "1072 HG",
"address_string": "Rustenburgerstreet 384, 1072 HG Amsterdam The Netherlands"
},
"percent_recommended": null,
"latitude": "52.35162",
"rating": "5.0",
"attraction_types": [
{
"name": "concerts",
"localized_name": "Concerts"
},
{
"name": "blues bars",
"localized_name": "Blues Bars"
},
{
"name": "jazz bars",
"localized_name": "Jazz Bars"
},
{
"name": "bar/ clubs",
"localized_name": "Bars & Clubs"
}
],
"wikipedia_info": null,
"location_id": "3724036",
"review_rating_count": {
"1": "0",
"2": "0",
"3": "1",
"4": "4",
"5": "35"
},
"ranking_data": {
"ranking_string": "#12 of 73 Theater & Concerts in Amsterdam",
"ranking_out_of": "73",
"geo_location_id": "188590",
"ranking": "12",
"geo_location_name": "Amsterdam"
},
"photo_count": "35",
"location_string": "Amsterdam, North Holland Province",
"trip_types": [
{
"name": "business",
"value": "0",
"localized_name": "Business"
},
{
"name": "couples",
"value": "8",
"localized_name": "Couples"
},
{
"name": "solo",
"value": "7",
"localized_name": "Solo travel"
},
{
"name": "family",
"value": "0",
"localized_name": "Family"
},
{
"name": "friends",
"value": "21",
"localized_name": "Friends getaway"
}
],
"web_url": "Attraction_Review-g188590-d3724036-Reviews-m34757-CC_Music_Cafe-Amsterdam_North_Holland_Province.html",
"reviews": [
{
"id": "353301385",
"lang": "en",
"location_id": "3724036",
"published_date": "2016-03-06T05:20:19-0500",
"rating": 5,
"helpful_votes": "0",
"rating_image_url": "img/cdsi/img2/ratings/traveler/s5.0-34757-5.png",
"url": "ShowUserReviews-g188590-d3724036-r353301385-CC_Music_Cafe-Amsterdam_North_Holland_Province.html#review353301385",
"trip_type": "Solo travel",
"travel_date": "2016-02",
"text": "I am a regular visitor of CC Muziekcafé Amsterdam but have felt at home from the very first time. What I like about CC is the atmosphere where great music and hospitality are mixed in the best way...",
"user": {
"username": "Yvon H",
"user_location": {
"name": "Groningen Province, The Netherlands",
"id": "188570"
}
},
"title": "A great place to hear live music and meet all sorts of interesting people, both local and traveling",
"is_machine_translated": false
},
{
"id": "351658487",
"lang": "en",
"location_id": "3724036",
"published_date": "2016-02-28T11:13:12-0500",
"rating": 5,
"helpful_votes": "0",
"rating_image_url": "img/cdsi/img2/ratings/traveler/s5.0-34757-5.png",
"url": "ShowUserReviews-g188590-d3724036-r351658487-CC_Music_Cafe-Amsterdam_North_Holland_Province.html#review351658487",
"trip_type": "Friends getaway",
"travel_date": "2016-02",
"text": "4th time we have been here, another great night at the music cafe, friendly people and a barman who knows how to just put enough swear words in to sound cool",
"user": {
"username": "Francois S",
"user_location": {
"name": "Cardiff, United Kingdom",
"id": "186460"
}
},
"title": "Jazz funk Jam session night Thursday",
"is_machine_translated": false
},
{
"id": "350605184",
"lang": "en",
"location_id": "3724036",
"published_date": "2016-02-24T10:18:57-0500",
"rating": 5,
"helpful_votes": "1",
"rating_image_url": "img/cdsi/img2/ratings/traveler/s5.0-34757-5.png",
"url": "ShowUserReviews-g188590-d3724036-r350605184-CC_Music_Cafe-Amsterdam_North_Holland_Province.html#review350605184",
"trip_type": "Couples",
"travel_date": "2015-09",
"text": "CC muziekcafe is a very cosy place with excellent live music and interaction with the musicians. What really makes the place is the owner Rene who knows a lot about music and now and then even sings...",
"user": {
"username": "ImagineNL",
"user_location": {
"name": "Schagen, The Netherlands",
"id": "609049"
}
},
"title": "Cupid",
"is_machine_translated": false
}
]
}
EOF;
$array = json_decode($json, true);
$texts = array_map(
function($item) {
return $item['text'];
}, $array['reviews']
);
答案 2 :(得分：0)
一种简单，天真的方法是：
{{1}}
或者你可以在foreach循环中做自己的东西。 This answer为您提供另一种方式（更优雅）来创建＆＃39;结果＆＃39;数组，但既然你要求一个foreach＆＃39;，我想我会加5美分。