如何解决无法使用 foreach() 循环遍历 json 数据
我正在使用 API 来检索 json 文件，然后我想将其回显到我的网页上。
我可以单独回显数据，就像这样：
echo $json2['result']['reviews'][0]['author_name'];
但是，一旦我尝试使用 foreach loop() 遍历数据，就会出现错误：
Warning: Array to string conversion in C:\xampp\htdocs\cw\tester.PHP on line 36
Array
Warning: Attempt to read property "result" on array in C:\xampp\htdocs\cw\tester.PHP on line 38
Warning: Attempt to read property "reviews" on null in C:\xampp\htdocs\cw\tester.PHP on line 38
Warning: foreach() argument must be of type array|object,null given in C:\xampp\htdocs\cw\tester.PHP on line 38
我确信它很简单，因为 json 并不太复杂，但我无法让它工作，因为我不明白我的问题是什么。
这是我尝试创建的 for 循环：
foreach ($json2->result->reviews as $my_data){
foreach ($my_data -> author_name as $names){
echo $names . '<br>';
}
}
{
"html_attributions" : [],"result" : {
"address_components" : [
{
"long_name" : "Antrim Road","short_name" : "Antrim Rd","types" : [ "route" ]
},{
"long_name" : "Belfast","short_name" : "Belfast","types" : [ "locality","political" ]
},{
"long_name" : "Newtownabbey","short_name" : "Newtownabbey","types" : [ "postal_town" ]
},"types" : [ "administrative_area_level_2",{
"long_name" : "northern Ireland","short_name" : "northern Ireland","types" : [ "administrative_area_level_1",{
"long_name" : "United Kingdom","short_name" : "GB","types" : [ "country",{
"long_name" : "BT36 7PN","short_name" : "BT36 7PN","types" : [ "postal_code" ]
}
],"adr_address" : "\u003cspan class=\"street-address\"\u003eAntrim Road\u003c/span\u003e,\u003cspan class=\"extended-address\"\u003eBelfast\u003c/span\u003e,\u003cspan class=\"locality\"\u003eNewtownabbey\u003c/span\u003e \u003cspan class=\"postal-code\"\u003eBT36 7PN\u003c/span\u003e,\u003cspan class=\"country-name\"\u003eUK\u003c/span\u003e","business_status" : "OPERATIONAL","formatted_address" : "Antrim Rd,Belfast,Newtownabbey BT36 7PN,UK","formatted_phone_number" : "028 9077 6277","geometry" : {
"location" : {
"lat" : 54.6577821,"lng" : -5.943665699999999
},"viewport" : {
"northeast" : {
"lat" : 54.65913108029149,"lng" : -5.942316719708497
},"southwest" : {
"lat" : 54.6564331197085,"lng" : -5.945014680291502
}
}
},"icon" : "https://maps.gstatic.com/mapfiles/place_api/icons/v1/png_71/generic_business-71.png","international_phone_number" : "+44 28 9077 6277","name" : "Belfast Zoo","photos" : [
{
"height" : 1243,"html_attributions" : [
"\u003ca href=\"https://maps.google.com/maps/contrib/111863060002111236588\"\u003eBelfast Zoo\u003c/a\u003e"
],"photo_reference" : "ATtYBwLPDngDqoLqrE-KZnFdp94V6uH2rOa-x4B2A7GVXOKD7raGPWiKtjNeDKEDpXrvbl9hPrjiE82RrHy-WFTyaim51I7lE4f_gQavJlNtEcI8QCyNlgXdNbdubkFBTwOQpYQojvtcLavYu6RIHmiAQA8DnO3IQpX7pd3OIUC2drtfN85w","width" : 1776
},{
"height" : 2988,"html_attributions" : [
"\u003ca href=\"https://maps.google.com/maps/contrib/100936618118839321951\"\u003eAmanda Lewis\u003c/a\u003e"
],"photo_reference" : "ATtYBwI4nDTtt9wy2B18qwRhRrAd90Z24tQL5KpKDYw8UqHLbmxeazhIQzG0B72gNJ5qASZT3lVzw9IQ8789ovoqmfvhBU9biLUSjYWDFZRUz-UBIAvc-7ma69soGhze5ysjzg9K67e14axna-npfP0A64cc2v5pHO14hph0l8ubrovb4tnL","width" : 5312
},"html_attributions" : [
"\u003ca href=\"https://maps.google.com/maps/contrib/116390912159770135890\"\u003eBeti Na\u003c/a\u003e"
],"photo_reference" : "ATtYBwIBVFK2xPo7SoaT35yaxTvJo27782EJWXiLAlB7MuA3XHAbRd_DfJ7T6ZBZLVmpeyCO7GgyF06kkPtDak58HlGEup-IAyGXoCS6byofWqzqjjwvPx_FmN5tY2XfSU4Ocvs-UYyxnCA9T0q00egfJCL92XTMLHib5TDqQeAQY3r6pMKS",{
"height" : 9248,"html_attributions" : [
"\u003ca href=\"https://maps.google.com/maps/contrib/106644795451552578979\"\u003eMatthew mcmullan\u003c/a\u003e"
],"photo_reference" : "ATtYBwL1S6nVnplt3cRoJgsifwFdNo6fgcgd2GLpJqNuYvCdWBCMkvXNcFMiQ07OOzptgfsiYedU0xgUzG5D_VRXVPddqwgZQa0A4uBXoX43GFAU9rh3AB0u8MKY0M_1FB56GwVBetoT7rlShjLS5_KI1hOowB4ZdptMI_twgQwkzcEmIkg0","width" : 6936
},"photo_reference" : "ATtYBwKFyQSrzrvX0X4tDu26wN10cgbo5w6JIlRQTWC4ttbAboV7ICKCuLWVazvoTdpBT1UpKGTsQHyVoZhC5f-1CBYtwZQCuTrOyGy8at0zsHW9ENLjq5q_zvB9LCHdgCUWMgWnBRzlYonNYCkPzRu-qORlJSX8X66-miqdbtXUFxMz-o3H",{
"height" : 3823,"html_attributions" : [
"\u003ca href=\"https://maps.google.com/maps/contrib/116284097622909280304\"\u003eBrian Cunningham\u003c/a\u003e"
],"photo_reference" : "ATtYBwJwf5rfaz8OqJ4AbQMgxKU3rKUf-4O6_Z6ME6vuZ5X6zgaSKdqvN_IxHuYqZIZWtPBlTFeYs4AzcH9oXWHQjrKdX5nGXelND-OoMe_Srp5pgGwmEr2f3TVQFktQAyv3NBA5l4JcBiKlb9wR_EueGaiEI6aM6VQobg6ab8CTXTGQclB7","width" : 5735
},{
"height" : 4000,"html_attributions" : [
"\u003ca href=\"https://maps.google.com/maps/contrib/109005734355336105418\"\u003eWilliam Young\u003c/a\u003e"
],"photo_reference" : "ATtYBwKlMZ9zSIi-AkC5M9nyMiOo3ly_-NtKqrFpz5A-_YFXyEc-Mn9APluh__SgUHPwgbNkZ27BjUYtK2Deb5MHax6yICyIC9RzZGOD4AY_F1pSPUXwwkMwuW66JMx_ZsgW-GpkJKo9m89cua_mFBOfwrvxSpm66lwfpuQUsUz2fibwMKEQ","width" : 2723
},{
"height" : 3024,"html_attributions" : [
"\u003ca href=\"https://maps.google.com/maps/contrib/100719597211687837516\"\u003eJonathan Kelly\u003c/a\u003e"
],"photo_reference" : "ATtYBwJtrdU_MSyxj8Tzh-wt4fJeI9xnMBJSYus2rCCBRhVb1z64xhreHcSB3-QLRvoVS-XYSYLMheyvtIBdsiNowQaBBHJEAUXcWtpsyvRCYjZU8a9gr9SCJpmo_Wj42CJTxR65cKlGC7i5dEDgsspUqmRZug8B5AtjJ3tuzGUqIBKcNdjz","width" : 4032
},"html_attributions" : [
"\u003ca href=\"https://maps.google.com/maps/contrib/104554106193648036788\"\u003eAjay Jose\u003c/a\u003e"
],"photo_reference" : "ATtYBwJzspaF2TTMtjQYmDJ1_IOJmjH6apJBqz9UJ8POUX1M8airOQja9pZQmrK0SONdFQUgTV-HXFI57sGHFmhetWxMilc5jPU_JcBQT6bhyX6Wqt21tbsV1GM9ySMXbYqMYwlSMBGrP9fiK32hbkxy7A5ecjX88QCYdvVUGqf2hbB8o2bM","photo_reference" : "ATtYBwKqikSfsSEOGFFpSIx1g9O1iDMA3Xn_gf--hC2I9pJCOzDLFMkkLghF9Sr3j6kftlrCx8SSVhEPuZOZXxBOanl3qUh4UA5bvV7QTt3tD5Qje9Tnkd4319h-91dBZshFvd3y8rJb5WK_98bzc06DMIjCtJOPcQ3j1jV0Pr-DpGsPOH0-","width" : 4032
}
],"place_id" : "ChIJ88iCe5inYUGrdeXmfCtuvu4","plus_code" : {
"compound_code" : "M354+4G Belfast,"global_code" : "9C6PM354+4G"
},"rating" : 4.3,"reference" : "ChIJ88iCe5inYUGrdeXmfCtuvu4","reviews" : [
{
"author_name" : "Karen Hoad","author_url" : "https://www.google.com/maps/contrib/103129952317107981705/reviews","language" : "en","profile_photo_url" : "https://lh6.googleusercontent.com/-OkGM8wAyHz8/AAAAAAAAAAI/AAAAAAAAAAA/AMZuucn55YdMQZ1BX6ods-S34cieMQODrg/s128-c0x00000000-cc-rp-mo-ba5/photo.jpg","rating" : 4,"relative_time_description" : "6 months ago","text" : "Great place just not good when raining as the animals stay in","time" : 1599236033
},{
"author_name" : "John Lee Ashworth","author_url" : "https://www.google.com/maps/contrib/116452096322094109908/reviews","profile_photo_url" : "https://lh3.googleusercontent.com/-_ZpK7cdK1NI/AAAAAAAAAAI/AAAAAAAAAAA/AMZuuclmcdFSQNilc5MfhJ3m8rRqzAXO_A/s128-c0x00000000-cc-rp-mo/photo.jpg","rating" : 3,"text" : "love zoos,love animals,hate nothing but steep hills though","time" : 1598880406
},{
"author_name" : "Clare","author_url" : "https://www.google.com/maps/contrib/116989491220973031798/reviews","profile_photo_url" : "https://lh3.googleusercontent.com/a-/AOh14GjK9VEovk8XRG41K9vVtu0SKRIHQdXp6Gb79opr_g=s128-c0x00000000-cc-rp-mo-ba2","rating" : 2,"relative_time_description" : "5 months ago","text" : "Very little animals to see.","time" : 1600628749
},{
"author_name" : "Tammy 102","author_url" : "https://www.google.com/maps/contrib/111672456708879530776/reviews","profile_photo_url" : "https://lh5.googleusercontent.com/-ngjoEXxeE8Q/AAAAAAAAAAI/AAAAAAAAAAA/AMZuucnTOkOTeq8ecWLEVbSs7UBnsUPmSQ/s128-c0x00000000-cc-rp-mo-ba3/photo.jpg","rating" : 5,"text" : "To check prices","time" : 1600610117
},{
"author_name" : "Mark Woonton","author_url" : "https://www.google.com/maps/contrib/106800516570033737478/reviews","profile_photo_url" : "https://lh3.googleusercontent.com/a-/AOh14GgnYZybrP-MTC4U45agdIlXMIFDIuH1v6roRuJAWQ=s128-c0x00000000-cc-rp-mo","text" : "Amazing zoo,so much to see,a great day out","time" : 1599993064
}
],"types" : [ "zoo","tourist_attraction","point_of_interest","establishment" ],"url" : "https://maps.google.com/?cid=17203308759660029301","user_ratings_total" : 2714,"utc_offset" : 0,"vicinity" : "Antrim Road,Belfast","website" : "http://www.belfastzoo.co.uk/"
},"status" : "OK"
}
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