how to access json file fields [duplicate] - php

Question

This question already has answers here:
How to loop through PHP object with dynamic keys [duplicate]
(16 answers)
Closed 5 years ago.
{
"took" : 363,
"timed_out" : false,
"num_reduce_phases" : 15,
"_shards" : {
"total" : 7195,
"successful" : 7195,
"failed" : 0
},
"hits" : {
"total" : 35672,
"max_score" : 0.0,
"hits" : [ ]
},
"aggregations" : {
"2" : {
"doc_count_error_upper_bound" : 54,
"sum_other_doc_count" : 1463,
"buckets" : [
{
"key" : "ふるさと納税",
"doc_count" : 30376
}
]
}
}
}
This is the json file . I need to access the doc_count field.
I am trying to do it like this
$trend_words = json_decode($file);
$aggregations = $trend_words->aggregations;
$buckets = $aggregations->{2}->buckets->{0};
But its not working.
Can someone help.

Answer 1

$trend_words = json_decode($file,true);
$aggregations = $trend_words['aggregations']['2']['buckets'][0]['doc_count'];
print_r($aggregations)
You should use ,true otherwise you will get an stdclass object and not an array you want.

Answer 2

try this
<?php
$sJson = '
{
"took" : 363,
"timed_out" : false,
"num_reduce_phases" : 15,
"_shards" : {
"total" : 7195,
"successful" : 7195,
"failed" : 0
},
"hits" : {
"total" : 35672,
"max_score" : 0.0,
"hits" : [ ]
},
"aggregations" : {
"2" : {
"doc_count_error_upper_bound" : 54,
"sum_other_doc_count" : 1463,
"buckets" : [
{
"key" : "ふるさと納税",
"doc_count" : 30376
}
]
}
}
}
';
$aJson = json_decode($sJson, true);
echo $aJson['aggregations'][2]['buckets'][0]['doc_count'];
https://3v4l.org/kHfdo

Answer 3

Here is the answer, As the buckets increases you need to have a loop through to read all the buckets
$trend_words = json_decode($file, true);
$aggregations = $trend_words['aggregations'][2];
$buckets = array();
foreach($aggregations as $element)
$buckets[] = $element['buckets'];
print_r($buckets);

Answer 4

Make Json to array and try
$trend_words = json_decode($file, true);
$aggregations = $trend_words['aggregations'];
$buckets =$aggregations[2]['buckets'][0];