Getting an object name within an object in PHP - php

Question

In PHP, I have learned that to be able to get values from an object is to do something like this:
$objResult->{"RESP"}->{"DATA"}->{"F_NAME"}
However, for the data below, how will I be able to get the name "NO_1"?
Since its in an array, I want to be able to extract the data in it, and I'm thinking of getting the name of it first.
{
"SAMPLE": [
{
"NO_1": [
{
"RESULT": [
{
"NUMBER": 1,
"F_NAME": "JOHN",
"L_NAME": "SMITH"
},
{
"NUMBER": 2,
"F_NAME": "WILL",
"L_NAME": "JONES"
}
]
}
]
},
{
"NO_2": [
{
"RESULT": [
{
"NUMBER": 3,
"F_NAME": "MARY",
"L_NAME": "JANE"
},
{
"NUMBER": 4,
"F_NAME": "NEIL",
"L_NAME": "STRONG"
}
]
}
]
}
]
}
Any ideas?

Answer 1

There are two ways to get this. Either you can access direct index or iterate the loop to get all the members. Below is the example you can apply checks for error handling while accessing array indexes.
<?php
$json = '{
"SAMPLE": [
{
"NO_1": [
{
"RESULT": [
{
"NUMBER": 1,
"F_NAME": "JOHN",
"L_NAME": "SMITH"
},
{
"NUMBER": 2,
"F_NAME": "WILL",
"L_NAME": "JONES"
}
]
}
]
},
{
"NO_2": [
{
"RESULT": [
{
"NUMBER": 3,
"F_NAME": "MARY",
"L_NAME": "JANE"
},
{
"NUMBER": 4,
"F_NAME": "NEIL",
"L_NAME": "STRONG"
}
]
}
]
}
]
}';
$arr = json_decode($json,TRUE);
echo $arr['SAMPLE'][0]['NO_1'][0]['RESULT'][0]['F_NAME']; // Direct access
foreach ($arr as $key => $result){ // iterate in loop
foreach ($result as $key => $no) {
foreach ($no['NO_1'] as $key => $res) {
foreach ($res['RESULT'] as $key => $name) {
echo $name['F_NAME'];
}
}
}
}
die;
?>