PHP: get value from JSON String? [duplicate] - php

Question

This question already has answers here:
How to extract and access data from JSON with PHP?
(1 answer)
How can I access an array/object?
(6 answers)
Closed 5 years ago.
I have a string that looks like this:
[
{
"id":"2",
"price":"39.99",
"timeStamp":"1506264307167",
"quantity":"1",
"colours":"Green",
"pid":"234234234"
},
{
"id":"2",
"price":"39.99",
"timeStamp":"1506264311757",
"quantity":"1",
"colours":"Blue",
"pid":"234234234"
}
]
I need to get the id from this JSON string using PHP.
So I tried this:
$details = '[
{
"id":"2",
"price":"39.99",
"timeStamp":"1506264307167",
"quantity":"1",
"colours":"Green",
"pid":"234234234"
},
{
"id":"2",
"price":"39.99",
"timeStamp":"1506264311757",
"quantity":"1",
"colours":"Blue",
"pid":"234234234"
}
]';
$details = json_encode($details, true);
$array = json_decode($details, true);
$oid = $array['id'];
echo $oid;
The code above is in a while loop so the echo $oid should echo the id
multiple times.
anyway, the code above only prints this:
[
[
and when i look in the error log, i see this error:
PHP Warning: Illegal string offset 'id'
Could someone please advice on this issue?
Thanks in advance.

Answer 1

<?php
$details = '[
{
"id":"2",
"price":"39.99",
"timeStamp":"1506264307167",
"quantity":"1",
"colours":"Green",
"pid":"234234234"
},
{
"id":"2",
"price":"39.99",
"timeStamp":"1506264311757",
"quantity":"1",
"colours":"Blue",
"pid":"234234234"
}
]';
$array = json_decode($details, true);
for($i=0;$i<count($array);$i++){
$idValue = $array[$i]['id'];
echo $idValue;
}
You need a loop to go through all the nested arrays and get all the ids.

Answer 2

Try the following code:
<?php
$details = '[
{
"id":"2",
"price":"39.99",
"timeStamp":"1506264307167",
"quantity":"1",
"colours":"Green",
"pid":"234234234"
},
{
"id":"2",
"price":"39.99",
"timeStamp":"1506264311757",
"quantity":"1",
"colours":"Blue",
"pid":"234234234"
}
]';
$array = json_decode($details, true);
$oid = $array[0]['id'];
echo $oid;
Instead of encoding json string into json. Decode it to PHP array directly. And use [0] index to get first Json Object