Unserialize function doesn't return array values - php

Question

Hello i want to unserialize an array in order to display the array values.
The way that the array is inserted to my db field is like this.
persons: "a:1:{i:0;s:55:"[{"value":"john: writer"},{"value":"john: producer"}]";}"
and the function i have done but i am not getting any results is this
$adDetails = $stmt->fetchAll(PDO::FETCH_OBJ);
foreach ($adDetails as $feed) {
$feed->logo_pic = SITE_URL . $feed->logo_pic;
$feed->image_path = SITE_URL . $feed->image_path;
$feed->media_pic = SITE_URL . 'mediaPic/' . $feed->media_pic;
$personsArr = unserialize(array($feed->persons));
$personsText = " ";
if(!empty($personsArr)){
list($firstItem) = $personsArr;
foreach ($firstItem as $key => $value) {
foreach ($value as $valueInner) {
$personsText .= $valueInner.", ";
}
}
}
$feed->personsNew = $personsText;
}
$response['success'] = true;
$response['adDetails'] = $adDetails;
echo json_encode($response);
I am getting nothing on personsText although persons is persons: "a:1:{i:0;s:55:"[{"value":"john: writer"},{"value":"john: producer"}]";}"
Any help?

Answer 1

The value in the array is a JSON string, so you need to decode it.
The argument to unserialize() should just be $feed->persons, it shouldn't be in an array.
Instead of the loop, you can use array_column() to get all the value elements, and implode() to combine them with comma delimiters.
$adDetails = $stmt->fetchAll(PDO::FETCH_OBJ);
foreach ($adDetails as $feed) {
$feed->logo_pic = SITE_URL . $feed->logo_pic;
$feed->image_path = SITE_URL . $feed->image_path;
$feed->media_pic = SITE_URL . 'mediaPic/' . $feed->media_pic;
$personsArr = unserialize($feed->persons);
$personsText = " ";
if(!empty($personsArr)){
$firstItem = json_decode($personsArr[0], true);
$personsText = implode(', ', array_column($firstItem, 'value'));
}
$feed->personsNew = $personsText;
}
$response['success'] = true;
$response['adDetails'] = $adDetails;
echo json_encode($response);