Append data to top of the JSON file using PHP [duplicate] - php

Question

This question already exists:
Add new data to top of the JSON file in PHP [duplicate]
Closed 2 years ago.
I am appending data to JSON file using a PHP form, But right now it adds the new data to the bottom in JSON file
I want to add new data to top in JSON file instead of bottom.
Here is My PHP code which i am using to append data to JSON.
<?php
$message = '';
$error = '';
if(isset($_POST["submit"]))
{
if(empty($_POST["name"]))
{
$error = "<label class='text-danger'>Enter Name</label>";
}
else if(empty($_POST["author"]))
{
$error = "<label class='text-danger'>Enter Author</label>";
}
else if(empty($_POST["category"]))
{
$error = "<label class='text-danger'>Enter Thumbnail</label>";
}
else if(empty($_POST["url"]))
{
$error = "<label class='text-danger'>Enter URL</label>";
}
else
{
if(file_exists('wallpaper.json'))
{
$current_data = file_get_contents('wallpaper.json');
$array_data = json_decode($current_data, true);
$extra = array(
'name' => $_POST['name'],
'author' => $_POST["author"],
'category' => $_POST["category"],
'url' => $_POST["url"]
);
$array_data[] = $extra;
$final_data = json_encode($array_data);
if(file_put_contents('wallpaper.json', $final_data))
{
$message = "<label class='text-success'>File Appended Success fully</p>";
}
}
else
{
$error = 'JSON File not exits';
}
}
}
?>
Here is the wallpaper.JSON currently it adds data like this -
[
{
"name": "Old Code",
"author": "Old Code",
"category": "Old Code",
"url": "https://wallpaperaccess.com/full/11851.jpg"
},
{
"name": "New Code",
"author": "New Code",
"category": "New Code",
"url": "https://wallpaperaccess.com/full/11851.jpg"
}
]
I want it like this -
[
{
"name": "New Code",
"author": "New Code",
"category": "New Code",
"url": "https://wallpaperaccess.com/full/11851.jpg"
},
{
"name": "Old Code",
"author": "Old Code",
"category": "Old Code",
"url": "https://wallpaperaccess.com/full/11851.jpg"
}
]

Answer 1

Well You can use use array_reverse in your use case but I would do the other approach
$array_data[] = $extra;
$array_data = array_reverse($array_data);
$final_data = json_encode($array_data);
But a better approach would be to use array_unshift
array_unshift($array_data, $extra);
Source: https://www.php.net/manual/en/function.array-unshift.php