How to Append New Data to a JSON File with PHP While Maintaining Structure and Incrementing IDs?

Adding New Data to a JSON File with PHP

You aim to append data to an existing JSON file after a form submission. It's essential to maintain a valid JSON structure and increment the ID with each new entry. To accomplish this:

First, read the existing JSON file and decode its contents into a PHP array:

<code class="php">$inp = file_get_contents('results.json');
$tempArray = json_decode($inp);</code>

Next, add the new data from the form to the array:

<code class="php">array_push($tempArray, $data);</code>

Now, you can encode the updated array back into a JSON string:

<code class="php">$jsonData = json_encode($tempArray);</code>

Finally, write the new JSON string back to the same file:

<code class="php">file_put_contents('results.json', $jsonData);</code>

With this code, you can append new data to the JSON file while ensuring a continues incrementing ID and maintaining the proper JSON structure.

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