javascript - I don't know how to read items from this array or object?

This question already has an answer here:

Answer

Solution:

Here is some simplified code, take your stringified json, turn it into a php object, and then join the array and dump it to a text file.

<?php
if(isset($_POST['news'])){
    $submission = $_POST['searcharray'];
    $json       = json_encode($submission);
    if($json !== false) {
        $json_ob = json_decode($submission);
        file_put_contents('data.txt', implode('&', $json_ob->searcharray));
    }
}

?>
<html>
    <head>
        <script>
            searcharray = ["yemen", "america", "franc", "germany"];
            const json = JSON.stringify({searcharray});
            const formData = new FormData(); 
            formData.append('searcharray', json); 
            formData.append('news', 'true');
            var request = new XMLHttpRequest();
            request.open("POST", "");
            request.send(formData);
        </script>
    </head>
    <body>
    <body>    
</html>

Output of the data.txt after submission:

yemen&america&franc&germany

The POST submission looks like this:

{"searcharray":["yemen","america","franc","germany"]}

The first value could be accessed thus:

$json_ob->searcharray[0]

You could de-key the JSON object, just turn it into a list:

JSON.stringify(searcharray);

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