MemeCitations Instagram Fix

memecitations.php

<?php
header('Content-Type: application/json');
if(!empty($_POST)) {
    $post = $_POST;
    
    $post = json_decode($post, true);

    $data = file_get_contents('https://api.instagram.com/oembed/?url=' . $post['url']);
    $data = json_decode($data, true);

    $dom = new DomDocument();
    @$dom->loadHTML($data['html']);

    $dates = $dom->getElementsByTagName('time');
    foreach($dates as $date) {
        $date = $date->getAttribute('datetime');
        break;
    }

    $date = date('j M Y', strtotime($date));

    $citation = 'MLA Citation:
    @' . $data['author_name'] . ' "' . substr($data['title'], 0, 10) . '..." Instagram, ' . $date . ', ' . $post['url'] . ' #MemeCitations';

    $response = [
        'success' => true,
        'citation' => $citation
    ];

    $response = json_encode($response);

    print_r($response);

} else {
    echo '{"error":{"type":"miss"}}';
}

I'm not sure what you've built the /api/create part of your site with. Wappalyzer says that it's PHP, so that's what I'm going to go with.