PHP - Compress and upload image to Discord via Webhook

discord_webhook_image_compress_upload.php

<?php
// ini_set('display_errors', 1);
// ini_set('display_startup_errors', 1);
// error_reporting(E_ALL);

//from https://stackoverflow.com/questions/65133851/uploading-file-to-discord-with-webhook-in-php
//file is being called by a POST request in my case
//print_r for debugging
//default max size discord accepts is 8MB


echo "<pre>";

$webhookurl = "https://discord.com/api/webhooks/x/x";

print_r($_FILES);

//compress start================================
$compressed_image = false;
$file_name = $_FILES['file']['name'];
$file_size = $_FILES['file']['size'];
$before_compress_size = $_FILES['file']['size'];
$file_type = $_FILES['file']['type'];

if ($file_type == 'image/jpeg') {
    $compressed_image = imagecreatefromjpeg($_FILES['file']['tmp_name']);
} elseif ($file_type == 'image/gif') {
//     $compressed_image = imagecreatefromgif($_FILES['file']['tmp_name']);
} elseif ($file_type == 'image/png') {
    $compressed_image = imagecreatefrompng($_FILES['file']['tmp_name']);
    $file_name = str_replace(".png", ".jpg", $file_name);
} elseif ($file_type == 'image/webp') {
    $compressed_image = imagecreatefromwebp($_FILES['file']['tmp_name']);
    $file_name = str_replace(".webp", ".jpg", $file_name);
} else{
    die("not an image");
}

if($compressed_image !== false){
    imagejpeg($compressed_image, $_FILES['file']['tmp_name'], 85);
    imagedestroy($compressed_image);

    $file_type = "image/jpeg";
    $file_size = filesize($_FILES['file']['tmp_name']);
}
//compress end================================

$json_data = [
    "content" => "filename = $file_name \ntype = $file_type \nsize = " . ($file_size / 1000000) . "MB\n" . ($before_compress_size !== $file_size ? "before compress size = " . ($before_compress_size/1000000) . "MB" : ""),
    "tts" => "false",
    "file" => curl_file_create($_FILES["file"]["tmp_name"], $file_type, $file_name)
];

print_r($json_data);

$curl = curl_init( $webhookurl );
curl_setopt($curl, CURLOPT_TIMEOUT, 10); // 5 seconds
curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 10); // 5 seconds
curl_setopt($curl, CURLOPT_POST, 1);
curl_setopt($curl, CURLOPT_HTTPHEADER, array('Content-Type: multipart/form-data'));
curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($curl, CURLOPT_POSTFIELDS, $json_data);

$returned_fileName = curl_exec( $curl );
curl_close( $curl );

echo "---response---\n";

print_r(json_decode($returned_fileName));

echo "</pre><a href=\"upload.html\">upload.html</a>";