Convert and save image in webp from raw base64 string in Laravel

base64-to-webp.php

<?php

use Illuminate\Support\Str;

function save_base64_to_webp(
    $string,
    $file_directory,
    $file_name = null,
    $disk_driver = 'local'
)
{
    $handle = fopen("php://memory", "rw");
    $decoded_image = imagecreatefromstring(
        base64_decode($string)
    );
    imagepalettetotruecolor($decoded_image);
    imagewebp($decoded_image, $handle, 75);
    imagedestroy($decoded_image);

    $file_name = $file_name ?? Str::random(15);
    $file_path = "{$file_directory}{$file_name}.webp";
    Storage::disk($disk_driver)->put($file_path, $handle);
    fclose($handle);

    return $file_path;
}