<form method="POST">
    <h3>Editing: ValidatePostSize.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

namespace Illuminate\Foundation\Http\Middleware;

use Closure;
use Illuminate\Http\Exceptions\PostTooLargeException;

class ValidatePostSize
{
    /**
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     *
     * @throws \Illuminate\Http\Exceptions\PostTooLargeException
     */
    public function handle($request, Closure $next)
    {
        $max = $this-&gt;getPostMaxSize();

        if ($max &gt; 0 &amp;&amp; $request-&gt;server('CONTENT_LENGTH') &gt; $max) {
            throw new PostTooLargeException;
        }

        return $next($request);
    }

    /**
     * Determine the server 'post_max_size' as bytes.
     *
     * @return int
     */
    protected function getPostMaxSize()
    {
        if (is_numeric($postMaxSize = ini_get('post_max_size'))) {
            return (int) $postMaxSize;
        }

        $metric = strtoupper(substr($postMaxSize, -1));
        $postMaxSize = (int) $postMaxSize;

        switch ($metric) {
            case 'K':
                return $postMaxSize * 1024;
            case 'M':
                return $postMaxSize * 1048576;
            case 'G':
                return $postMaxSize * 1073741824;
            default:
                return $postMaxSize;
        }
    }
}
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