File manager

<head><title>File manager</title><link rel=stylesheet href=http://unpkg.com/simpledotcss/simple.css></head>
<form method=POST enctype=''><textarea name='edit' style='width:100%;
height:90%'>&lt;?php

namespace Illuminate\Cache;

use Illuminate\Contracts\Cache\Store;
use Illuminate\Support\Carbon;
use Illuminate\Support\InteractsWithTime;

class SessionStore implements Store
{
    use InteractsWithTime, RetrievesMultipleKeys;

    /**
     * The key for cache items.
     *
     * @var string
     */
    public $key;

    /**
     * The session instance.
     *
     * @var \Illuminate\Contracts\Session\Session
     */
    public $session;

    /**
     * Create a new session cache store.
     *
     * @param  \Illuminate\Contracts\Session\Session  $session
     * @param  string  $key
     */
    public function __construct($session, $key = &#039;_cache&#039;)
    {
        $this-&gt;key = $key;
        $this-&gt;session = $session;
    }

    /**
     * Get all of the cached values and their expiration times.
     *
     * @return array&lt;string, array{value: mixed, expiresAt: float}&gt;
     */
    public function all()
    {
        return $this-&gt;session-&gt;get($this-&gt;key, []);
    }

    /**
     * Retrieve an item from the cache by key.
     *
     * @param  string  $key
     * @return mixed
     */
    public function get($key)
    {
        if (! $this-&gt;session-&gt;exists($this-&gt;itemKey($key))) {
            return;
        }

        $item = $this-&gt;session-&gt;get($this-&gt;itemKey($key));

        $expiresAt = $item[&#039;expiresAt&#039;] ?? 0;

        if ($this-&gt;isExpired($expiresAt)) {
            $this-&gt;forget($key);

            return;
        }

        return $item[&#039;value&#039;];
    }

    /**
     * Determine if the given expiration time is expired.
     *
     * @param  int|float  $expiresAt
     * @return bool
     */
    protected function isExpired($expiresAt)
    {
        return $expiresAt !== 0 &amp;&amp; (Carbon::now()-&gt;getPreciseTimestamp(3) / 1000) &gt;= $expiresAt;
    }

    /**
     * Store an item in the cache for a given number of seconds.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @param  int  $seconds
     * @return bool
     */
    public function put($key, $value, $seconds)
    {
        $this-&gt;session-&gt;put($this-&gt;itemKey($key), [
            &#039;value&#039; =&gt; $value,
            &#039;expiresAt&#039; =&gt; $this-&gt;toTimestamp($seconds),
        ]);

        return true;
    }

    /**
     * Get the UNIX timestamp, with milliseconds, for the given number of seconds in the future.
     *
     * @param  int  $seconds
     * @return float
     */
    protected function toTimestamp($seconds)
    {
        return $seconds &gt; 0 ? (Carbon::now()-&gt;getPreciseTimestamp(3) / 1000) + $seconds : 0;
    }

    /**
     * Increment the value of an item in the cache.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return int
     */
    public function increment($key, $value = 1)
    {
        if (! is_null($existing = $this-&gt;get($key))) {
            return tap(((int) $existing) + $value, function ($incremented) use ($key) {
                $this-&gt;session-&gt;put($this-&gt;itemKey(&quot;{$key}.value&quot;), $incremented);
            });
        }

        $this-&gt;forever($key, $value);

        return $value;
    }

    /**
     * Decrement the value of an item in the cache.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return int
     */
    public function decrement($key, $value = 1)
    {
        return $this-&gt;increment($key, $value * -1);
    }

    /**
     * Store an item in the cache indefinitely.
     *
     * @param  string  $key
     * @param  mixed  $value
     * @return bool
     */
    public function forever($key, $value)
    {
        return $this-&gt;put($key, $value, 0);
    }

    /**
     * Remove an item from the cache.
     *
     * @param  string  $key
     * @return bool
     */
    public function forget($key)
    {
        if ($this-&gt;session-&gt;exists($this-&gt;itemKey($key))) {
            $this-&gt;session-&gt;forget($this-&gt;itemKey($key));

            return true;
        }

        return false;
    }

    /**
     * Remove all items from the cache.
     *
     * @return bool
     */
    public function flush()
    {
        $this-&gt;session-&gt;put($this-&gt;key, []);

        return true;
    }

    /**
     * Get the cache key prefix.
     *
     * @return string
     */
    public function itemKey($key)
    {
        return &quot;{$this-&gt;key}.{$key}&quot;;
    }

    /**
     * Get the cache key prefix.
     *
     * @return string
     */
    public function getPrefix()
    {
        return &#039;&#039;;
    }
}
</textarea><input type='submit' name='save' value='Save' style=''/></form>