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

namespace Illuminate\Auth;

use Closure;
use Illuminate\Contracts\Auth\Authenticatable as UserContract;
use Illuminate\Contracts\Auth\UserProvider;
use Illuminate\Contracts\Hashing\Hasher as HasherContract;
use Illuminate\Contracts\Support\Arrayable;
use Illuminate\Database\ConnectionInterface;
use Illuminate\Support\Str;

class DatabaseUserProvider implements UserProvider
{
    /**
     * The active database connection.
     *
     * @var \Illuminate\Database\ConnectionInterface
     */
    protected $conn;

    /**
     * The hasher implementation.
     *
     * @var \Illuminate\Contracts\Hashing\Hasher
     */
    protected $hasher;

    /**
     * The table containing the users.
     *
     * @var string
     */
    protected $table;

    /**
     * Create a new database user provider.
     *
     * @param  \Illuminate\Database\ConnectionInterface  $conn
     * @param  \Illuminate\Contracts\Hashing\Hasher  $hasher
     * @param  string  $table
     * @return void
     */
    public function __construct(ConnectionInterface $conn, HasherContract $hasher, $table)
    {
        $this-&gt;conn = $conn;
        $this-&gt;table = $table;
        $this-&gt;hasher = $hasher;
    }

    /**
     * Retrieve a user by their unique identifier.
     *
     * @param  mixed  $identifier
     * @return \Illuminate\Contracts\Auth\Authenticatable|null
     */
    public function retrieveById($identifier)
    {
        $user = $this-&gt;conn-&gt;table($this-&gt;table)-&gt;find($identifier);

        return $this-&gt;getGenericUser($user);
    }

    /**
     * Retrieve a user by their unique identifier and &quot;remember me&quot; token.
     *
     * @param  mixed  $identifier
     * @param  string  $token
     * @return \Illuminate\Contracts\Auth\Authenticatable|null
     */
    public function retrieveByToken($identifier, $token)
    {
        $user = $this-&gt;getGenericUser(
            $this-&gt;conn-&gt;table($this-&gt;table)-&gt;find($identifier)
        );

        return $user &amp;&amp; $user-&gt;getRememberToken() &amp;&amp; hash_equals($user-&gt;getRememberToken(), $token)
                    ? $user : null;
    }

    /**
     * Update the &quot;remember me&quot; token for the given user in storage.
     *
     * @param  \Illuminate\Contracts\Auth\Authenticatable  $user
     * @param  string  $token
     * @return void
     */
    public function updateRememberToken(UserContract $user, $token)
    {
        $this-&gt;conn-&gt;table($this-&gt;table)
                -&gt;where($user-&gt;getAuthIdentifierName(), $user-&gt;getAuthIdentifier())
                -&gt;update([$user-&gt;getRememberTokenName() =&gt; $token]);
    }

    /**
     * Retrieve a user by the given credentials.
     *
     * @param  array  $credentials
     * @return \Illuminate\Contracts\Auth\Authenticatable|null
     */
    public function retrieveByCredentials(array $credentials)
    {
        if (empty($credentials) ||
           (count($credentials) === 1 &amp;&amp;
            array_key_exists('password', $credentials))) {
            return;
        }

        // First we will add each credential element to the query as a where clause.
        // Then we can execute the query and, if we found a user, return it in a
        // generic &quot;user&quot; object that will be utilized by the Guard instances.
        $query = $this-&gt;conn-&gt;table($this-&gt;table);

        foreach ($credentials as $key =&gt; $value) {
            if (Str::contains($key, 'password')) {
                continue;
            }

            if (is_array($value) || $value instanceof Arrayable) {
                $query-&gt;whereIn($key, $value);
            } elseif ($value instanceof Closure) {
                $value($query);
            } else {
                $query-&gt;where($key, $value);
            }
        }

        // Now we are ready to execute the query to see if we have an user matching
        // the given credentials. If not, we will just return nulls and indicate
        // that there are no matching users for these given credential arrays.
        $user = $query-&gt;first();

        return $this-&gt;getGenericUser($user);
    }

    /**
     * Get the generic user.
     *
     * @param  mixed  $user
     * @return \Illuminate\Auth\GenericUser|null
     */
    protected function getGenericUser($user)
    {
        if (! is_null($user)) {
            return new GenericUser((array) $user);
        }
    }

    /**
     * Validate a user against the given credentials.
     *
     * @param  \Illuminate\Contracts\Auth\Authenticatable  $user
     * @param  array  $credentials
     * @return bool
     */
    public function validateCredentials(UserContract $user, array $credentials)
    {
        return $this-&gt;hasher-&gt;check(
            $credentials['password'], $user-&gt;getAuthPassword()
        );
    }
}
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