user frontend image upload

frontendimage.php

<?php
// Processing Section
global $current_user, $wp_roles;
get_currentuserinfo();

/* Load the registration file. */
require_once( ABSPATH . WPINC . '/registration.php' );

/* If profile was saved, update profile. */
if ( 'POST' == $_SERVER['REQUEST_METHOD'] && !empty( $_POST['action'] ) && $_POST['action'] == 'update-user' ) {

   
    /* Update user information. */
    if ( !empty( $_POST['image'] ) )
        update_usermeta( $current_user->id, 'user_image', esc_url( $_POST['image'] ) );

    /* Redirect so the page will show updated info. */
    if ( !$error ) {
        wp_redirect( get_permalink() );
        exit;
    }
}
?>	
<form method="post" enctype="multipart/form-data">
<input type="hidden" name="size" value="350000">
<input type="file" name="user_image">
<?php echo $referer; ?>
<input name="updateuser" type="submit" id="updateuser" class="submit button" value="<?php _e('Update', 'profile'); ?>" />
<?php wp_nonce_field( 'update-user' ) ?>
<input name="action" type="hidden" id="action" value="update-user" />
</form>