minimum_age );
}
/**
* Returns the visitor's age. Adds compatibility for PHP 5.2
*
* @since 0.1.5
* @return int
*/
function av_get_visitor_age( $year, $month, $day ) {
global $age_verify;
$age = 0;
$birthday = new DateTime( $year . '-' . $month . '-' . $day );
$phpversion = phpversion();
if ( $phpversion >= '5.3' ) :
$current = new DateTime( current_time( 'mysql' ) );
$age = $birthday->diff( $current );
$age = $age->format( '%y' );
else :
list( $year, $month, $day ) = explode( '-', $birthday->format( 'Y-m-d' ) );
$year_diff = date_i18n( 'Y' ) - $year;
$month_diff = date_i18n( 'm' ) - $month;
$day_diff = date_i18n( 'd' ) - $day;
if ( $month_diff < 0 )
$year_diff--;
elseif ( ( $month_diff == 0 ) && ( $day_diff < 0 ) )
$year_diff--;
$age = $year_diff;
endif;
return (int) $age;
}
/**
* Returns cookie duration. This lets us know how long to keep a
* visitor's verified cookie. You can filter this if you like.
*
* @since 0.1
* @return int
*/
function av_get_cookie_duration() {
global $age_verify;
return (int) apply_filters( 'av_cookie_duration', $age_verify->cookie_duration );
}
/**
* Determines if only certain content should be restricted based on settings
*
* @since 0.2
* @return bool
*/
function av_only_content_restricted() {
$only_content_restricted = ( get_option( '_av_require_for' ) == 'content' ) ? true : false;
return (bool) apply_filters( 'av_only_content_restricted', $only_content_restricted );
}
/**
* Determines if a certain piece of content is restricted
*
* @since 0.2
* @return bool
*/
function av_content_is_restricted( $post_id = null ) {
global $post;
if ( $post_id === null )
$post_id = $post->ID;
$is_restricted = ( get_post_meta( $post_id, '_av_needs_verify', true ) == 1 ) ? true : false;
return $is_restricted;
}
/**
* This is the very important function that determines if a given visitor
* needs to be verified before viewing the site. You can filter this if you like.
*
* @since 0.1
* @return bool
*/
function av_needs_verification() {
// Assume the visitor needs to be verified
$return = true;
// If the site is restricted on a per-content basis, let 'em through
if ( av_only_content_restricted() ) :
$return = false;
// If the content being viewed is restricted, throw up the form
if ( is_singular() && av_content_is_restricted() )
$return = true;
endif;
// Check that the form was at least submitted. This lets visitors through that have cookies disabled.
$nonce = ( isset( $_REQUEST['age-verified'] ) ) ? $_REQUEST['age-verified'] : '';
if ( wp_verify_nonce( $nonce, 'age-verified' ) )
$return = false;
// If logged in users are exempt, and the visitor is logged in, let 'em through
if ( get_option( '_av_always_verify', 'guests' ) == 'guests' && is_user_logged_in() )
$return = false;
// Or, if there is a valid cookie let 'em through
if ( isset( $_COOKIE['age-verified'] ) )
$return = false;
return (bool) apply_filters( 'av_needs_verification', $return );
}
/***********************************************************/
/******************** Display Functions ********************/
/***********************************************************/
/**
* Echoes the overlay heading
*
* @since 0.1
* @echo string
*/
function av_the_heading() {
echo av_get_the_heading();
}
/**
* Returns the overlay heading. You can filter this if you like.
*
* @since 0.1
* @return string
*/
function av_get_the_heading() {
return sprintf( apply_filters( 'av_heading', get_option( '_av_heading', __( 'You must be %s years old to visit this site.', 'age_verify' ) ) ), av_get_minimum_age() );
}
/**
* Echoes the overlay description, which lives below the heading and above the form.
*
* @since 0.1
* @echo string
*/
function av_the_desc() {
echo av_get_the_desc();
}
/**
* Returns the overlay description, which lives below the heading and above the form.
* You can filter this if you like.
*
* @since 0.1
* @return string|false
*/
function av_get_the_desc() {
$desc = apply_filters( 'av_description', get_option( '_av_description', __( 'Please verify your age', 'age_verify' ) ) );
if ( ! empty( $desc ) )
return $desc;
else
return false;
}
/**
* Returns the form's input type, based on the settings.
* You can filter this if you like.
*
* @since 0.1
* @return string
*/
function av_get_input_type() {
return apply_filters( 'av_input_type', get_option( '_av_input_type', 'dropdowns' ) );
}
/**
* Returns the overlay box's background color
* You can filter this if you like.
*
* @since 0.1
* @return string
*/
function av_get_overlay_color() {
if ( get_option( '_av_overlay_color' ) )
$color = get_option( '_av_overlay_color' );
else
$color = 'fff';
return apply_filters( 'av_overlay_color', $color );
}
/**
* Returns the overlay's background color
* You can filter this if you like.
*
* @since 0.1
* @return string
*/
function av_get_background_color() {
if ( current_theme_supports( 'custom-background' ) )
$default = get_background_color();
else
$default = 'e6e6e6';
if ( get_option( '_av_bgcolor' ) )
$color = get_option( '_av_bgcolor' );
else
$color = $default;
return apply_filters( 'av_background_color', $color );
}
/**
* Echoes the actual form
*
* @since 0.1
* @echo string
*/
function av_verify_form() {
echo av_get_verify_form();
}
/**
* Returns the all-important verification form.
* You can filter this if you like.
*
* @since 0.1
* @return string
*/
function av_get_verify_form() {
$input_type = av_get_input_type();
$submit_button_label = apply_filters( 'av_form_submit_label', __( 'Enter Site »', 'age_verify' ) );
$form = '';
$form .= '';
return apply_filters( 'av_verify_form', $form );
}
/***********************************************************/
/*************** User Registration Functions ***************/
/***********************************************************/
/**
* Determines whether or not users need to verify their age before
* registering for the site. You can filter this if you like.
*
* @since 0.1
* @return bool
*/
function av_confirmation_required() {
if ( get_option( '_av_membership', 1 ) == 1 )
$return = true;
else
$return = false;
return (bool) apply_filters( 'av_confirmation_required', $return );
}
/**
* Adds a checkbox to the default WordPress registration form for
* users to verify their ages. You can filter the text if you like.
*
* @since 0.1
* @echo string
*/
function av_register_form() {
$text = ' ';
echo $text;
}
/**
* Make sure the user checked the box when registering.
* If not, print an error. You can filter the error's text if you like.
*
* @since 0.1
* @return bool
*/
function av_register_check( $login, $email, $errors ) {
if ( ! isset( $_POST['_av_confirm_age'] ) )
$errors->add( 'empty_age_confirm', 'ERROR: ' . apply_filters( 'av_registration_error', __( 'Please confirm your age', 'age_verify' ) ) );
}