$message = sprintf( '%s(): %s', $function_name, $message );
    }
 
    $message = wp_kses(
        $message,
        array(
            'a'      => array( 'href' => true ),
            'br'     => array(),
            'code'   => array(),
            'em'     => array(),
            'strong' => array(),
        ),
        array( 'http', 'https' )
    );
 
    if ( E_USER_ERROR === $error_level ) {
        throw new WP_Exception( $message );
    }
 
    trigger_error( $message, $error_level );
}
 
/**
 * Determines whether the server is running an earlier than 1.5.0 version of lighttpd.
 *
 * @since 2.5.0
 *
 * @return bool Whether the server is running lighttpd < 1.5.0.
 */
function is_lighttpd_before_150() {
    $server_parts    = explode( '/', isset( $_SERVER['SERVER_SOFTWARE'] ) ? $_SERVER['SERVER_SOFTWARE'] : '' );
    $server_parts[1] = isset( $server_parts[1] ) ? $server_parts[1] : '';
 
    return ( 'lighttpd' === $server_parts[0] && -1 === version_compare( $server_parts[1], '1.5.0' ) );
}
 
/**
 * Determines whether the specified module exist in the Apache config.
 *
 * @since 2.5.0

                );
            }
        } else {
            if ( $replacement ) {
                $message = sprintf(
                    'Function %1$s is <strong>deprecated</strong> since version %2$s! Use %3$s instead.',
                    $function_name,
                    $version,
                    $replacement
                );
            } else {
                $message = sprintf(
                    'Function %1$s is <strong>deprecated</strong> since version %2$s with no alternative available.',
                    $function_name,
                    $version
                );
            }
        }
 
        wp_trigger_error( '', $message, E_USER_DEPRECATED );
    }
}
 
/**
 * Marks a constructor as deprecated and informs when it has been used.
 *
 * Similar to _deprecated_function(), but with different strings. Used to
 * remove PHP4-style constructors.
 *
 * The current behavior is to trigger a user error if `WP_DEBUG` is true.
 *
 * This function is to be used in every PHP4-style constructor method that is deprecated.
 *
 * @since 4.3.0
 * @since 4.5.0 Added the `$parent_class` parameter.
 * @since 5.4.0 This function is no longer marked as "private".
 * @since 5.4.0 The error type is now classified as E_USER_DEPRECATED (used to default to E_USER_NOTICE).
 *
 * @param string $class_name   The class containing the deprecated constructor.
 * @param string $version      The version of WordPress that deprecated the function.

 * publication date, not the smallest ID.
 *
 * Because this function uses the MySQL '=' comparison, $page_title will usually be matched
 * as case-insensitive with default collation.
 *
 * @since 2.1.0
 * @since 3.0.0 The `$post_type` parameter was added.
 * @deprecated 6.2.0 Use WP_Query.
 *
 * @global wpdb $wpdb WordPress database abstraction object.
 *
 * @param string       $page_title Page title.
 * @param string       $output     Optional. The required return type. One of OBJECT, ARRAY_A, or ARRAY_N, which
 *                                 correspond to a WP_Post object, an associative array, or a numeric array,
 *                                 respectively. Default OBJECT.
 * @param string|array $post_type  Optional. Post type or array of post types. Default 'page'.
 * @return WP_Post|array|null WP_Post (or array) on success, or null on failure.
 */
function get_page_by_title( $page_title, $output = OBJECT, $post_type = 'page' ) {
    _deprecated_function( __FUNCTION__, '6.2.0', 'WP_Query' );
    global $wpdb;
 
    if ( is_array( $post_type ) ) {
        $post_type           = esc_sql( $post_type );
        $post_type_in_string = "'" . implode( "','", $post_type ) . "'";
        $sql                 = $wpdb->prepare(
            "SELECT ID
            FROM $wpdb->posts
            WHERE post_title = %s
            AND post_type IN ($post_type_in_string)",
            $page_title
        );
    } else {
        $sql = $wpdb->prepare(
            "SELECT ID
            FROM $wpdb->posts
            WHERE post_title = %s
            AND post_type = %s",
            $page_title,
            $post_type

     *
     * @access public
     * @return void
     */
    public function __construct() {
        //Template fallback
        add_action( 'template_redirect', array( $this, 'preview_redirect' ) );
    }
 
    /**
     * Check which page is being viewed
     *
     * @access public
     * @return void
     */
    public function preview_redirect() {
        global $wp;
 
        $title        = 'VFB Pro - Email Preview';
        $preview_page = get_page_by_title( $title );
 
        if ( !isset( $wp->query_vars['page_id'] ) )
            return;
 
        // Check page slug
        if ( $wp->query_vars['page_id'] == $preview_page->ID ) {
            $return_template = VFB_PLUGIN_DIR . 'inc/preview-email.php';
 
            $this->do_preview_redirect( $return_template );
        }
    }
 
    /**
     * Display our preview URL
     *
     * @access public
     * @param mixed $url
     * @return void
     */
    public function do_preview_redirect( $url ) {

 
        $this->iterations[ $nesting_level ] = $this->priorities;
 
        $num_args = count( $args );
 
        do {
            $this->current_priority[ $nesting_level ] = current( $this->iterations[ $nesting_level ] );
 
            $priority = $this->current_priority[ $nesting_level ];
 
            foreach ( $this->callbacks[ $priority ] as $the_ ) {
                if ( ! $this->doing_action ) {
                    $args[0] = $value;
                }
 
                // Avoid the array_slice() if possible.
                if ( 0 === $the_['accepted_args'] ) {
                    $value = call_user_func( $the_['function'] );
                } elseif ( $the_['accepted_args'] >= $num_args ) {
                    $value = call_user_func_array( $the_['function'], $args );
                } else {
                    $value = call_user_func_array( $the_['function'], array_slice( $args, 0, $the_['accepted_args'] ) );
                }
            }
        } while ( false !== next( $this->iterations[ $nesting_level ] ) );
 
        unset( $this->iterations[ $nesting_level ] );
        unset( $this->current_priority[ $nesting_level ] );
 
        --$this->nesting_level;
 
        return $value;
    }
 
    /**
     * Calls the callback functions that have been added to an action hook.
     *
     * @since 4.7.0
     *
     * @param array $args Parameters to pass to the callback functions.

        } while ( false !== next( $this->iterations[ $nesting_level ] ) );
 
        unset( $this->iterations[ $nesting_level ] );
        unset( $this->current_priority[ $nesting_level ] );
 
        --$this->nesting_level;
 
        return $value;
    }
 
    /**
     * Calls the callback functions that have been added to an action hook.
     *
     * @since 4.7.0
     *
     * @param array $args Parameters to pass to the callback functions.
     */
    public function do_action( $args ) {
        $this->doing_action = true;
        $this->apply_filters( '', $args );
 
        // If there are recursive calls to the current action, we haven't finished it until we get to the last one.
        if ( ! $this->nesting_level ) {
            $this->doing_action = false;
        }
    }
 
    /**
     * Processes the functions hooked into the 'all' hook.
     *
     * @since 4.7.0
     *
     * @param array $args Arguments to pass to the hook callbacks. Passed by reference.
     */
    public function do_all_hook( &$args ) {
        $nesting_level                      = $this->nesting_level++;
        $this->iterations[ $nesting_level ] = $this->priorities;
 
        do {
            $priority = current( $this->iterations[ $nesting_level ] );

    if ( ! isset( $wp_filter[ $hook_name ] ) ) {
        if ( isset( $wp_filter['all'] ) ) {
            array_pop( $wp_current_filter );
        }
 
        return;
    }
 
    if ( ! isset( $wp_filter['all'] ) ) {
        $wp_current_filter[] = $hook_name;
    }
 
    if ( empty( $arg ) ) {
        $arg[] = '';
    } elseif ( is_array( $arg[0] ) && 1 === count( $arg[0] ) && isset( $arg[0][0] ) && is_object( $arg[0][0] ) ) {
        // Backward compatibility for PHP4-style passing of `array( &$this )` as action `$arg`.
        $arg[0] = $arg[0][0];
    }
 
    $wp_filter[ $hook_name ]->do_action( $arg );
 
    array_pop( $wp_current_filter );
}
 
/**
 * Calls the callback functions that have been added to an action hook, specifying arguments in an array.
 *
 * @since 2.1.0
 *
 * @see do_action() This function is identical, but the arguments passed to the
 *                  functions hooked to `$hook_name` are supplied using an array.
 *
 * @global WP_Hook[] $wp_filter         Stores all of the filters and actions.
 * @global int[]     $wp_actions        Stores the number of times each action was triggered.
 * @global string[]  $wp_current_filter Stores the list of current filters with the current one last.
 *
 * @param string $hook_name The name of the action to be executed.
 * @param array  $args      The arguments supplied to the functions hooked to `$hook_name`.
 */
function do_action_ref_array( $hook_name, $args ) {

<?php
/**
 * Loads the correct template based on the visitor's url
 *
 * @package WordPress
 */
if ( wp_using_themes() ) {
    /**
     * Fires before determining which template to load.
     *
     * @since 1.5.0
     */
    do_action( 'template_redirect' );
}
 
/**
 * Filters whether to allow 'HEAD' requests to generate content.
 *
 * Provides a significant performance bump by exiting before the page
 * content loads for 'HEAD' requests. See #14348.
 *
 * @since 3.5.0
 *
 * @param bool $exit Whether to exit without generating any content for 'HEAD' requests. Default true.
 */
if ( 'HEAD' === $_SERVER['REQUEST_METHOD'] && apply_filters( 'exit_on_http_head', true ) ) {
    exit;
}
 
// Process feeds and trackbacks even if not using themes.
if ( is_robots() ) {
    /**
     * Fired when the template loader determines a robots.txt request.
     *
     * @since 2.1.0
     */
    do_action( 'do_robots' );
    return;
} elseif ( is_favicon() ) {
    /**

<?php
/**
 * Loads the WordPress environment and template.
 *
 * @package WordPress
 */
 
if ( ! isset( $wp_did_header ) ) {
 
    $wp_did_header = true;
 
    // Load the WordPress library.
    require_once __DIR__ . '/wp-load.php';
 
    // Set up the WordPress query.
    wp();
 
    // Load the theme template.
    require_once ABSPATH . WPINC . '/template-loader.php';
 
}
 

<?php
/**
 * Front to the WordPress application. This file doesn't do anything, but loads
 * wp-blog-header.php which does and tells WordPress to load the theme.
 *
 * @package WordPress
 */
 
/**
 * Tells WordPress to load the WordPress theme and output it.
 *
 * @var bool
 */
define( 'WP_USE_THEMES', true );
 
/** Loads the WordPress Environment and Template */
require __DIR__ . '/wp-blog-header.php';