Edit File by line

<?php

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/**

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* WordPress Network Administration API.

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* @package WordPress

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* @subpackage Administration

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* @since 4.4.0

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/**

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* Check for an existing network.

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* @since 3.0.0

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* @global wpdb $wpdb WordPress database abstraction object.

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* @return string|false Base domain if network exists, otherwise false.

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function network_domain_check() {

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global $wpdb;

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$sql = $wpdb->prepare( 'SHOW TABLES LIKE %s', $wpdb->esc_like( $wpdb->site ) );

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if ( $wpdb->get_var( $sql ) ) {

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return $wpdb->get_var( "SELECT domain FROM $wpdb->site ORDER BY id ASC LIMIT 1" );

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}

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return false;

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}

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/**

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* Allow subdomain installation

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* @since 3.0.0

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* @return bool Whether subdomain installation is allowed

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function allow_subdomain_install() {

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$home = get_option( 'home' );

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$domain = parse_url( $home, PHP_URL_HOST );

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if ( parse_url( $home, PHP_URL_PATH ) || 'localhost' === $domain || preg_match( '|^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$|', $domain ) ) {

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return false;

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}

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return true;

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}

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/**

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* Allow subdirectory installation.

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* @since 3.0.0

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* @global wpdb $wpdb WordPress database abstraction object.

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* @return bool Whether subdirectory installation is allowed

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function allow_subdirectory_install() {

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global $wpdb;

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/**

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* Filters whether to enable the subdirectory installation feature in Multisite.

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* @since 3.0.0

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* @param bool $allow Whether to enable the subdirectory installation feature in Multisite.

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* Default false.

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if ( apply_filters( 'allow_subdirectory_install', false ) ) {

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return true;

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}

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if ( defined( 'ALLOW_SUBDIRECTORY_INSTALL' ) && ALLOW_SUBDIRECTORY_INSTALL ) {

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return true;

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}

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$post = $wpdb->get_row( "SELECT ID FROM $wpdb->posts WHERE post_date < DATE_SUB(NOW(), INTERVAL 1 MONTH) AND post_status = 'publish'" );

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if ( empty( $post ) ) {

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return true;

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}

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return false;

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}

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/**

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* Get base domain of network.

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* @since 3.0.0

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* @return string Base domain.

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function get_clean_basedomain() {

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$existing_domain = network_domain_check();

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if ( $existing_domain ) {

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return $existing_domain;

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}

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$domain = preg_replace( '|https?://|', '', get_option( 'siteurl' ) );

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$slash = strpos( $domain, '/' );

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if ( $slash ) {

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$domain = substr( $domain, 0, $slash );

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}

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return $domain;

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}

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/**

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* Prints step 1 for Network installation process.

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* @todo Realistically, step 1 should be a welcome screen explaining what a Network is and such.

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* Navigating to Tools > Network should not be a sudden "Welcome to a new install process!

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* Fill this out and click here." See also contextual help todo.

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* @since 3.0.0

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* @global bool $is_apache

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* @param false|WP_Error $errors Optional. Error object. Default false.

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function network_step1( $errors = false ) {

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global $is_apache;

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if ( defined( 'DO_NOT_UPGRADE_GLOBAL_TABLES' ) ) {

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$cannot_define_constant_message = '<strong>' . __( 'Error:' ) . '</strong> ';

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$cannot_define_constant_message .= sprintf(

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/* translators: %s: DO_NOT_UPGRADE_GLOBAL_TABLES */

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__( 'The constant %s cannot be defined when creating a network.' ),

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'<code>DO_NOT_UPGRADE_GLOBAL_TABLES</code>'

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);

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wp_admin_notice(

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$cannot_define_constant_message,

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array(

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'additional_classes' => array( 'error' ),

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)

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);

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echo '</div>';

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require_once ABSPATH . 'wp-admin/admin-footer.php';

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die();

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}

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$active_plugins = get_option( 'active_plugins' );

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if ( ! empty( $active_plugins ) ) {

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wp_admin_notice(

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'<strong>' . __( 'Warning:' ) . '</strong> ' . sprintf(

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/* translators: %s: URL to Plugins screen. */

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__( 'Please <a href="%s">deactivate your plugins</a> before enabling the Network feature.' ),

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admin_url( 'plugins.php?plugin_status=active' )

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array( 'type' => 'warning' )

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);

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echo '<p>' . __( 'Once the network is created, you may reactivate your plugins.' ) . '</p>';

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echo '</div>';

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require_once ABSPATH . 'wp-admin/admin-footer.php';

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die();

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}

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// Strip standard port from hostname.

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$hostname = preg_replace( '/(?::80|:443)$/', '', get_clean_basedomain() );

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echo '<form method="post">';

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wp_nonce_field( 'install-network-1' );

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$error_codes = array();

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if ( is_wp_error( $errors ) ) {

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$network_created_error_message = '<p><strong>' . __( 'Error: The network could not be created.' ) . '</strong></p>';

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foreach ( $errors->get_error_messages() as $error ) {

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$network_created_error_message .= "<p>$error</p>";

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}

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wp_admin_notice(

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$network_created_error_message,

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array(

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'additional_classes' => array( 'error' ),

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'paragraph_wrap' => false,

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)

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);

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$error_codes = $errors->get_error_codes();

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}

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if ( ! empty( $_POST['sitename'] ) && ! in_array( 'empty_sitename', $error_codes, true ) ) {

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$site_name = $_POST['sitename'];

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} else {

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/* translators: %s: Default network title. */

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$site_name = sprintf( __( '%s Sites' ), get_option( 'blogname' ) );

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}

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if ( ! empty( $_POST['email'] ) && ! in_array( 'invalid_email', $error_codes, true ) ) {

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$admin_email = $_POST['email'];

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} else {

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$admin_email = get_option( 'admin_email' );

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}

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<?php

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if ( isset( $_POST['subdomain_install'] ) ) {

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$subdomain_install = (bool) $_POST['subdomain_install'];

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} elseif ( apache_mod_loaded( 'mod_rewrite' ) ) { // Assume nothing.

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$subdomain_install = true;

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} elseif ( ! allow_subdirectory_install() ) {

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$subdomain_install = true;

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} else {

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$subdomain_install = false;

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$got_mod_rewrite = got_mod_rewrite();

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if ( $got_mod_rewrite ) { // Dangerous assumptions.

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$message_class = 'updated';

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$message = '<p><strong>' . __( 'Warning:' ) . '</strong> ';

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$message .= '<p>' . sprintf(

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/* translators: %s: mod_rewrite */

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__( 'Please make sure the Apache %s module is installed as it will be used at the end of this installation.' ),

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'<code>mod_rewrite</code>'

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) . '</p>';

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} elseif ( $is_apache ) {

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$message_class = 'error';

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$message = '<p><strong>' . __( 'Warning:' ) . '</strong> ';

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$message .= sprintf(

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/* translators: %s: mod_rewrite */

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__( 'It looks like the Apache %s module is not installed.' ),

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'<code>mod_rewrite</code>'

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) . '</p>';

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}

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if ( $got_mod_rewrite || $is_apache ) { // Protect against mod_rewrite mimicry (but ! Apache).

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$message .= '<p>' . sprintf(

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/* translators: 1: mod_rewrite, 2: mod_rewrite documentation URL, 3: Google search for mod_rewrite. */

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__( 'If %1$s is disabled, ask your administrator to enable that module, or look at the <a href="%2$s">Apache documentation</a> or <a href="%3$s">elsewhere</a> for help setting it up.' ),

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'<code>mod_rewrite</code>',

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'https://httpd.apache.org/docs/mod/mod_rewrite.html',

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'https://www.google.com/search?q=apache+mod_rewrite'

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) . '</p>';

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wp_admin_notice(

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$message,

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array(

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'additional_classes' => array( $message_class, 'inline' ),

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'paragraph_wrap' => false,

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)

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);

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}

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}

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if ( allow_subdomain_install() && allow_subdirectory_install() ) :

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<?php // @todo Link to an MS readme? ?>

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<tr>

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<td>

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<?php

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printf(

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/* translators: 1: Host name. */

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_x( 'like <code>site1.%1$s</code> and <code>site2.%1$s</code>', 'subdomain examples' ),

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$hostname

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);

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</td>

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</tr>

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<tr>

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<td>

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<?php

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printf(

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/* translators: 1: Host name. */

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_x( 'like <code>%1$s/site1</code> and <code>%1$s/site2</code>', 'subdirectory examples' ),

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$hostname

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);

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</td>

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</tr>

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</table>

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<?php

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endif;

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if ( WP_CONTENT_DIR !== ABSPATH . 'wp-content' && ( allow_subdirectory_install() || ! allow_subdomain_install() ) ) {

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$subdirectory_warning_message = '<strong>' . __( 'Warning:' ) . '</strong> ';

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$subdirectory_warning_message .= __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' );

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wp_admin_notice(

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$subdirectory_warning_message,

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array(

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'additional_classes' => array( 'error', 'inline' ),

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)

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);

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}

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$is_www = str_starts_with( $hostname, 'www.' );

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if ( $is_www ) :

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<p>

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<?php

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printf(

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/* translators: 1: Site URL, 2: Host name, 3: www. */

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__( 'You should consider changing your site domain to %1$s before enabling the network feature. It will still be possible to visit your site using the %3$s prefix with an address like %2$s but any links will not have the %3$s prefix.' ),

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'<code>' . substr( $hostname, 4 ) . '</code>',

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'<code>' . $hostname . '</code>',

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'<code>www</code>'

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);

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</p>

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<tr>

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<td>

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<?php

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printf(

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/* translators: %s: Host name. */

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__( 'The internet address of your network will be %s.' ),

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'<code>' . $hostname . '</code>'

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);

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</td>

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</tr>

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</table>

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<?php endif; ?>

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<?php if ( 'localhost' === $hostname ) : ?>

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<tr>

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<td>

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<?php

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printf(

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/* translators: 1: localhost, 2: localhost.localdomain */

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__( 'Because you are using %1$s, the sites in your WordPress network must use sub-directories. Consider using %2$s if you wish to use sub-domains.' ),

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'<code>localhost</code>',

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'<code>localhost.localdomain</code>'

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);

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// Uh oh:

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if ( ! allow_subdirectory_install() ) {

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echo ' <strong>' . __( 'Warning:' ) . ' ' . __( 'The main site in a sub-directory installation will need to use a modified permalink structure, potentially breaking existing links.' ) . '</strong>';

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}

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</td>

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</tr>

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<?php elseif ( ! allow_subdomain_install() ) : ?>

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<tr>

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<td>

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<?php

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_e( 'Because your installation is in a directory, the sites in your WordPress network must use sub-directories.' );

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// Uh oh:

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if ( ! allow_subdirectory_install() ) {

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echo ' <strong>' . __( 'Warning:' ) . ' ' . __( 'The main site in a sub-directory installation will need to use a modified permalink structure, potentially breaking existing links.' ) . '</strong>';

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}

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</td>

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</tr>

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<?php elseif ( ! allow_subdirectory_install() ) : ?>

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<tr>

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<td>

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<?php

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_e( 'Because your installation is not new, the sites in your WordPress network must use sub-domains.' );

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echo ' <strong>' . __( 'The main site in a sub-directory installation will need to use a modified permalink structure, potentially breaking existing links.' ) . '</strong>';

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</td>

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</tr>

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<?php endif; ?>

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<?php if ( ! $is_www ) : ?>

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<tr>

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<td>

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<?php

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printf(

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/* translators: %s: Host name. */

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__( 'The internet address of your network will be %s.' ),

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'<code>' . $hostname . '</code>'

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);

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</td>

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</tr>

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<?php endif; ?>

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<tr>

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<td>

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<?php _e( 'What would you like to call your network?' ); ?>

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</p>

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</td>

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</tr>

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<tr>

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<td>

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<?php _e( 'Your email address.' ); ?>

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</p>

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</td>

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</tr>

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</table>

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<?php submit_button( __( 'Install' ), 'primary', 'submit' ); ?>

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</form>

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<?php

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}

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/**

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* Prints step 2 for Network installation process.

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* @since 3.0.0

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* @global wpdb $wpdb WordPress database abstraction object.

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* @global bool $is_nginx Whether the server software is Nginx or something else.

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* @param false|WP_Error $errors Optional. Error object. Default false.

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function network_step2( $errors = false ) {

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global $wpdb, $is_nginx;

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$hostname = get_clean_basedomain();

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$slashed_home = trailingslashit( get_option( 'home' ) );

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$base = parse_url( $slashed_home, PHP_URL_PATH );

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$document_root_fix = str_replace( '\\', '/', realpath( $_SERVER['DOCUMENT_ROOT'] ) );

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$abspath_fix = str_replace( '\\', '/', ABSPATH );

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$home_path = str_starts_with( $abspath_fix, $document_root_fix ) ? $document_root_fix . $base : get_home_path();

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$wp_siteurl_subdir = preg_replace( '#^' . preg_quote( $home_path, '#' ) . '#', '', $abspath_fix );

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$rewrite_base = ! empty( $wp_siteurl_subdir ) ? ltrim( trailingslashit( $wp_siteurl_subdir ), '/' ) : '';

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$location_of_wp_config = $abspath_fix;

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if ( ! file_exists( ABSPATH . 'wp-config.php' ) && file_exists( dirname( ABSPATH ) . '/wp-config.php' ) ) {

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$location_of_wp_config = dirname( $abspath_fix );

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}

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$location_of_wp_config = trailingslashit( $location_of_wp_config );

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// Wildcard DNS message.

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if ( is_wp_error( $errors ) ) {

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wp_admin_notice(

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$errors->get_error_message(),

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array(

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'additional_classes' => array( 'error' ),

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)

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);

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}

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if ( $_POST ) {

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if ( allow_subdomain_install() ) {

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$subdomain_install = allow_subdirectory_install() ? ! empty( $_POST['subdomain_install'] ) : true;

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} else {

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$subdomain_install = false;

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}

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} else {

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if ( is_multisite() ) {

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$subdomain_install = is_subdomain_install();

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<?php

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} else {

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$subdomain_install = (bool) $wpdb->get_var( "SELECT meta_value FROM $wpdb->sitemeta WHERE site_id = 1 AND meta_key = 'subdomain_install'" );

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wp_admin_notice(

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'<strong>' . __( 'Warning:' ) . '</strong> ' . __( 'An existing WordPress network was detected.' ),

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array(

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'additional_classes' => array( 'error' ),

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)

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);

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<?php

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}

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}

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$subdir_match = $subdomain_install ? '' : '([_0-9a-zA-Z-]+/)?';

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$subdir_replacement_01 = $subdomain_install ? '' : '$1';

[464] Fix | Delete

$subdir_replacement_12 = $subdomain_install ? '$1' : '$2';

[465] Fix | Delete

[466] Fix | Delete

if ( $_POST || ! is_multisite() ) {

[467] Fix | Delete

[468] Fix | Delete

[469] Fix | Delete

[470] Fix | Delete

<?php

[471] Fix | Delete

$notice_message = '<strong>' . __( 'Caution:' ) . '</strong> ';

[472] Fix | Delete

$notice_args = array(

[473] Fix | Delete

'type' => 'warning',

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'additional_classes' => array( 'inline' ),

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);

[476] Fix | Delete

[477] Fix | Delete

if ( file_exists( $home_path . '.htaccess' ) ) {

[478] Fix | Delete

$notice_message .= sprintf(

[479] Fix | Delete

/* translators: 1: wp-config.php, 2: .htaccess */

[480] Fix | Delete

__( 'You should back up your existing %1$s and %2$s files.' ),

[481] Fix | Delete

'<code>wp-config.php</code>',

[482] Fix | Delete

'<code>.htaccess</code>'

[483] Fix | Delete

);

[484] Fix | Delete

} elseif ( file_exists( $home_path . 'web.config' ) ) {

[485] Fix | Delete

$notice_message .= sprintf(

[486] Fix | Delete

/* translators: 1: wp-config.php, 2: web.config */

[487] Fix | Delete

__( 'You should back up your existing %1$s and %2$s files.' ),

[488] Fix | Delete

'<code>wp-config.php</code>',

[489] Fix | Delete

'<code>web.config</code>'

[490] Fix | Delete

);

[491] Fix | Delete

} else {

[492] Fix | Delete

$notice_message .= sprintf(

[493] Fix | Delete

/* translators: %s: wp-config.php */

[494] Fix | Delete

__( 'You should back up your existing %s file.' ),

[495] Fix | Delete

'<code>wp-config.php</code>'

[496] Fix | Delete

);

[497] Fix | Delete

}

[498] Fix | Delete

[499] Fix | Delete