<?php
/**
* These functions are needed to load Multisite.
*
* @since 3.0.0
*
* @package WordPress
* @subpackage Multisite
*/
/**
* Whether a subdomain configuration is enabled.
*
* @since 3.0.0
*
* @return bool True if subdomain configuration is enabled, false otherwise.
*/
function is_subdomain_install() {
if ( defined( 'SUBDOMAIN_INSTALL' ) ) {
return SUBDOMAIN_INSTALL;
}
return ( defined( 'VHOST' ) && 'yes' === VHOST );
}
/**
* Returns array of network plugin files to be included in global scope.
*
* The default directory is wp-content/plugins. To change the default directory
* manually, define `WP_PLUGIN_DIR` and `WP_PLUGIN_URL` in `wp-config.php`.
*
* @access private
* @since 3.1.0
*
* @return string[] Array of absolute paths to files to include.
*/
function wp_get_active_network_plugins() {
$active_plugins = (array) get_site_option( 'active_sitewide_plugins', array() );
if ( empty( $active_plugins ) ) {
return array();
}
$plugins = array();
$active_plugins = array_keys( $active_plugins );
sort( $active_plugins );
foreach ( $active_plugins as $plugin ) {
if ( ! validate_file( $plugin ) // $plugin must validate as file.
&& str_ends_with( $plugin, '.php' ) // $plugin must end with '.php'.
&& file_exists( WP_PLUGIN_DIR . '/' . $plugin ) // $plugin must exist.
) {
$plugins[] = WP_PLUGIN_DIR . '/' . $plugin;
}
}
return $plugins;
}
/**
* Checks status of current blog.
*
* Checks if the blog is deleted, inactive, archived, or spammed.
*
* Dies with a default message if the blog does not pass the check.
*
* To change the default message when a blog does not pass the check,
* use the wp-content/blog-deleted.php, blog-inactive.php and
* blog-suspended.php drop-ins.
*
* @since 3.0.0
*
* @return true|string Returns true on success, or drop-in file to include.
*/
function ms_site_check() {
/**
* Filters checking the status of the current blog.
*
* @since 3.0.0
*
* @param bool|null $check Whether to skip the blog status check. Default null.
*/
$check = apply_filters( 'ms_site_check', null );
if ( null !== $check ) {
return true;
}
// Allow super admins to see blocked sites.
if ( is_super_admin() ) {
return true;
}
$blog = get_site();
if ( '1' === $blog->deleted ) {
if ( file_exists( WP_CONTENT_DIR . '/blog-deleted.php' ) ) {
return WP_CONTENT_DIR . '/blog-deleted.php';
} else {
wp_die( __( 'This site is no longer available.' ), '', array( 'response' => 410 ) );
}
}
if ( '2' === $blog->deleted ) {
if ( file_exists( WP_CONTENT_DIR . '/blog-inactive.php' ) ) {
return WP_CONTENT_DIR . '/blog-inactive.php';
} else {
$admin_email = str_replace( '@', ' AT ', get_site_option( 'admin_email', 'support@' . get_network()->domain ) );
wp_die(
sprintf(
/* translators: %s: Admin email link. */
__( 'This site has not been activated yet. If you are having problems activating your site, please contact %s.' ),
sprintf( '<a href="mailto:%1$s">%1$s</a>', $admin_email )
)
);
}
}
if ( '1' === $blog->archived || '1' === $blog->spam ) {
if ( file_exists( WP_CONTENT_DIR . '/blog-suspended.php' ) ) {
return WP_CONTENT_DIR . '/blog-suspended.php';
} else {
wp_die( __( 'This site has been archived or suspended.' ), '', array( 'response' => 410 ) );
}
}
return true;
}
/**
* Retrieves the closest matching network for a domain and path.
*
* @since 3.9.0
*
* @internal In 4.4.0, converted to a wrapper for WP_Network::get_by_path()
*
* @param string $domain Domain to check.
* @param string $path Path to check.
* @param int|null $segments Path segments to use. Defaults to null, or the full path.
* @return WP_Network|false Network object if successful. False when no network is found.
*/
function get_network_by_path( $domain, $path, $segments = null ) {
return WP_Network::get_by_path( $domain, $path, $segments );
}
/**
* Retrieves the closest matching site object by its domain and path.
*
* This will not necessarily return an exact match for a domain and path. Instead, it
* breaks the domain and path into pieces that are then used to match the closest
* possibility from a query.
*
* The intent of this method is to match a site object during bootstrap for a
* requested site address
*
* @since 3.9.0
* @since 4.7.0 Updated to always return a `WP_Site` object.
*
* @param string $domain Domain to check.
* @param string $path Path to check.
* @param int|null $segments Path segments to use. Defaults to null, or the full path.
* @return WP_Site|false Site object if successful. False when no site is found.
*/
function get_site_by_path( $domain, $path, $segments = null ) {
$path_segments = array_filter( explode( '/', trim( $path, '/' ) ) );
/**
* Filters the number of path segments to consider when searching for a site.
*
* @since 3.9.0
*
* @param int|null $segments The number of path segments to consider. WordPress by default looks at
* one path segment following the network path. The function default of
* null only makes sense when you know the requested path should match a site.
* @param string $domain The requested domain.
* @param string $path The requested path, in full.
*/
$segments = apply_filters( 'site_by_path_segments_count', $segments, $domain, $path );
if ( null !== $segments && count( $path_segments ) > $segments ) {
$path_segments = array_slice( $path_segments, 0, $segments );
}
$paths = array();
while ( count( $path_segments ) ) {
$paths[] = '/' . implode( '/', $path_segments ) . '/';
array_pop( $path_segments );
}
$paths[] = '/';
/**
* Determines a site by its domain and path.
*
* This allows one to short-circuit the default logic, perhaps by
* replacing it with a routine that is more optimal for your setup.
*
* Return null to avoid the short-circuit. Return false if no site
* can be found at the requested domain and path. Otherwise, return
* a site object.
*
* @since 3.9.0
*
* @param null|false|WP_Site $site Site value to return by path. Default null
* to continue retrieving the site.
* @param string $domain The requested domain.
* @param string $path The requested path, in full.
* @param int|null $segments The suggested number of paths to consult.
* Default null, meaning the entire path was to be consulted.
* @param string[] $paths The paths to search for, based on $path and $segments.
*/
$pre = apply_filters( 'pre_get_site_by_path', null, $domain, $path, $segments, $paths );
if ( null !== $pre ) {
if ( false !== $pre && ! $pre instanceof WP_Site ) {
$pre = new WP_Site( $pre );
}
return $pre;
}
/*
* @todo
* Caching, etc. Consider alternative optimization routes,
* perhaps as an opt-in for plugins, rather than using the pre_* filter.
* For example: The segments filter can expand or ignore paths.
* If persistent caching is enabled, we could query the DB for a path <> '/'
* then cache whether we can just always ignore paths.
*/
/*
* Either www or non-www is supported, not both. If a www domain is requested,
* query for both to provide the proper redirect.
*/
$domains = array( $domain );
if ( str_starts_with( $domain, 'www.' ) ) {
$domains[] = substr( $domain, 4 );
}
$args = array(
'number' => 1,
'update_site_meta_cache' => false,
);
if ( count( $domains ) > 1 ) {
$args['domain__in'] = $domains;
$args['orderby']['domain_length'] = 'DESC';
} else {
$args['domain'] = array_shift( $domains );
}
if ( count( $paths ) > 1 ) {
$args['path__in'] = $paths;
$args['orderby']['path_length'] = 'DESC';
} else {
$args['path'] = array_shift( $paths );
}
$result = get_sites( $args );
$site = array_shift( $result );
if ( $site ) {
return $site;
}
return false;
}
/**
* Identifies the network and site of a requested domain and path and populates the
* corresponding network and site global objects as part of the multisite bootstrap process.
*
* Prior to 4.6.0, this was a procedural block in `ms-settings.php`. It was wrapped into
* a function to facilitate unit tests. It should not be used outside of core.
*
* Usually, it's easier to query the site first, which then declares its network.
* In limited situations, we either can or must find the network first.
*
* If a network and site are found, a `true` response will be returned so that the
* request can continue.
*
* If neither a network or site is found, `false` or a URL string will be returned
* so that either an error can be shown or a redirect can occur.
*
* @since 4.6.0
* @access private
*
* @global WP_Network $current_site The current network.
* @global WP_Site $current_blog The current site.
*
* @param string $domain The requested domain.
* @param string $path The requested path.
* @param bool $subdomain Optional. Whether a subdomain (true) or subdirectory (false) configuration.
* Default false.
* @return bool|string True if bootstrap successfully populated `$current_blog` and `$current_site`.
* False if bootstrap could not be properly completed.
* Redirect URL if parts exist, but the request as a whole can not be fulfilled.
*/
function ms_load_current_site_and_network( $domain, $path, $subdomain = false ) {
global $current_site, $current_blog;
// If the network is defined in wp-config.php, we can simply use that.
if ( defined( 'DOMAIN_CURRENT_SITE' ) && defined( 'PATH_CURRENT_SITE' ) ) {
$current_site = new stdClass();
$current_site->id = defined( 'SITE_ID_CURRENT_SITE' ) ? SITE_ID_CURRENT_SITE : 1;
$current_site->domain = DOMAIN_CURRENT_SITE;
$current_site->path = PATH_CURRENT_SITE;
if ( defined( 'BLOG_ID_CURRENT_SITE' ) ) {
$current_site->blog_id = BLOG_ID_CURRENT_SITE;
} elseif ( defined( 'BLOGID_CURRENT_SITE' ) ) { // Deprecated.
$current_site->blog_id = BLOGID_CURRENT_SITE;
}
if ( 0 === strcasecmp( $current_site->domain, $domain ) && 0 === strcasecmp( $current_site->path, $path ) ) {
$current_blog = get_site_by_path( $domain, $path );
} elseif ( '/' !== $current_site->path && 0 === strcasecmp( $current_site->domain, $domain ) && 0 === stripos( $path, $current_site->path ) ) {
/*
* If the current network has a path and also matches the domain and path of the request,
* we need to look for a site using the first path segment following the network's path.
*/
$current_blog = get_site_by_path( $domain, $path, 1 + count( explode( '/', trim( $current_site->path, '/' ) ) ) );
} else {
// Otherwise, use the first path segment (as usual).
$current_blog = get_site_by_path( $domain, $path, 1 );
}
} elseif ( ! $subdomain ) {
/*
* A "subdomain" installation can be re-interpreted to mean "can support any domain".
* If we're not dealing with one of these installations, then the important part is determining
* the network first, because we need the network's path to identify any sites.
*/
$current_site = wp_cache_get( 'current_network', 'site-options' );
if ( ! $current_site ) {
// Are there even two networks installed?
$networks = get_networks( array( 'number' => 2 ) );
if ( count( $networks ) === 1 ) {
$current_site = array_shift( $networks );
wp_cache_add( 'current_network', $current_site, 'site-options' );
} elseif ( empty( $networks ) ) {
// A network not found hook should fire here.
return false;
}
}
if ( empty( $current_site ) ) {
$current_site = WP_Network::get_by_path( $domain, $path, 1 );
}
if ( empty( $current_site ) ) {
/**
* Fires when a network cannot be found based on the requested domain and path.
*
* At the time of this action, the only recourse is to redirect somewhere
* and exit. If you want to declare a particular network, do so earlier.
*
* @since 4.4.0
*
* @param string $domain The domain used to search for a network.
* @param string $path The path used to search for a path.
*/
do_action( 'ms_network_not_found', $domain, $path );
return false;
} elseif ( $path === $current_site->path ) {
$current_blog = get_site_by_path( $domain, $path );
} else {
// Search the network path + one more path segment (on top of the network path).
$current_blog = get_site_by_path( $domain, $path, substr_count( $current_site->path, '/' ) );
}
} else {
// Find the site by the domain and at most the first path segment.
$current_blog = get_site_by_path( $domain, $path, 1 );
if ( $current_blog ) {
$current_site = WP_Network::get_instance( $current_blog->site_id ? $current_blog->site_id : 1 );
} else {
// If you don't have a site with the same domain/path as a network, you're pretty screwed, but:
$current_site = WP_Network::get_by_path( $domain, $path, 1 );
}
}
// The network declared by the site trumps any constants.
if ( $current_blog && (int) $current_blog->site_id !== $current_site->id ) {
$current_site = WP_Network::get_instance( $current_blog->site_id );
}
// No network has been found, bail.
if ( empty( $current_site ) ) {
/** This action is documented in wp-includes/ms-settings.php */
do_action( 'ms_network_not_found', $domain, $path );
return false;
}
// During activation of a new subdomain, the requested site does not yet exist.
if ( empty( $current_blog ) && wp_installing() ) {
$current_blog = new stdClass();
$current_blog->blog_id = 1;
$blog_id = 1;
$current_blog->public = 1;
}
// No site has been found, bail.
if ( empty( $current_blog ) ) {
// We're going to redirect to the network URL, with some possible modifications.
$scheme = is_ssl() ? 'https' : 'http';
$destination = "$scheme://{$current_site->domain}{$current_site->path}";
/**
* Fires when a network can be determined but a site cannot.
*
* At the time of this action, the only recourse is to redirect somewhere
* and exit. If you want to declare a particular site, do so earlier.
*
* @since 3.9.0
*
* @param WP_Network $current_site The network that had been determined.
* @param string $domain The domain used to search for a site.
* @param string $path The path used to search for a site.
*/
do_action( 'ms_site_not_found', $current_site, $domain, $path );
if ( $subdomain && ! defined( 'NOBLOGREDIRECT' ) ) {
// For a "subdomain" installation, redirect to the signup form specifically.
$destination .= 'wp-signup.php?new=' . str_replace( '.' . $current_site->domain, '', $domain );
} elseif ( $subdomain ) {
/*
* For a "subdomain" installation, the NOBLOGREDIRECT constant
* can be used to avoid a redirect to the signup form.
* Using the ms_site_not_found action is preferred to the constant.
*/
if ( '%siteurl%' !== NOBLOGREDIRECT ) {
$destination = NOBLOGREDIRECT;
}
} elseif ( 0 === strcasecmp( $current_site->domain, $domain ) ) {
/*
* If the domain we were searching for matches the network's domain,
* it's no use redirecting back to ourselves -- it'll cause a loop.
* As we couldn't find a site, we're simply not installed.
*/
return false;
}
return $destination;
}
// Figure out the current network's main site.
if ( empty( $current_site->blog_id ) ) {
$current_site->blog_id = get_main_site_id( $current_site->id );
}
return true;
}
/**
* Displays a failure message.
*
* Used when a blog's tables do not exist. Checks for a missing $wpdb->site table as well.
*
* @access private
* @since 3.0.0
* @since 4.4.0 The `$domain` and `$path` parameters were added.
*
* @global wpdb $wpdb WordPress database abstraction object.
*
* @param string $domain The requested domain for the error to reference.
* @param string $path The requested path for the error to reference.
*/
function ms_not_installed( $domain, $path ) {
global $wpdb;
if ( ! is_admin() ) {
dead_db();
}
wp_load_translations_early();
$title = __( 'Error establishing a database connection' );
$msg = '<h1>' . $title . '</h1>';
$msg .= '<p>' . __( 'If your site does not display, please contact the owner of this network.' ) . '';
$msg .= ' ' . __( 'If you are the owner of this network please check that your host’s database server is running properly and all tables are error free.' ) . '</p>';
$query = $wpdb->prepare( 'SHOW TABLES LIKE %s', $wpdb->esc_like( $wpdb->site ) );
if ( ! $wpdb->get_var( $query ) ) {
$msg .= '<p>' . sprintf(
/* translators: %s: Table name. */
__( '<strong>Database tables are missing.</strong> This means that your host’s database server is not running, WordPress was not installed properly, or someone deleted %s. You really should look at your database now.' ),
'<code>' . $wpdb->site . '</code>'
) . '</p>';
} else {
$msg .= '<p>' . sprintf(
/* translators: 1: Site URL, 2: Table name, 3: Database name. */
__( '<strong>Could not find site %1$s.</strong> Searched for table %2$s in database %3$s. Is that right?' ),
'<code>' . rtrim( $domain . $path, '/' ) . '</code>',
'<code>' . $wpdb->blogs . '</code>',
'<code>' . DB_NAME . '</code>'
) . '</p>';
}
$msg .= '<p><strong>' . __( 'What do I do now?' ) . '</strong> ';
$msg .= sprintf(
/* translators: %s: Documentation URL. */
__( 'Read the <a href="%s" target="_blank">Debugging a WordPress Network</a> article. Some of the suggestions there may help you figure out what went wrong.' ),
__( 'https://developer.wordpress.org/advanced-administration/debug/debug-network/' )
);
$msg .= ' ' . __( 'If you are still stuck with this message, then check that your database contains the following tables:' ) . '</p><ul>';
foreach ( $wpdb->tables( 'global' ) as $t => $table ) {
if ( 'sitecategories' === $t ) {
continue;
}
$msg .= '<li>' . $table . '</li>';
}
$msg .= '</ul>';
wp_die( $msg, $title, array( 'response' => 500 ) );
}
/**
* This deprecated function formerly set the site_name property of the $current_site object.
*
* This function simply returns the object, as before.
* The bootstrap takes care of setting site_name.
*
* @access private
* @since 3.0.0
* @deprecated 3.9.0 Use get_current_site() instead.
*
* @param WP_Network $current_site
* @return WP_Network
*/
function get_current_site_name( $current_site ) {
_deprecated_function( __FUNCTION__, '3.9.0', 'get_current_site()' );
return $current_site;
}
/**
* This deprecated function managed much of the site and network loading in multisite.
*
* The current bootstrap code is now responsible for parsing the site and network load as
* well as setting the global $current_site object.
*
* @access private
* @since 3.0.0
* @deprecated 3.9.0
*
* @global WP_Network $current_site
*
* @return WP_Network
*/
function wpmu_current_site() {
global $current_site;
_deprecated_function( __FUNCTION__, '3.9.0' );
return $current_site;
}
/**
* Retrieves an object containing information about the requested network.
*
* @since 3.9.0
* @deprecated 4.7.0 Use get_network()
* @see get_network()
*
* @internal In 4.6.0, converted to use get_network()
*
* @param object|int $network The network's database row or ID.
* @return WP_Network|false Object containing network information if found, false if not.
*/
function wp_get_network( $network ) {
_deprecated_function( __FUNCTION__, '4.7.0', 'get_network()' );
$network = get_network( $network );
if ( null === $network ) {
return false;
}
return $network;
}
كتبت شروق عارف
مع التطور الهائل في تقنيات الذكاء الاصطناعي أصبح هذا المجال ساحة تنافس شرسة خاصة بين الولايات المتحدة والصين لم تعد الدول تنظر إلى الذكاء الاصطناعي كأداة مساعدة فقط بل كقوة عظيمة تحدد ملامح المستقبل وتمنح الأفضلية لمن يتفوق فيه على الساحة العالمية فما هي أبرز التطورات الأخيرة في مجال الذكاء الاصطناعي بين الولايات المتحدة والصين؟
في البداية، تصدرت الولايات المتحدة المشهد عبر نظام ChatGPT الذي طورته شركة OpenAI والذي أحدث ثورة في عالم الذكاء الاصطناعي التفاعلي. لكن الصين لم تلبث أن ردت بقوة من خلال نظام DeepSeek V3، الذي سرعان ما تصدر قائمة التنزيلات في الولايات المتحدة، متفوق على ChatGPT في بعض الجوانب مما أعاد إشعال المنافسة مجددا
Deep Seek منافس قوي لكنه ما زال تحت التجربة
يرى الدكتور إبراهيم عبد الله أستاذ تكنولوجيا المعلومات في المعاهد العليا للدراسات النوعية إن منصة DeepSeek تقدم خدمات قوية ومجانية قد تدفع البعض لتفضيلها على ChatGPT لكنها لا تزال تحت التجربة، ولا يمكن الاعتماد عليها كليًا في الوقت الحالي وأضاف أن دعم البرمجيات مفتوحة المصدر يمثل فرصة مهمة للتطوير والابتكار لكن استخدامها يجب أن يتم بحذر وذلك لتجنب أي تهديدات أمنية محتمل
أبرز الاختلافات بين ChatGPT وDeep Seek
بحسب ما ورد في موقع click up وما ذكره ماركو ممدوح يعتبر Deep Seek نموذج ذكي من تطوير شركة صينية الذي أسسها رجل الأعمال لينج وينفينج ويعتمد على أكثر من 37 مليار معلومة وذلك يمنحه دقة عالية في الإجابة يتميز بأنه مجاني بالكامل ويدعم أكثر من 95 لغة من بينها العربية حيث يظهر اداء قوي قد يتفوق علي ChatGPT في بعض الأحيان
أما ChatGPT فهو من تطوير شركة OpenAI الأمريكية وانطلق في نوفمبر 2022 بدعم من شركة مايكروسوفت يشتهر بقدرته على التفاعل بلغة طبيعي وتميزه في الكتابة الإبداعية وصناعة الصور وتحويل النصوص إلى صوت. ومع ذلك فإن نسخته الأقوى GPT-4 تتطلب اشتراك مدفوع
أيهما يتفوق
رغم أن ChatGPT يتميز بالتفاعل الواسع والإبداع في اللغة إلا أن Deep Seek يتفوق عليه في تحليل البيانات، التفكير المنطقي والرياضيات بالإضافة إلى دعمه القوي للبرمجيات مفتوحة المصدر كما يمنح المستخدمين تحكم كامل في بياناتهم في مقابل بيئة مغلقة نسبيا في ChatGPT
لكن Deep Seek لم يسلم من الانتقادات خاصة بعد كشف تقارير عن ثغرات أمنية خطيرة، منها تعطيل أنظمة تشفير على أجهزة iPhone واستخدام تقنيات قديمة قالت هيئة حماية البيانات الإيطالية أنها حظرت نموذج DeepSeek من استخدامه كما حذّرت دول مثل تايوان من استخدامه خوفًا من تسريب بيانات حساسة في المقابل يواجه ChatGPT تحديات تتعلق بالدقة والتحيز السياسي أحيانا وعدم تقديمه دائما معلومات مكتملة أو صحيحة بالإضافة إلى إمكانية تجاوزه لقيود الأمان وذلك من خلال إعادة صياغة الأسئلة
Deep Seek ينافس بقوة و لكن ChatGPTيتفوق في الأداء
من جانبه يرى عمر عاطف خبير التكنولوجيا أن الذكاء الاصطناعي أصبح منافس حقيقي في عدة مجالات سواء في كتابة المحتوى أو تحليل البيانات أو حتى التعليم، ومع ظهور أدوات مثل DeepSeek أصبح المستخدم أمام خيارات متعددة تتيح له تجربة تقنيات متقدمة بشكل مجاني وأشار إلى أن رغم قوة هذه الأدوات فإن ChatGPT لا يزال متفوق من حيث الأداء ودقة النتائج خاصة في النسخ المدفوعة التي توفر ميزات أوسع لكن المنافسة تدفع الجميع للتطوير باستمرار
ولكن يبقى الرهان الحقيقي بين عمالقة الذكاء الاصطناعي على من يستطيع تلبية احتياجات المستخدمين بذكاء وأمان وأفضل الإمكانيات في ان واحد
