network_step2 ( $errors = false )
network_step2:這個動作鉤子在網路設定過程的第二步被觸發。
列印網路安裝過程的步驟2。
function network_step2( $errors = false ) {
global $wpdb, $is_nginx;
$hostname = get_clean_basedomain();
$slashed_home = trailingslashit( get_option( 'home' ) );
$base = parse_url( $slashed_home, PHP_URL_PATH );
$document_root_fix = str_replace( '\', '/', realpath( $_SERVER['DOCUMENT_ROOT'] ) );
$abspath_fix = str_replace( '\', '/', ABSPATH );
$home_path = 0 === strpos( $abspath_fix, $document_root_fix ) ? $document_root_fix . $base : get_home_path();
$wp_siteurl_subdir = preg_replace( '#^' . preg_quote( $home_path, '#' ) . '#', '', $abspath_fix );
$rewrite_base = ! empty( $wp_siteurl_subdir ) ? ltrim( trailingslashit( $wp_siteurl_subdir ), '/' ) : '';
$location_of_wp_config = $abspath_fix;
if ( ! file_exists( ABSPATH . 'wp-config.php' ) && file_exists( dirname( ABSPATH ) . '/wp-config.php' ) ) {
$location_of_wp_config = dirname( $abspath_fix );
}
$location_of_wp_config = trailingslashit( $location_of_wp_config );
// Wildcard DNS message.
if ( is_wp_error( $errors ) ) {
echo '<div class="error">' . $errors->get_error_message() . '</div>';
}
if ( $_POST ) {
if ( allow_subdomain_install() ) {
$subdomain_install = allow_subdirectory_install() ? ! empty( $_POST['subdomain_install'] ) : true;
} else {
$subdomain_install = false;
}
} else {
if ( is_multisite() ) {
$subdomain_install = is_subdomain_install();
?>
<p><?php _e( 'The original configuration steps are shown here for reference.' ); ?></p>
<?php
} else {
$subdomain_install = (bool) $wpdb->get_var( "SELECT meta_value FROM $wpdb->sitemeta WHERE site_id = 1 AND meta_key = 'subdomain_install'" );
?>
<div class="error"><p><strong><?php _e( 'Warning:' ); ?></strong> <?php _e( 'An existing WordPress network was detected.' ); ?></p></div>
<p><?php _e( 'Please complete the configuration steps. To create a new network, you will need to empty or remove the network database tables.' ); ?></p>
<?php
}
}
$subdir_match = $subdomain_install ? '' : '([_0-9a-zA-Z-]+/)?';
$subdir_replacement_01 = $subdomain_install ? '' : '$1';
$subdir_replacement_12 = $subdomain_install ? '$1' : '$2';
if ( $_POST || ! is_multisite() ) {
?>
<h3><?php esc_html_e( 'Enabling the Network' ); ?></h3>
<p><?php _e( 'Complete the following steps to enable the features for creating a network of sites.' ); ?></p>
<div class="notice notice-warning inline"><p>
<?php
if ( file_exists( $home_path . '.htaccess' ) ) {
echo '<strong>' . __( 'Caution:' ) . '</strong> ';
printf(
/* translators: 1: wp-config.php, 2: .htaccess */
__( 'You should back up your existing %1$s and %2$s files.' ),
'<code>wp-config.php</code>',
'<code>.htaccess</code>'
);
} elseif ( file_exists( $home_path . 'web.config' ) ) {
echo '<strong>' . __( 'Caution:' ) . '</strong> ';
printf(
/* translators: 1: wp-config.php, 2: web.config */
__( 'You should back up your existing %1$s and %2$s files.' ),
'<code>wp-config.php</code>',
'<code>web.config</code>'
);
} else {
echo '<strong>' . __( 'Caution:' ) . '</strong> ';
printf(
/* translators: %s: wp-config.php */
__( 'You should back up your existing %s file.' ),
'<code>wp-config.php</code>'
);
}
?>
</p></div>
<?php
}
?>
<ol>
<li><p id="network-wpconfig-rules-description">
<?php
printf(
/* translators: 1: wp-config.php, 2: Location of wp-config file, 3: Translated version of "That's all, stop editing! Happy publishing." */
__( 'Add the following to your %1$s file in %2$s <strong>above</strong> the line reading %3$s:' ),
'<code>wp-config.php</code>',
'<code>' . $location_of_wp_config . '</code>',
/*
* translators: This string should only be translated if wp-config-sample.php is localized.
* You can check the localized release package or
* https://i18n.svn.wordpress.org/<locale code>/branches/<wp version>/dist/wp-config-sample.php
*/
'<code>/* ' . __( 'That’s all, stop editing! Happy publishing.' ) . ' */</code>'
);
?>
</p>
<p class="configuration-rules-label"><label for="network-wpconfig-rules">
<?php
printf(
/* translators: %s: File name (wp-config.php, .htaccess or web.config). */
__( 'Network configuration rules for %s' ),
'<code>wp-config.php</code>'
);
?>
</label></p>
<textarea id="network-wpconfig-rules" class="code" readonly="readonly" cols="100" rows="7" aria-describedby="network-wpconfig-rules-description">
define( 'MULTISITE', true );
define( 'SUBDOMAIN_INSTALL', <?php echo $subdomain_install ? 'true' : 'false'; ?> );
define( 'DOMAIN_CURRENT_SITE', '<?php echo $hostname; ?>' );
define( 'PATH_CURRENT_SITE', '<?php echo $base; ?>' );
define( 'SITE_ID_CURRENT_SITE', 1 );
define( 'BLOG_ID_CURRENT_SITE', 1 );
</textarea>
<?php
$keys_salts = array(
'AUTH_KEY' => '',
'SECURE_AUTH_KEY' => '',
'LOGGED_IN_KEY' => '',
'NONCE_KEY' => '',
'AUTH_SALT' => '',
'SECURE_AUTH_SALT' => '',
'LOGGED_IN_SALT' => '',
'NONCE_SALT' => '',
);
foreach ( $keys_salts as $c => $v ) {
if ( defined( $c ) ) {
unset( $keys_salts[ $c ] );
}
}
if ( ! empty( $keys_salts ) ) {
$keys_salts_str = '';
$from_api = wp_remote_get( 'https://api.wordpress.org/secret-key/1.1/salt/' );
if ( is_wp_error( $from_api ) ) {
foreach ( $keys_salts as $c => $v ) {
$keys_salts_str .= "ndefine( '$c', '" . wp_generate_password( 64, true, true ) . "' );";
}
} else {
$from_api = explode( "n", wp_remote_retrieve_body( $from_api ) );
foreach ( $keys_salts as $c => $v ) {
$keys_salts_str .= "ndefine( '$c', '" . substr( array_shift( $from_api ), 28, 64 ) . "' );";
}
}
$num_keys_salts = count( $keys_salts );
?>
<p id="network-wpconfig-authentication-description">
<?php
if ( 1 === $num_keys_salts ) {
printf(
/* translators: %s: wp-config.php */
__( 'This unique authentication key is also missing from your %s file.' ),
'<code>wp-config.php</code>'
);
} else {
printf(
/* translators: %s: wp-config.php */
__( 'These unique authentication keys are also missing from your %s file.' ),
'<code>wp-config.php</code>'
);
}
?>
<?php _e( 'To make your installation more secure, you should also add:' ); ?>
</p>
<p class="configuration-rules-label"><label for="network-wpconfig-authentication"><?php _e( 'Network configuration authentication keys' ); ?></label></p>
<textarea id="network-wpconfig-authentication" class="code" readonly="readonly" cols="100" rows="<?php echo $num_keys_salts; ?>" aria-describedby="network-wpconfig-authentication-description"><?php echo esc_textarea( $keys_salts_str ); ?></textarea>
<?php
}
?>
</li>
<?php
if ( iis7_supports_permalinks() ) :
// IIS doesn't support RewriteBase, all your RewriteBase are belong to us.
$iis_subdir_match = ltrim( $base, '/' ) . $subdir_match;
$iis_rewrite_base = ltrim( $base, '/' ) . $rewrite_base;
$iis_subdir_replacement = $subdomain_install ? '' : '{R:1}';
$web_config_file = '<?xml version="1.0" encoding="UTF-8"?>
<configuration>
<system.webServer>
<rewrite>
<rules>
<rule name="WordPress Rule 1" stopProcessing="true">
<match url="^index.php$" ignoreCase="false" />
<action type="None" />
</rule>';
if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) {
$web_config_file .= '
<rule name="WordPress Rule for Files" stopProcessing="true">
<match url="^' . $iis_subdir_match . 'files/(.+)" ignoreCase="false" />
<action type="Rewrite" url="' . $iis_rewrite_base . WPINC . '/ms-files.php?file={R:1}" appendQueryString="false" />
</rule>';
}
$web_config_file .= '
<rule name="WordPress Rule 2" stopProcessing="true">
<match url="^' . $iis_subdir_match . 'wp-admin$" ignoreCase="false" />
<action type="Redirect" url="' . $iis_subdir_replacement . 'wp-admin/" redirectType="Permanent" />
</rule>
<rule name="WordPress Rule 3" stopProcessing="true">
<match url="^" ignoreCase="false" />
<conditions logicalGrouping="MatchAny">
<add input="{REQUEST_FILENAME}" matchType="IsFile" ignoreCase="false" />
<add input="{REQUEST_FILENAME}" matchType="IsDirectory" ignoreCase="false" />
</conditions>
<action type="None" />
</rule>
<rule name="WordPress Rule 4" stopProcessing="true">
<match url="^' . $iis_subdir_match . '(wp-(content|admin|includes).*)" ignoreCase="false" />
<action type="Rewrite" url="' . $iis_rewrite_base . '{R:1}" />
</rule>
<rule name="WordPress Rule 5" stopProcessing="true">
<match url="^' . $iis_subdir_match . '([_0-9a-zA-Z-]+/)?(.*.php)$" ignoreCase="false" />
<action type="Rewrite" url="' . $iis_rewrite_base . '{R:2}" />
</rule>
<rule name="WordPress Rule 6" stopProcessing="true">
<match url="." ignoreCase="false" />
<action type="Rewrite" url="index.php" />
</rule>
</rules>
</rewrite>
</system.webServer>
</configuration>
';
echo '<li><p id="network-webconfig-rules-description">';
printf(
/* translators: 1: File name (.htaccess or web.config), 2: File path. */
__( 'Add the following to your %1$s file in %2$s, <strong>replacing</strong> other WordPress rules:' ),
'<code>web.config</code>',
'<code>' . $home_path . '</code>'
);
echo '</p>';
if ( ! $subdomain_install && WP_CONTENT_DIR !== ABSPATH . 'wp-content' ) {
echo '<p><strong>' . __( 'Warning:' ) . ' ' . __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' ) . '</strong></p>';
}
?>
<p class="configuration-rules-label"><label for="network-webconfig-rules">
<?php
printf(
/* translators: %s: File name (wp-config.php, .htaccess or web.config). */
__( 'Network configuration rules for %s' ),
'<code>web.config</code>'
);
?>
</label></p>
<textarea id="network-webconfig-rules" class="code" readonly="readonly" cols="100" rows="20" aria-describedby="network-webconfig-rules-description"><?php echo esc_textarea( $web_config_file ); ?></textarea>
</li>
</ol>
<?php
elseif ( $is_nginx ) : // End iis7_supports_permalinks(). Link to Nginx documentation instead:
echo '<li><p>';
printf(
/* translators: %s: Documentation URL. */
__( 'It seems your network is running with Nginx web server. <a href="%s">Learn more about further configuration</a>.' ),
__( 'https://wordpress.org/support/article/nginx/' )
);
echo '</p></li>';
else : // End $is_nginx. Construct an .htaccess file instead:
$ms_files_rewriting = '';
if ( is_multisite() && get_site_option( 'ms_files_rewriting' ) ) {
$ms_files_rewriting = "n# uploaded filesnRewriteRule ^";
$ms_files_rewriting .= $subdir_match . "files/(.+) {$rewrite_base}" . WPINC . "/ms-files.php?file={$subdir_replacement_12} [L]" . "n";
}
$htaccess_file = <<<EOF
RewriteEngine On
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
RewriteBase {$base}
RewriteRule ^index.php$ - [L]
{$ms_files_rewriting}
# add a trailing slash to /wp-admin
RewriteRule ^{$subdir_match}wp-admin$ {$subdir_replacement_01}wp-admin/ [R=301,L]
RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^{$subdir_match}(wp-(content|admin|includes).*) {$rewrite_base}{$subdir_replacement_12} [L]
RewriteRule ^{$subdir_match}(.*.php)$ {$rewrite_base}$subdir_replacement_12 [L]
RewriteRule . index.php [L]
EOF;
echo '<li><p id="network-htaccess-rules-description">';
printf(
/* translators: 1: File name (.htaccess or web.config), 2: File path. */
__( 'Add the following to your %1$s file in %2$s, <strong>replacing</strong> other WordPress rules:' ),
'<code>.htaccess</code>',
'<code>' . $home_path . '</code>'
);
echo '</p>';
if ( ! $subdomain_install && WP_CONTENT_DIR !== ABSPATH . 'wp-content' ) {
echo '<p><strong>' . __( 'Warning:' ) . ' ' . __( 'Subdirectory networks may not be fully compatible with custom wp-content directories.' ) . '</strong></p>';
}
?>
<p class="configuration-rules-label"><label for="network-htaccess-rules">
<?php
printf(
/* translators: %s: File name (wp-config.php, .htaccess or web.config). */
__( 'Network configuration rules for %s' ),
'<code>.htaccess</code>'
);
?>
</label></p>
<textarea id="network-htaccess-rules" class="code" readonly="readonly" cols="100" rows="<?php echo substr_count( $htaccess_file, "n" ) + 1; ?>" aria-describedby="network-htaccess-rules-description"><?php echo esc_textarea( $htaccess_file ); ?></textarea>
</li>
</ol>
<?php
endif; // End IIS/Nginx/Apache code branches.
if ( ! is_multisite() ) {
?>
<p><?php _e( 'Once you complete these steps, your network is enabled and configured. You will have to log in again.' ); ?> <a href="<?php echo esc_url( wp_login_url() ); ?>"><?php _e( 'Log In' ); ?></a></p>
<?php
}
}
要使用` get_users `函式獲取所有使用者列表,可以按照以下步驟進行:
1. 使用` get_users `函式呼叫獲取使用者列表:
$users = get_users();
2. 您可以按需使用引數來過濾結果。例如,您可以通過角色、使用者ID、使用者登入名等過濾使用者列表。以下是一個根據使用者角色為過濾條件的示例:
$users = get_users( array(
'role' => 'subscriber' // 將角色名稱替換為您要過濾的角色
) );
在上述示例中,將` role `引數設定為所需的角色名稱來過濾使用者列表。
3. 您可以使用迴圈遍歷獲取的使用者列表,並訪問每個使用者的屬性。例如,以下示例將顯示每個使用者的使用者名稱和電子郵件地址:
foreach( $users as $user ) {
echo '使用者名稱:' . $user->user_login . ', 電子郵件:' . $user->user_email . ;
}
在上述示例中,通過` $user->user_login `和` $user->user_email `訪問每個使用者的使用者名稱和電子郵件地址。
請注意,` get_users `函式預設返回所有使用者,並可以根據需要使用更多引數進行過濾。您可以參閱WordPress官方文件中的` get_users `函式文件,瞭解更多可用引數和用法示例。
總結起來,使用` get_users `函式獲取所有使用者列表的步驟是:
get_users `函式獲取使用者列表。在WordPress中,可以使用WP_PLUGIN_DIR和WP_PLUGIN_URL常量來定義外掛的目錄路徑和URL。
1. `WP_PLUGIN_DIR`:這是一個常量,用於定義外掛的目錄路徑(檔案系統路徑)。您可以使用以下程式碼在外掛檔案中訪問該常量:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/';
在上述程式碼中,將"your-plugin-folder"替換為您外掛的實際資料夾名稱。使用該常量,您可以獲取外掛檔案的完整路徑。
2. `WP_PLUGIN_URL`:這是一個常量,用於定義外掛的URL(用於在網頁上訪問外掛檔案)。以下是一個使用該常量的示例:
$plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
同樣,請將"your-plugin-folder"替換為您外掛的實際資料夾名稱。使用該常量,您可以獲取外掛在網頁上的完整URL。
請注意,`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量在WordPress版本2.6之後引入。從WordPress 5.5版本開始,這兩個常量被標記為過時(deprecated),因為WordPress更傾向於使用新的外掛檔案結構。如果您正在開發新外掛,建議使用新的外掛檔案結構和相關函式。
在新的外掛檔案結構中,可以使用以下函式來獲取外掛的目錄路徑和URL:
- `plugin_dir_path()`:獲取外掛目錄路徑。
- `plugin_dir_url()`:獲取外掛URL。
這些函式會自動將外掛的版本、多站點和SSL等考慮因素納入計算。
總結起來,使用`WP_PLUGIN_DIR`和`WP_PLUGIN_URL`常量定義外掛的目錄和URL的方法是:
$plugin_dir = WP_PLUGIN_DIR . '/your-plugin-folder/'; $plugin_url = WP_PLUGIN_URL . '/your-plugin-folder/';
但請注意,這兩個常量已被標記為過時,建議使用新的外掛檔案結構和相關函式來獲取外掛的路徑和URL。
使用PHP在WordPress中新增自定義功能可以通過以下方式實現:
下面是一個實操示例。
要在WordPress中新增自定義功能,可以按照以下步驟使用PHP編寫並新增自定義功能:
// 新增自定義功能示例
// 1. 建立自定義短程式碼
function custom_shortcode() {
return '這是我的自定義短程式碼內容';
}
add_shortcode('custom', 'custom_shortcode');
// 2. 自定義小工具
function custom_widget() {
echo '這是我的自定義小工具內容';
}
register_widget('custom_widget');
// 3. 自定義選單
function custom_menu() {
register_nav_menu('custom-menu', '自定義選單');
}
add_action('after_setup_theme', 'custom_menu');
// 4. 自定義頁面模板
function custom_page_template() {
/* Template Name: 自定義模板 */
// 自定義模板的內容和樣式
}
請注意,修改主題檔案可以在主題更新時丟失,因此建議在進行任何更改之前備份functions.php檔案。此外,為避免不必要的錯誤和衝突,建議在新增自定義功能前先了解WordPress開發文件和最佳實踐,以確保正確、安全地實現所需的自定義功能。
使用 do_action 函式可以觸發一個鉤子函式。do_action 函式的引數與要觸發的鉤子函式的引數相同。
例如,觸發save_post鉤子函式的程式碼如下:
do_action( 'save_post', $post_ID, $post );
這裡,$post_ID 和 $post 是傳遞給鉤子函式的引數。
使用 wp_get_current_user 獲取當前登入使用者的資訊:
$current_user = wp_get_current_user(); // 獲取當前使用者的ID $user_id = $current_user->ID; // 獲取當前使用者的使用者名稱 $user_login = $current_user->user_login; // 獲取當前使用者的郵箱 $user_email = $current_user->user_email; // 獲取當前使用者的顯示名稱 $display_name = $current_user->display_name;