From cbca77642bb2b09aebd08a18f6f5648a3e2db0a8 Mon Sep 17 00:00:00 2001
From: Pascal Birchler <pascal.birchler@gmail.com>
Date: Thu, 5 Dec 2024 12:13:17 +0000
Subject: [PATCH] Plugins: Load `wp-admin/includes/plugin.php` earlier.

Partially reverts [59479] and [59461], which previously tried to move some functions from `wp-admin/includes/plugin.php` to `wp-includes/functions.php` so they are available early, so that `get_plugin_data()` can be used.

However, other functions from that file are often used by plugins without necessarily checking whether they are available, easily causing fatal errors. Requiring this file directly is a safer approach to avoid such errors.

Props peterwilsoncc, dd32, swissspidy, johnbillion.
Fixes #62244.
Built from https://develop.svn.wordpress.org/trunk@59488


git-svn-id: http://core.svn.wordpress.org/trunk@58874 1a063a9b-81f0-0310-95a4-ce76da25c4cd
---
 wp-admin/includes/plugin.php | 306 +++++++++++++++++++++++++++++++++++
 wp-includes/functions.php    | 306 -----------------------------------
 wp-includes/version.php      |   2 +-
 wp-settings.php              |   3 +
 4 files changed, 310 insertions(+), 307 deletions(-)

diff --git a/wp-admin/includes/plugin.php b/wp-admin/includes/plugin.php
index 977801d92b..de1468352b 100644
--- a/wp-admin/includes/plugin.php
+++ b/wp-admin/includes/plugin.php
@@ -6,6 +6,221 @@
  * @subpackage Administration
  */
 
+/**
+ * Parses the plugin contents to retrieve plugin's metadata.
+ *
+ * All plugin headers must be on their own line. Plugin description must not have
+ * any newlines, otherwise only parts of the description will be displayed.
+ * The below is formatted for printing.
+ *
+ *     /*
+ *     Plugin Name: Name of the plugin.
+ *     Plugin URI: The home page of the plugin.
+ *     Description: Plugin description.
+ *     Author: Plugin author's name.
+ *     Author URI: Link to the author's website.
+ *     Version: Plugin version.
+ *     Text Domain: Optional. Unique identifier, should be same as the one used in
+ *          load_plugin_textdomain().
+ *     Domain Path: Optional. Only useful if the translations are located in a
+ *          folder above the plugin's base path. For example, if .mo files are
+ *          located in the locale folder then Domain Path will be "/locale/" and
+ *          must have the first slash. Defaults to the base folder the plugin is
+ *          located in.
+ *     Network: Optional. Specify "Network: true" to require that a plugin is activated
+ *          across all sites in an installation. This will prevent a plugin from being
+ *          activated on a single site when Multisite is enabled.
+ *     Requires at least: Optional. Specify the minimum required WordPress version.
+ *     Requires PHP: Optional. Specify the minimum required PHP version.
+ *     * / # Remove the space to close comment.
+ *
+ * The first 8 KB of the file will be pulled in and if the plugin data is not
+ * within that first 8 KB, then the plugin author should correct their plugin
+ * and move the plugin data headers to the top.
+ *
+ * The plugin file is assumed to have permissions to allow for scripts to read
+ * the file. This is not checked however and the file is only opened for
+ * reading.
+ *
+ * @since 1.5.0
+ * @since 5.3.0 Added support for `Requires at least` and `Requires PHP` headers.
+ * @since 5.8.0 Added support for `Update URI` header.
+ * @since 6.5.0 Added support for `Requires Plugins` header.
+ *
+ * @param string $plugin_file Absolute path to the main plugin file.
+ * @param bool   $markup      Optional. If the returned data should have HTML markup applied.
+ *                            Default true.
+ * @param bool   $translate   Optional. If the returned data should be translated. Default true.
+ * @return array {
+ *     Plugin data. Values will be empty if not supplied by the plugin.
+ *
+ *     @type string $Name            Name of the plugin. Should be unique.
+ *     @type string $PluginURI       Plugin URI.
+ *     @type string $Version         Plugin version.
+ *     @type string $Description     Plugin description.
+ *     @type string $Author          Plugin author's name.
+ *     @type string $AuthorURI       Plugin author's website address (if set).
+ *     @type string $TextDomain      Plugin textdomain.
+ *     @type string $DomainPath      Plugin's relative directory path to .mo files.
+ *     @type bool   $Network         Whether the plugin can only be activated network-wide.
+ *     @type string $RequiresWP      Minimum required version of WordPress.
+ *     @type string $RequiresPHP     Minimum required version of PHP.
+ *     @type string $UpdateURI       ID of the plugin for update purposes, should be a URI.
+ *     @type string $RequiresPlugins Comma separated list of dot org plugin slugs.
+ *     @type string $Title           Title of the plugin and link to the plugin's site (if set).
+ *     @type string $AuthorName      Plugin author's name.
+ * }
+ */
+function get_plugin_data( $plugin_file, $markup = true, $translate = true ) {
+
+	$default_headers = array(
+		'Name'            => 'Plugin Name',
+		'PluginURI'       => 'Plugin URI',
+		'Version'         => 'Version',
+		'Description'     => 'Description',
+		'Author'          => 'Author',
+		'AuthorURI'       => 'Author URI',
+		'TextDomain'      => 'Text Domain',
+		'DomainPath'      => 'Domain Path',
+		'Network'         => 'Network',
+		'RequiresWP'      => 'Requires at least',
+		'RequiresPHP'     => 'Requires PHP',
+		'UpdateURI'       => 'Update URI',
+		'RequiresPlugins' => 'Requires Plugins',
+		// Site Wide Only is deprecated in favor of Network.
+		'_sitewide'       => 'Site Wide Only',
+	);
+
+	$plugin_data = get_file_data( $plugin_file, $default_headers, 'plugin' );
+
+	// Site Wide Only is the old header for Network.
+	if ( ! $plugin_data['Network'] && $plugin_data['_sitewide'] ) {
+		/* translators: 1: Site Wide Only: true, 2: Network: true */
+		_deprecated_argument( __FUNCTION__, '3.0.0', sprintf( __( 'The %1$s plugin header is deprecated. Use %2$s instead.' ), '<code>Site Wide Only: true</code>', '<code>Network: true</code>' ) );
+		$plugin_data['Network'] = $plugin_data['_sitewide'];
+	}
+	$plugin_data['Network'] = ( 'true' === strtolower( $plugin_data['Network'] ) );
+	unset( $plugin_data['_sitewide'] );
+
+	// If no text domain is defined fall back to the plugin slug.
+	if ( ! $plugin_data['TextDomain'] ) {
+		$plugin_slug = dirname( plugin_basename( $plugin_file ) );
+		if ( '.' !== $plugin_slug && ! str_contains( $plugin_slug, '/' ) ) {
+			$plugin_data['TextDomain'] = $plugin_slug;
+		}
+	}
+
+	if ( $markup || $translate ) {
+		$plugin_data = _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup, $translate );
+	} else {
+		$plugin_data['Title']      = $plugin_data['Name'];
+		$plugin_data['AuthorName'] = $plugin_data['Author'];
+	}
+
+	return $plugin_data;
+}
+
+/**
+ * Sanitizes plugin data, optionally adds markup, optionally translates.
+ *
+ * @since 2.7.0
+ *
+ * @see get_plugin_data()
+ *
+ * @access private
+ *
+ * @param string $plugin_file Path to the main plugin file.
+ * @param array  $plugin_data An array of plugin data. See get_plugin_data().
+ * @param bool   $markup      Optional. If the returned data should have HTML markup applied.
+ *                            Default true.
+ * @param bool   $translate   Optional. If the returned data should be translated. Default true.
+ * @return array Plugin data. Values will be empty if not supplied by the plugin.
+ *               See get_plugin_data() for the list of possible values.
+ */
+function _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup = true, $translate = true ) {
+
+	// Sanitize the plugin filename to a WP_PLUGIN_DIR relative path.
+	$plugin_file = plugin_basename( $plugin_file );
+
+	// Translate fields.
+	if ( $translate ) {
+		$textdomain = $plugin_data['TextDomain'];
+		if ( $textdomain ) {
+			if ( ! is_textdomain_loaded( $textdomain ) ) {
+				if ( $plugin_data['DomainPath'] ) {
+					load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) . $plugin_data['DomainPath'] );
+				} else {
+					load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) );
+				}
+			}
+		} elseif ( 'hello.php' === basename( $plugin_file ) ) {
+			$textdomain = 'default';
+		}
+		if ( $textdomain ) {
+			foreach ( array( 'Name', 'PluginURI', 'Description', 'Author', 'AuthorURI', 'Version' ) as $field ) {
+				if ( ! empty( $plugin_data[ $field ] ) ) {
+					// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain
+					$plugin_data[ $field ] = translate( $plugin_data[ $field ], $textdomain );
+				}
+			}
+		}
+	}
+
+	// Sanitize fields.
+	$allowed_tags_in_links = array(
+		'abbr'    => array( 'title' => true ),
+		'acronym' => array( 'title' => true ),
+		'code'    => true,
+		'em'      => true,
+		'strong'  => true,
+	);
+
+	$allowed_tags      = $allowed_tags_in_links;
+	$allowed_tags['a'] = array(
+		'href'  => true,
+		'title' => true,
+	);
+
+	/*
+	 * Name is marked up inside <a> tags. Don't allow these.
+	 * Author is too, but some plugins have used <a> here (omitting Author URI).
+	 */
+	$plugin_data['Name']   = wp_kses( $plugin_data['Name'], $allowed_tags_in_links );
+	$plugin_data['Author'] = wp_kses( $plugin_data['Author'], $allowed_tags );
+
+	$plugin_data['Description'] = wp_kses( $plugin_data['Description'], $allowed_tags );
+	$plugin_data['Version']     = wp_kses( $plugin_data['Version'], $allowed_tags );
+
+	$plugin_data['PluginURI'] = esc_url( $plugin_data['PluginURI'] );
+	$plugin_data['AuthorURI'] = esc_url( $plugin_data['AuthorURI'] );
+
+	$plugin_data['Title']      = $plugin_data['Name'];
+	$plugin_data['AuthorName'] = $plugin_data['Author'];
+
+	// Apply markup.
+	if ( $markup ) {
+		if ( $plugin_data['PluginURI'] && $plugin_data['Name'] ) {
+			$plugin_data['Title'] = '<a href="' . $plugin_data['PluginURI'] . '">' . $plugin_data['Name'] . '</a>';
+		}
+
+		if ( $plugin_data['AuthorURI'] && $plugin_data['Author'] ) {
+			$plugin_data['Author'] = '<a href="' . $plugin_data['AuthorURI'] . '">' . $plugin_data['Author'] . '</a>';
+		}
+
+		$plugin_data['Description'] = wptexturize( $plugin_data['Description'] );
+
+		if ( $plugin_data['Author'] ) {
+			$plugin_data['Description'] .= sprintf(
+				/* translators: %s: Plugin author. */
+				' <cite>' . __( 'By %s.' ) . '</cite>',
+				$plugin_data['Author']
+			);
+		}
+	}
+
+	return $plugin_data;
+}
+
 /**
  * Gets a list of a plugin's files.
  *
@@ -304,6 +519,97 @@ function _get_dropins() {
 	return $dropins;
 }
 
+/**
+ * Determines whether a plugin is active.
+ *
+ * Only plugins installed in the plugins/ folder can be active.
+ *
+ * Plugins in the mu-plugins/ folder can't be "activated," so this function will
+ * return false for those plugins.
+ *
+ * For more information on this and similar theme functions, check out
+ * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
+ * Conditional Tags} article in the Theme Developer Handbook.
+ *
+ * @since 2.5.0
+ *
+ * @param string $plugin Path to the plugin file relative to the plugins directory.
+ * @return bool True, if in the active plugins list. False, not in the list.
+ */
+function is_plugin_active( $plugin ) {
+	return in_array( $plugin, (array) get_option( 'active_plugins', array() ), true ) || is_plugin_active_for_network( $plugin );
+}
+
+/**
+ * Determines whether the plugin is inactive.
+ *
+ * Reverse of is_plugin_active(). Used as a callback.
+ *
+ * For more information on this and similar theme functions, check out
+ * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
+ * Conditional Tags} article in the Theme Developer Handbook.
+ *
+ * @since 3.1.0
+ *
+ * @see is_plugin_active()
+ *
+ * @param string $plugin Path to the plugin file relative to the plugins directory.
+ * @return bool True if inactive. False if active.
+ */
+function is_plugin_inactive( $plugin ) {
+	return ! is_plugin_active( $plugin );
+}
+
+/**
+ * Determines whether the plugin is active for the entire network.
+ *
+ * Only plugins installed in the plugins/ folder can be active.
+ *
+ * Plugins in the mu-plugins/ folder can't be "activated," so this function will
+ * return false for those plugins.
+ *
+ * For more information on this and similar theme functions, check out
+ * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
+ * Conditional Tags} article in the Theme Developer Handbook.
+ *
+ * @since 3.0.0
+ *
+ * @param string $plugin Path to the plugin file relative to the plugins directory.
+ * @return bool True if active for the network, otherwise false.
+ */
+function is_plugin_active_for_network( $plugin ) {
+	if ( ! is_multisite() ) {
+		return false;
+	}
+
+	$plugins = get_site_option( 'active_sitewide_plugins' );
+	if ( isset( $plugins[ $plugin ] ) ) {
+		return true;
+	}
+
+	return false;
+}
+
+/**
+ * Checks for "Network: true" in the plugin header to see if this should
+ * be activated only as a network wide plugin. The plugin would also work
+ * when Multisite is not enabled.
+ *
+ * Checks for "Site Wide Only: true" for backward compatibility.
+ *
+ * @since 3.0.0
+ *
+ * @param string $plugin Path to the plugin file relative to the plugins directory.
+ * @return bool True if plugin is network only, false otherwise.
+ */
+function is_network_only_plugin( $plugin ) {
+	$plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );
+	if ( $plugin_data ) {
+		return $plugin_data['Network'];
+	}
+	return false;
+}
+
 /**
  * Attempts activation of plugin in a "sandbox" and redirects on success.
  *
diff --git a/wp-includes/functions.php b/wp-includes/functions.php
index 44f908a301..7e46dd53ca 100644
--- a/wp-includes/functions.php
+++ b/wp-includes/functions.php
@@ -6930,312 +6930,6 @@ function get_file_data( $file, $default_headers, $context = '' ) {
 	return $all_headers;
 }
 
-/**
- * Parses the plugin contents to retrieve plugin's metadata.
- *
- * All plugin headers must be on their own line. Plugin description must not have
- * any newlines, otherwise only parts of the description will be displayed.
- * The below is formatted for printing.
- *
- *     /*
- *     Plugin Name: Name of the plugin.
- *     Plugin URI: The home page of the plugin.
- *     Description: Plugin description.
- *     Author: Plugin author's name.
- *     Author URI: Link to the author's website.
- *     Version: Plugin version.
- *     Text Domain: Optional. Unique identifier, should be same as the one used in
- *          load_plugin_textdomain().
- *     Domain Path: Optional. Only useful if the translations are located in a
- *          folder above the plugin's base path. For example, if .mo files are
- *          located in the locale folder then Domain Path will be "/locale/" and
- *          must have the first slash. Defaults to the base folder the plugin is
- *          located in.
- *     Network: Optional. Specify "Network: true" to require that a plugin is activated
- *          across all sites in an installation. This will prevent a plugin from being
- *          activated on a single site when Multisite is enabled.
- *     Requires at least: Optional. Specify the minimum required WordPress version.
- *     Requires PHP: Optional. Specify the minimum required PHP version.
- *     * / # Remove the space to close comment.
- *
- * The first 8 KB of the file will be pulled in and if the plugin data is not
- * within that first 8 KB, then the plugin author should correct their plugin
- * and move the plugin data headers to the top.
- *
- * The plugin file is assumed to have permissions to allow for scripts to read
- * the file. This is not checked however and the file is only opened for
- * reading.
- *
- * @since 1.5.0
- * @since 5.3.0 Added support for `Requires at least` and `Requires PHP` headers.
- * @since 5.8.0 Added support for `Update URI` header.
- * @since 6.5.0 Added support for `Requires Plugins` header.
- *
- * @param string $plugin_file Absolute path to the main plugin file.
- * @param bool   $markup      Optional. If the returned data should have HTML markup applied.
- *                            Default true.
- * @param bool   $translate   Optional. If the returned data should be translated. Default true.
- * @return array {
- *     Plugin data. Values will be empty if not supplied by the plugin.
- *
- *     @type string $Name            Name of the plugin. Should be unique.
- *     @type string $PluginURI       Plugin URI.
- *     @type string $Version         Plugin version.
- *     @type string $Description     Plugin description.
- *     @type string $Author          Plugin author's name.
- *     @type string $AuthorURI       Plugin author's website address (if set).
- *     @type string $TextDomain      Plugin textdomain.
- *     @type string $DomainPath      Plugin's relative directory path to .mo files.
- *     @type bool   $Network         Whether the plugin can only be activated network-wide.
- *     @type string $RequiresWP      Minimum required version of WordPress.
- *     @type string $RequiresPHP     Minimum required version of PHP.
- *     @type string $UpdateURI       ID of the plugin for update purposes, should be a URI.
- *     @type string $RequiresPlugins Comma separated list of dot org plugin slugs.
- *     @type string $Title           Title of the plugin and link to the plugin's site (if set).
- *     @type string $AuthorName      Plugin author's name.
- * }
- */
-function get_plugin_data( $plugin_file, $markup = true, $translate = true ) {
-
-	$default_headers = array(
-		'Name'            => 'Plugin Name',
-		'PluginURI'       => 'Plugin URI',
-		'Version'         => 'Version',
-		'Description'     => 'Description',
-		'Author'          => 'Author',
-		'AuthorURI'       => 'Author URI',
-		'TextDomain'      => 'Text Domain',
-		'DomainPath'      => 'Domain Path',
-		'Network'         => 'Network',
-		'RequiresWP'      => 'Requires at least',
-		'RequiresPHP'     => 'Requires PHP',
-		'UpdateURI'       => 'Update URI',
-		'RequiresPlugins' => 'Requires Plugins',
-		// Site Wide Only is deprecated in favor of Network.
-		'_sitewide'       => 'Site Wide Only',
-	);
-
-	$plugin_data = get_file_data( $plugin_file, $default_headers, 'plugin' );
-
-	// Site Wide Only is the old header for Network.
-	if ( ! $plugin_data['Network'] && $plugin_data['_sitewide'] ) {
-		/* translators: 1: Site Wide Only: true, 2: Network: true */
-		_deprecated_argument( __FUNCTION__, '3.0.0', sprintf( __( 'The %1$s plugin header is deprecated. Use %2$s instead.' ), '<code>Site Wide Only: true</code>', '<code>Network: true</code>' ) );
-		$plugin_data['Network'] = $plugin_data['_sitewide'];
-	}
-	$plugin_data['Network'] = ( 'true' === strtolower( $plugin_data['Network'] ) );
-	unset( $plugin_data['_sitewide'] );
-
-	// If no text domain is defined fall back to the plugin slug.
-	if ( ! $plugin_data['TextDomain'] ) {
-		$plugin_slug = dirname( plugin_basename( $plugin_file ) );
-		if ( '.' !== $plugin_slug && ! str_contains( $plugin_slug, '/' ) ) {
-			$plugin_data['TextDomain'] = $plugin_slug;
-		}
-	}
-
-	if ( $markup || $translate ) {
-		$plugin_data = _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup, $translate );
-	} else {
-		$plugin_data['Title']      = $plugin_data['Name'];
-		$plugin_data['AuthorName'] = $plugin_data['Author'];
-	}
-
-	return $plugin_data;
-}
-
-/**
- * Sanitizes plugin data, optionally adds markup, optionally translates.
- *
- * @since 2.7.0
- *
- * @see get_plugin_data()
- *
- * @access private
- *
- * @param string $plugin_file Path to the main plugin file.
- * @param array  $plugin_data An array of plugin data. See get_plugin_data().
- * @param bool   $markup      Optional. If the returned data should have HTML markup applied.
- *                            Default true.
- * @param bool   $translate   Optional. If the returned data should be translated. Default true.
- * @return array Plugin data. Values will be empty if not supplied by the plugin.
- *               See get_plugin_data() for the list of possible values.
- */
-function _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup = true, $translate = true ) {
-
-	// Sanitize the plugin filename to a WP_PLUGIN_DIR relative path.
-	$plugin_file = plugin_basename( $plugin_file );
-
-	// Translate fields.
-	if ( $translate ) {
-		$textdomain = $plugin_data['TextDomain'];
-		if ( $textdomain ) {
-			if ( ! is_textdomain_loaded( $textdomain ) ) {
-				if ( $plugin_data['DomainPath'] ) {
-					load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) . $plugin_data['DomainPath'] );
-				} else {
-					load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) );
-				}
-			}
-		} elseif ( 'hello.php' === basename( $plugin_file ) ) {
-			$textdomain = 'default';
-		}
-		if ( $textdomain ) {
-			foreach ( array( 'Name', 'PluginURI', 'Description', 'Author', 'AuthorURI', 'Version' ) as $field ) {
-				if ( ! empty( $plugin_data[ $field ] ) ) {
-					// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain
-					$plugin_data[ $field ] = translate( $plugin_data[ $field ], $textdomain );
-				}
-			}
-		}
-	}
-
-	// Sanitize fields.
-	$allowed_tags_in_links = array(
-		'abbr'    => array( 'title' => true ),
-		'acronym' => array( 'title' => true ),
-		'code'    => true,
-		'em'      => true,
-		'strong'  => true,
-	);
-
-	$allowed_tags      = $allowed_tags_in_links;
-	$allowed_tags['a'] = array(
-		'href'  => true,
-		'title' => true,
-	);
-
-	/*
-	 * Name is marked up inside <a> tags. Don't allow these.
-	 * Author is too, but some plugins have used <a> here (omitting Author URI).
-	 */
-	$plugin_data['Name']   = wp_kses( $plugin_data['Name'], $allowed_tags_in_links );
-	$plugin_data['Author'] = wp_kses( $plugin_data['Author'], $allowed_tags );
-
-	$plugin_data['Description'] = wp_kses( $plugin_data['Description'], $allowed_tags );
-	$plugin_data['Version']     = wp_kses( $plugin_data['Version'], $allowed_tags );
-
-	$plugin_data['PluginURI'] = esc_url( $plugin_data['PluginURI'] );
-	$plugin_data['AuthorURI'] = esc_url( $plugin_data['AuthorURI'] );
-
-	$plugin_data['Title']      = $plugin_data['Name'];
-	$plugin_data['AuthorName'] = $plugin_data['Author'];
-
-	// Apply markup.
-	if ( $markup ) {
-		if ( $plugin_data['PluginURI'] && $plugin_data['Name'] ) {
-			$plugin_data['Title'] = '<a href="' . $plugin_data['PluginURI'] . '">' . $plugin_data['Name'] . '</a>';
-		}
-
-		if ( $plugin_data['AuthorURI'] && $plugin_data['Author'] ) {
-			$plugin_data['Author'] = '<a href="' . $plugin_data['AuthorURI'] . '">' . $plugin_data['Author'] . '</a>';
-		}
-
-		$plugin_data['Description'] = wptexturize( $plugin_data['Description'] );
-
-		if ( $plugin_data['Author'] ) {
-			$plugin_data['Description'] .= sprintf(
-			/* translators: %s: Plugin author. */
-				' <cite>' . __( 'By %s.' ) . '</cite>',
-				$plugin_data['Author']
-			);
-		}
-	}
-
-	return $plugin_data;
-}
-
-/**
- * Determines whether a plugin is active.
- *
- * Only plugins installed in the plugins/ folder can be active.
- *
- * Plugins in the mu-plugins/ folder can't be "activated," so this function will
- * return false for those plugins.
- *
- * For more information on this and similar theme functions, check out
- * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
- * Conditional Tags} article in the Theme Developer Handbook.
- *
- * @since 2.5.0
- *
- * @param string $plugin Path to the plugin file relative to the plugins directory.
- * @return bool True, if in the active plugins list. False, not in the list.
- */
-function is_plugin_active( $plugin ) {
-	return in_array( $plugin, (array) get_option( 'active_plugins', array() ), true ) || is_plugin_active_for_network( $plugin );
-}
-
-/**
- * Determines whether the plugin is inactive.
- *
- * Reverse of is_plugin_active(). Used as a callback.
- *
- * For more information on this and similar theme functions, check out
- * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
- * Conditional Tags} article in the Theme Developer Handbook.
- *
- * @since 3.1.0
- *
- * @see is_plugin_active()
- *
- * @param string $plugin Path to the plugin file relative to the plugins directory.
- * @return bool True if inactive. False if active.
- */
-function is_plugin_inactive( $plugin ) {
-	return ! is_plugin_active( $plugin );
-}
-
-/**
- * Determines whether the plugin is active for the entire network.
- *
- * Only plugins installed in the plugins/ folder can be active.
- *
- * Plugins in the mu-plugins/ folder can't be "activated," so this function will
- * return false for those plugins.
- *
- * For more information on this and similar theme functions, check out
- * the {@link https://developer.wordpress.org/themes/basics/conditional-tags/
- * Conditional Tags} article in the Theme Developer Handbook.
- *
- * @since 3.0.0
- *
- * @param string $plugin Path to the plugin file relative to the plugins directory.
- * @return bool True if active for the network, otherwise false.
- */
-function is_plugin_active_for_network( $plugin ) {
-	if ( ! is_multisite() ) {
-		return false;
-	}
-
-	$plugins = get_site_option( 'active_sitewide_plugins' );
-	if ( isset( $plugins[ $plugin ] ) ) {
-		return true;
-	}
-
-	return false;
-}
-
-/**
- * Checks for "Network: true" in the plugin header to see if this should
- * be activated only as a network wide plugin. The plugin would also work
- * when Multisite is not enabled.
- *
- * Checks for "Site Wide Only: true" for backward compatibility.
- *
- * @since 3.0.0
- *
- * @param string $plugin Path to the plugin file relative to the plugins directory.
- * @return bool True if plugin is network only, false otherwise.
- */
-function is_network_only_plugin( $plugin ) {
-	$plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/' . $plugin );
-	if ( $plugin_data ) {
-		return $plugin_data['Network'];
-	}
-	return false;
-}
-
 /**
  * Returns true.
  *
diff --git a/wp-includes/version.php b/wp-includes/version.php
index 3cf57610f9..2ba321ec58 100644
--- a/wp-includes/version.php
+++ b/wp-includes/version.php
@@ -16,7 +16,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '6.8-alpha-59486';
+$wp_version = '6.8-alpha-59488';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.
diff --git a/wp-settings.php b/wp-settings.php
index 44c04a3a7b..635f6de248 100644
--- a/wp-settings.php
+++ b/wp-settings.php
@@ -518,6 +518,9 @@ if ( ! is_multisite() && wp_is_fatal_error_handler_enabled() ) {
 	wp_recovery_mode()->initialize();
 }
 
+// To make get_plugin_data() available in a way that's compatible with plugins also loading this file, see #62244.
+require_once ABSPATH . 'wp-admin/includes/plugin.php';
+
 // Load active plugins.
 foreach ( wp_get_active_and_valid_plugins() as $plugin ) {
 	wp_register_plugin_realpath( $plugin );