<?php

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/**

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* WordPress Plugin Administration API

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*

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* @package WordPress

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* @subpackage Administration

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*/

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/**

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* Parses the plugin contents to retrieve plugin's metadata.

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*

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* All plugin headers must be on their own line. Plugin description must not have

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* any newlines, otherwise only parts of the description will be displayed.

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* The below is formatted for printing.

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*

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* /*

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* Plugin Name: Name of the plugin.

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* Plugin URI: The home page of the plugin.

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* Description: Plugin description.

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* Author: Plugin author's name.

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* Author URI: Link to the author's website.

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* Version: Plugin version.

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* Text Domain: Optional. Unique identifier, should be same as the one used in

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* load_plugin_textdomain().

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* Domain Path: Optional. Only useful if the translations are located in a

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* folder above the plugin's base path. For example, if .mo files are

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* located in the locale folder then Domain Path will be "/locale/" and

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* must have the first slash. Defaults to the base folder the plugin is

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* located in.

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* Network: Optional. Specify "Network: true" to require that a plugin is activated

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* across all sites in an installation. This will prevent a plugin from being

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* activated on a single site when Multisite is enabled.

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* Requires at least: Optional. Specify the minimum required WordPress version.

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* Requires PHP: Optional. Specify the minimum required PHP version.

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* * / # Remove the space to close comment.

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*

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* The first 8 KB of the file will be pulled in and if the plugin data is not

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* within that first 8 KB, then the plugin author should correct their plugin

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* and move the plugin data headers to the top.

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*

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* The plugin file is assumed to have permissions to allow for scripts to read

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* the file. This is not checked however and the file is only opened for

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* reading.

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*

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* @since 1.5.0

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* @since 5.3.0 Added support for `Requires at least` and `Requires PHP` headers.

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* @since 5.8.0 Added support for `Update URI` header.

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* @since 6.5.0 Added support for `Requires Plugins` header.

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*

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* @param string $plugin_file Absolute path to the main plugin file.

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* @param bool $markup Optional. If the returned data should have HTML markup applied.

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* Default true.

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* @param bool $translate Optional. If the returned data should be translated. Default true.

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* @return array {

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* Plugin data. Values will be empty if not supplied by the plugin.

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*

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* @type string $Name Name of the plugin. Should be unique.

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* @type string $PluginURI Plugin URI.

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* @type string $Version Plugin version.

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* @type string $Description Plugin description.

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* @type string $Author Plugin author's name.

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* @type string $AuthorURI Plugin author's website address (if set).

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* @type string $TextDomain Plugin textdomain.

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* @type string $DomainPath Plugin's relative directory path to .mo files.

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* @type bool $Network Whether the plugin can only be activated network-wide.

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* @type string $RequiresWP Minimum required version of WordPress.

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* @type string $RequiresPHP Minimum required version of PHP.

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* @type string $UpdateURI ID of the plugin for update purposes, should be a URI.

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* @type string $RequiresPlugins Comma separated list of dot org plugin slugs.

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* @type string $Title Title of the plugin and link to the plugin's site (if set).

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* @type string $AuthorName Plugin author's name.

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* }

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*/

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function get_plugin_data( $plugin_file, $markup = true, $translate = true ) {

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$default_headers = array(

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'Name' => 'Plugin Name',

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'PluginURI' => 'Plugin URI',

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'Version' => 'Version',

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'Description' => 'Description',

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'Author' => 'Author',

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'AuthorURI' => 'Author URI',

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'TextDomain' => 'Text Domain',

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'DomainPath' => 'Domain Path',

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'Network' => 'Network',

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'RequiresWP' => 'Requires at least',

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'RequiresPHP' => 'Requires PHP',

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'UpdateURI' => 'Update URI',

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'RequiresPlugins' => 'Requires Plugins',

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// Site Wide Only is deprecated in favor of Network.

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'_sitewide' => 'Site Wide Only',

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);

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$plugin_data = get_file_data( $plugin_file, $default_headers, 'plugin' );

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// Site Wide Only is the old header for Network.

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if ( ! $plugin_data['Network'] && $plugin_data['_sitewide'] ) {

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/* translators: 1: Site Wide Only: true, 2: Network: true */

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_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>' ) );

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$plugin_data['Network'] = $plugin_data['_sitewide'];

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}

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$plugin_data['Network'] = ( 'true' === strtolower( $plugin_data['Network'] ) );

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unset( $plugin_data['_sitewide'] );

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// If no text domain is defined fall back to the plugin slug.

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if ( ! $plugin_data['TextDomain'] ) {

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$plugin_slug = dirname( plugin_basename( $plugin_file ) );

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if ( '.' !== $plugin_slug && ! str_contains( $plugin_slug, '/' ) ) {

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$plugin_data['TextDomain'] = $plugin_slug;

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}

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}

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if ( $markup || $translate ) {

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$plugin_data = _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup, $translate );

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} else {

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$plugin_data['Title'] = $plugin_data['Name'];

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$plugin_data['AuthorName'] = $plugin_data['Author'];

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}

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return $plugin_data;

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}

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/**

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* Sanitizes plugin data, optionally adds markup, optionally translates.

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*

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* @since 2.7.0

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*

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* @see get_plugin_data()

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*

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* @access private

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*

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* @param string $plugin_file Path to the main plugin file.

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* @param array $plugin_data An array of plugin data. See get_plugin_data().

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* @param bool $markup Optional. If the returned data should have HTML markup applied.

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* Default true.

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* @param bool $translate Optional. If the returned data should be translated. Default true.

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* @return array Plugin data. Values will be empty if not supplied by the plugin.

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* See get_plugin_data() for the list of possible values.

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*/

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function _get_plugin_data_markup_translate( $plugin_file, $plugin_data, $markup = true, $translate = true ) {

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// Sanitize the plugin filename to a WP_PLUGIN_DIR relative path.

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$plugin_file = plugin_basename( $plugin_file );

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// Translate fields.

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if ( $translate ) {

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$textdomain = $plugin_data['TextDomain'];

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if ( $textdomain ) {

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if ( ! is_textdomain_loaded( $textdomain ) ) {

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if ( $plugin_data['DomainPath'] ) {

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load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) . $plugin_data['DomainPath'] );

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} else {

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load_plugin_textdomain( $textdomain, false, dirname( $plugin_file ) );

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}

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}

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} elseif ( 'hello.php' === basename( $plugin_file ) ) {

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$textdomain = 'default';

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}

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if ( $textdomain ) {

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foreach ( array( 'Name', 'PluginURI', 'Description', 'Author', 'AuthorURI', 'Version' ) as $field ) {

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if ( ! empty( $plugin_data[ $field ] ) ) {

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// phpcs:ignore WordPress.WP.I18n.LowLevelTranslationFunction,WordPress.WP.I18n.NonSingularStringLiteralText,WordPress.WP.I18n.NonSingularStringLiteralDomain

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$plugin_data[ $field ] = translate( $plugin_data[ $field ], $textdomain );

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}

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}

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}

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}

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// Sanitize fields.

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$allowed_tags_in_links = array(

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'abbr' => array( 'title' => true ),

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'acronym' => array( 'title' => true ),

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'code' => true,

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'em' => true,

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'strong' => true,

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);

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$allowed_tags = $allowed_tags_in_links;

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$allowed_tags['a'] = array(

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'href' => true,

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'title' => true,

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);

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/*

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* Name is marked up inside <a> tags. Don't allow these.

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* Author is too, but some plugins have used <a> here (omitting Author URI).

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*/

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$plugin_data['Name'] = wp_kses( $plugin_data['Name'], $allowed_tags_in_links );

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$plugin_data['Author'] = wp_kses( $plugin_data['Author'], $allowed_tags );

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$plugin_data['Description'] = wp_kses( $plugin_data['Description'], $allowed_tags );

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$plugin_data['Version'] = wp_kses( $plugin_data['Version'], $allowed_tags );

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$plugin_data['PluginURI'] = esc_url( $plugin_data['PluginURI'] );

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$plugin_data['AuthorURI'] = esc_url( $plugin_data['AuthorURI'] );

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$plugin_data['Title'] = $plugin_data['Name'];

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$plugin_data['AuthorName'] = $plugin_data['Author'];

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// Apply markup.

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if ( $markup ) {

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if ( $plugin_data['PluginURI'] && $plugin_data['Name'] ) {

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$plugin_data['Title'] = '<a href="' . $plugin_data['PluginURI'] . '">' . $plugin_data['Name'] . '</a>';

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}

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if ( $plugin_data['AuthorURI'] && $plugin_data['Author'] ) {

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$plugin_data['Author'] = '<a href="' . $plugin_data['AuthorURI'] . '">' . $plugin_data['Author'] . '</a>';

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}

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$plugin_data['Description'] = wptexturize( $plugin_data['Description'] );

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if ( $plugin_data['Author'] ) {

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$plugin_data['Description'] .= sprintf(

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/* translators: %s: Plugin author. */

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' <cite>' . __( 'By %s.' ) . '</cite>',

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$plugin_data['Author']

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);

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}

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}

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return $plugin_data;

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}

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/**

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* Gets a list of a plugin's files.

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*

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* @since 2.8.0

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*

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* @param string $plugin Path to the plugin file relative to the plugins directory.

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* @return string[] Array of file names relative to the plugin root.

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*/

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function get_plugin_files( $plugin ) {

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$plugin_file = WP_PLUGIN_DIR . '/' . $plugin;

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$dir = dirname( $plugin_file );

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$plugin_files = array( plugin_basename( $plugin_file ) );

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if ( is_dir( $dir ) && WP_PLUGIN_DIR !== $dir ) {

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/**

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* Filters the array of excluded directories and files while scanning the folder.

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*

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* @since 4.9.0

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*

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* @param string[] $exclusions Array of excluded directories and files.

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*/

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$exclusions = (array) apply_filters( 'plugin_files_exclusions', array( 'CVS', 'node_modules', 'vendor', 'bower_components' ) );

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$list_files = list_files( $dir, 100, $exclusions );

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$list_files = array_map( 'plugin_basename', $list_files );

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$plugin_files = array_merge( $plugin_files, $list_files );

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$plugin_files = array_values( array_unique( $plugin_files ) );

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}

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return $plugin_files;

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}

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/**

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* Checks the plugins directory and retrieve all plugin files with plugin data.

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*

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* WordPress only supports plugin files in the base plugins directory

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* (wp-content/plugins) and in one directory above the plugins directory

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* (wp-content/plugins/my-plugin). The file it looks for has the plugin data

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* and must be found in those two locations. It is recommended to keep your

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* plugin files in their own directories.

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*

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* The file with the plugin data is the file that will be included and therefore

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* needs to have the main execution for the plugin. This does not mean

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* everything must be contained in the file and it is recommended that the file

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* be split for maintainability. Keep everything in one file for extreme

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* optimization purposes.

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*

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* @since 1.5.0

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*

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* @param string $plugin_folder Optional. Relative path to single plugin folder.

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* @return array[] Array of arrays of plugin data, keyed by plugin file name. See get_plugin_data().

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*/

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function get_plugins( $plugin_folder = '' ) {

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$cache_plugins = wp_cache_get( 'plugins', 'plugins' );

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if ( ! $cache_plugins ) {

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$cache_plugins = array();

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}

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if ( isset( $cache_plugins[ $plugin_folder ] ) ) {

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return $cache_plugins[ $plugin_folder ];

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}

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$wp_plugins = array();

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$plugin_root = WP_PLUGIN_DIR;

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if ( ! empty( $plugin_folder ) ) {

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$plugin_root .= $plugin_folder;

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}

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// Files in wp-content/plugins directory.

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$plugins_dir = @opendir( $plugin_root );

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$plugin_files = array();

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if ( $plugins_dir ) {

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while ( ( $file = readdir( $plugins_dir ) ) !== false ) {

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if ( str_starts_with( $file, '.' ) ) {

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continue;

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}

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if ( is_dir( $plugin_root . '/' . $file ) ) {

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$plugins_subdir = @opendir( $plugin_root . '/' . $file );

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if ( $plugins_subdir ) {

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while ( ( $subfile = readdir( $plugins_subdir ) ) !== false ) {

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if ( str_starts_with( $subfile, '.' ) ) {

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continue;

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}

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if ( str_ends_with( $subfile, '.php' ) ) {

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$plugin_files[] = "$file/$subfile";

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}

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}

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closedir( $plugins_subdir );

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}

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} elseif ( str_ends_with( $file, '.php' ) ) {

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$plugin_files[] = $file;

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}

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}

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closedir( $plugins_dir );

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}

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if ( empty( $plugin_files ) ) {

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return $wp_plugins;

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}

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foreach ( $plugin_files as $plugin_file ) {

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if ( ! is_readable( "$plugin_root/$plugin_file" ) ) {

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continue;

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}

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// Do not apply markup/translate as it will be cached.

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$plugin_data = get_plugin_data( "$plugin_root/$plugin_file", false, false );

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if ( empty( $plugin_data['Name'] ) ) {

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continue;

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}

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$wp_plugins[ plugin_basename( $plugin_file ) ] = $plugin_data;

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}

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uasort( $wp_plugins, '_sort_uname_callback' );

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$cache_plugins[ $plugin_folder ] = $wp_plugins;

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wp_cache_set( 'plugins', $cache_plugins, 'plugins' );

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return $wp_plugins;

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}

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/**

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* Checks the mu-plugins directory and retrieve all mu-plugin files with any plugin data.

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*

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* WordPress only includes mu-plugin files in the base mu-plugins directory (wp-content/mu-plugins).

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*

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* @since 3.0.0

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* @return array[] Array of arrays of mu-plugin data, keyed by plugin file name. See get_plugin_data().

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*/

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function get_mu_plugins() {

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$wp_plugins = array();

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$plugin_files = array();

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if ( ! is_dir( WPMU_PLUGIN_DIR ) ) {

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return $wp_plugins;

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}

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// Files in wp-content/mu-plugins directory.

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$plugins_dir = @opendir( WPMU_PLUGIN_DIR );

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if ( $plugins_dir ) {

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while ( ( $file = readdir( $plugins_dir ) ) !== false ) {

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if ( str_ends_with( $file, '.php' ) ) {

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$plugin_files[] = $file;

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}

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}

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} else {

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return $wp_plugins;

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}

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closedir( $plugins_dir );

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if ( empty( $plugin_files ) ) {

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return $wp_plugins;

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}

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foreach ( $plugin_files as $plugin_file ) {

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if ( ! is_readable( WPMU_PLUGIN_DIR . "/$plugin_file" ) ) {

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continue;

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}

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// Do not apply markup/translate as it will be cached.

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$plugin_data = get_plugin_data( WPMU_PLUGIN_DIR . "/$plugin_file", false, false );

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if ( empty( $plugin_data['Name'] ) ) {

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$plugin_data['Name'] = $plugin_file;

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}

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$wp_plugins[ $plugin_file ] = $plugin_data;

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}

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if ( isset( $wp_plugins['index.php'] ) && filesize( WPMU_PLUGIN_DIR . '/index.php' ) <= 30 ) {

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// Silence is golden.

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unset( $wp_plugins['index.php'] );

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}

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uasort( $wp_plugins, '_sort_uname_callback' );

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return $wp_plugins;

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}

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/**

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* Declares a callback to sort array by a 'Name' key.

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*

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* @since 3.1.0

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*

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* @access private

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*

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* @param array $a array with 'Name' key.

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* @param array $b array with 'Name' key.

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* @return int Return 0 or 1 based on two string comparison.

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*/

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function _sort_uname_callback( $a, $b ) {

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return strnatcasecmp( $a['Name'], $b['Name'] );

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}

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/**

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* Checks the wp-content directory and retrieve all drop-ins with any plugin data.

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*

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* @since 3.0.0

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* @return array[] Array of arrays of dropin plugin data, keyed by plugin file name. See get_plugin_data().

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*/

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function get_dropins() {

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$dropins = array();

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$plugin_files = array();

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$_dropins = _get_dropins();

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// Files in wp-content directory.

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$plugins_dir = @opendir( WP_CONTENT_DIR );

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if ( $plugins_dir ) {

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while ( ( $file = readdir( $plugins_dir ) ) !== false ) {

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if ( isset( $_dropins[ $file ] ) ) {

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$plugin_files[] = $file;

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}

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}

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} else {

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return $dropins;

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}

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closedir( $plugins_dir );

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if ( empty( $plugin_files ) ) {

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return $dropins;

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}

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foreach ( $plugin_files as $plugin_file ) {

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if ( ! is_readable( WP_CONTENT_DIR . "/$plugin_file" ) ) {

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continue;

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}

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// Do not apply markup/translate as it will be cached.

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$plugin_data = get_plugin_data( WP_CONTENT_DIR . "/$plugin_file", false, false );

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if ( empty( $plugin_data['Name'] ) ) {

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$plugin_data['Name'] = $plugin_file;

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}

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$dropins[ $plugin_file ] = $plugin_data;

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}

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uksort( $dropins, 'strnatcasecmp' );

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return $dropins;

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}

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/**

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* Returns drop-in plugins that WordPress uses.

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*

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* Includes Multisite drop-ins only when is_multisite()

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*

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* @since 3.0.0

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*

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* @return array[] {

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* Key is file name. The value is an array of data about the drop-in.

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*

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* @type array ...$0 {

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* Data about the drop-in.

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*

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* @type string $0 The purpose of the drop-in.

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* @type string|true $1 Name of the constant that must be true for the drop-in

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* to be used, or true if no constant is required.

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* }

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* }

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*/

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function _get_dropins() {

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