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PHP Cross Reference of WordPress 3.0.1Provided by Yoast |
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1 <?php 2 /** 3 * WordPress core upgrade functionality. 4 * 5 * @package WordPress 6 * @subpackage Administration 7 * @since 2.7.0 8 */ 9 10 /** 11 * Stores files to be deleted. 12 * 13 * @since 2.7.0 14 * @global array $_old_files 15 * @var array 16 * @name $_old_files 17 */ 18 global $_old_files; 19 20 $_old_files = array( 21 'wp-admin/bookmarklet.php', 22 'wp-admin/css/upload.css', 23 'wp-admin/css/upload-rtl.css', 24 'wp-admin/css/press-this-ie.css', 25 'wp-admin/css/press-this-ie-rtl.css', 26 'wp-admin/edit-form.php', 27 'wp-admin/link-import.php', 28 'wp-admin/images/box-bg-left.gif', 29 'wp-admin/images/box-bg-right.gif', 30 'wp-admin/images/box-bg.gif', 31 'wp-admin/images/box-butt-left.gif', 32 'wp-admin/images/box-butt-right.gif', 33 'wp-admin/images/box-butt.gif', 34 'wp-admin/images/box-head-left.gif', 35 'wp-admin/images/box-head-right.gif', 36 'wp-admin/images/box-head.gif', 37 'wp-admin/images/heading-bg.gif', 38 'wp-admin/images/login-bkg-bottom.gif', 39 'wp-admin/images/login-bkg-tile.gif', 40 'wp-admin/images/notice.gif', 41 'wp-admin/images/toggle.gif', 42 'wp-admin/images/comment-stalk-classic.gif', 43 'wp-admin/images/comment-stalk-fresh.gif', 44 'wp-admin/images/comment-stalk-rtl.gif', 45 'wp-admin/images/comment-pill.gif', 46 'wp-admin/images/del.png', 47 'wp-admin/images/media-button-gallery.gif', 48 'wp-admin/images/media-buttons.gif', 49 'wp-admin/images/tail.gif', 50 'wp-admin/images/gear.png', 51 'wp-admin/images/tab.png', 52 'wp-admin/images/postbox-bg.gif', 53 'wp-admin/includes/upload.php', 54 'wp-admin/js/dbx-admin-key.js', 55 'wp-admin/js/link-cat.js', 56 'wp-admin/js/forms.js', 57 'wp-admin/js/upload.js', 58 'wp-admin/js/set-post-thumbnail-handler.js', 59 'wp-admin/js/set-post-thumbnail-handler.dev.js', 60 'wp-admin/js/page.js', 61 'wp-admin/js/page.dev.js', 62 'wp-admin/js/slug.js', 63 'wp-admin/js/slug.dev.js', 64 'wp-admin/profile-update.php', 65 'wp-admin/templates.php', 66 'wp-includes/images/audio.png', 67 'wp-includes/images/css.png', 68 'wp-includes/images/default.png', 69 'wp-includes/images/doc.png', 70 'wp-includes/images/exe.png', 71 'wp-includes/images/html.png', 72 'wp-includes/images/js.png', 73 'wp-includes/images/pdf.png', 74 'wp-includes/images/swf.png', 75 'wp-includes/images/tar.png', 76 'wp-includes/images/text.png', 77 'wp-includes/images/video.png', 78 'wp-includes/images/zip.png', 79 'wp-includes/js/dbx.js', 80 'wp-includes/js/fat.js', 81 'wp-includes/js/list-manipulation.js', 82 'wp-includes/js/jquery/jquery.dimensions.min.js', 83 'wp-includes/js/tinymce/langs/en.js', 84 'wp-includes/js/tinymce/plugins/autosave/editor_plugin_src.js', 85 'wp-includes/js/tinymce/plugins/autosave/langs', 86 'wp-includes/js/tinymce/plugins/directionality/images', 87 'wp-includes/js/tinymce/plugins/directionality/langs', 88 'wp-includes/js/tinymce/plugins/inlinepopups/css', 89 'wp-includes/js/tinymce/plugins/inlinepopups/images', 90 'wp-includes/js/tinymce/plugins/inlinepopups/jscripts', 91 'wp-includes/js/tinymce/plugins/paste/images', 92 'wp-includes/js/tinymce/plugins/paste/jscripts', 93 'wp-includes/js/tinymce/plugins/paste/langs', 94 'wp-includes/js/tinymce/plugins/spellchecker/classes/HttpClient.class.php', 95 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyGoogleSpell.class.php', 96 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspell.class.php', 97 'wp-includes/js/tinymce/plugins/spellchecker/classes/TinyPspellShell.class.php', 98 'wp-includes/js/tinymce/plugins/spellchecker/css/spellchecker.css', 99 'wp-includes/js/tinymce/plugins/spellchecker/images', 100 'wp-includes/js/tinymce/plugins/spellchecker/langs', 101 'wp-includes/js/tinymce/plugins/spellchecker/tinyspell.php', 102 'wp-includes/js/tinymce/plugins/wordpress/images', 103 'wp-includes/js/tinymce/plugins/wordpress/langs', 104 'wp-includes/js/tinymce/plugins/wordpress/popups.css', 105 'wp-includes/js/tinymce/plugins/wordpress/wordpress.css', 106 'wp-includes/js/tinymce/plugins/wphelp', 107 'wp-includes/js/tinymce/themes/advanced/css', 108 'wp-includes/js/tinymce/themes/advanced/images', 109 'wp-includes/js/tinymce/themes/advanced/jscripts', 110 'wp-includes/js/tinymce/themes/advanced/langs', 111 'wp-includes/js/tinymce/tiny_mce_gzip.php', 112 'wp-includes/js/wp-ajax.js', 113 'wp-admin/admin-db.php', 114 'wp-admin/cat.js', 115 'wp-admin/categories.js', 116 'wp-admin/custom-fields.js', 117 'wp-admin/dbx-admin-key.js', 118 'wp-admin/edit-comments.js', 119 'wp-admin/install-rtl.css', 120 'wp-admin/install.css', 121 'wp-admin/upgrade-schema.php', 122 'wp-admin/upload-functions.php', 123 'wp-admin/upload-rtl.css', 124 'wp-admin/upload.css', 125 'wp-admin/upload.js', 126 'wp-admin/users.js', 127 'wp-admin/widgets-rtl.css', 128 'wp-admin/widgets.css', 129 'wp-admin/xfn.js', 130 'wp-includes/js/tinymce/license.html', 131 'wp-admin/cat-js.php', 132 'wp-admin/edit-form-ajax-cat.php', 133 'wp-admin/execute-pings.php', 134 'wp-admin/import/b2.php', 135 'wp-admin/import/btt.php', 136 'wp-admin/import/jkw.php', 137 'wp-admin/inline-uploading.php', 138 'wp-admin/link-categories.php', 139 'wp-admin/list-manipulation.js', 140 'wp-admin/list-manipulation.php', 141 'wp-includes/comment-functions.php', 142 'wp-includes/feed-functions.php', 143 'wp-includes/functions-compat.php', 144 'wp-includes/functions-formatting.php', 145 'wp-includes/functions-post.php', 146 'wp-includes/js/dbx-key.js', 147 'wp-includes/js/tinymce/plugins/autosave/langs/cs.js', 148 'wp-includes/js/tinymce/plugins/autosave/langs/sv.js', 149 'wp-includes/js/tinymce/themes/advanced/editor_template_src.js', 150 'wp-includes/links.php', 151 'wp-includes/pluggable-functions.php', 152 'wp-includes/template-functions-author.php', 153 'wp-includes/template-functions-category.php', 154 'wp-includes/template-functions-general.php', 155 'wp-includes/template-functions-links.php', 156 'wp-includes/template-functions-post.php', 157 'wp-includes/wp-l10n.php', 158 'wp-admin/import-b2.php', 159 'wp-admin/import-blogger.php', 160 'wp-admin/import-greymatter.php', 161 'wp-admin/import-livejournal.php', 162 'wp-admin/import-mt.php', 163 'wp-admin/import-rss.php', 164 'wp-admin/import-textpattern.php', 165 'wp-admin/quicktags.js', 166 'wp-images/fade-butt.png', 167 'wp-images/get-firefox.png', 168 'wp-images/header-shadow.png', 169 'wp-images/smilies', 170 'wp-images/wp-small.png', 171 'wp-images/wpminilogo.png', 172 'wp.php', 173 'wp-includes/gettext.php', 174 'wp-includes/streams.php', 175 // MU 176 'wp-admin/wpmu-admin.php', 177 'wp-admin/wpmu-blogs.php', 178 'wp-admin/wpmu-edit.php', 179 'wp-admin/wpmu-options.php', 180 'wp-admin/wpmu-themes.php', 181 'wp-admin/wpmu-upgrade-site.php', 182 'wp-admin/wpmu-users.php', 183 'wp-includes/wpmu-default-filters.php', 184 'wp-includes/wpmu-functions.php', 185 'wpmu-settings.php', 186 'index-install.php', 187 'README.txt', 188 'htaccess.dist', 189 'wp-admin/css/mu-rtl.css', 190 'wp-admin/css/mu.css', 191 'wp-admin/images/site-admin.png', 192 'wp-admin/includes/mu.php', 193 'wp-includes/images/wordpress-mu.png', 194 // 3.0 195 'wp-admin/categories.php', 196 'wp-admin/edit-category-form.php', 197 'wp-admin/edit-page-form.php', 198 'wp-admin/edit-pages.php', 199 'wp-admin/images/wp-logo.gif', 200 'wp-admin/js/wp-gears.dev.js', 201 'wp-admin/js/wp-gears.js', 202 'wp-admin/options-misc.php', 203 'wp-admin/page-new.php', 204 'wp-admin/page.php', 205 'wp-admin/rtl.css', 206 'wp-admin/rtl.dev.css', 207 'wp-admin/update-links.php', 208 'wp-admin/wp-admin.css', 209 'wp-admin/wp-admin.dev.css', 210 'wp-includes/js/codepress', 211 'wp-includes/js/jquery/autocomplete.dev.js', 212 'wp-includes/js/jquery/interface.js', 213 'wp-includes/js/jquery/autocomplete.js', 214 'wp-includes/js/scriptaculous/prototype.js', 215 'wp-includes/js/tinymce/wp-tinymce.js', 216 'wp-content/themes/twentyten/searchform.php', 217 'wp-admin/import', 218 'wp-admin/images/ico-edit.png', 219 'wp-admin/images/fav-top.png', 220 'wp-admin/images/ico-close.png', 221 'wp-admin/images/admin-header-footer.png', 222 'wp-admin/images/screen-options-left.gif', 223 'wp-admin/images/ico-add.png', 224 'wp-admin/images/browse-happy.gif', 225 'wp-admin/images/ico-viewpage.png', 226 ); 227 228 /** 229 * Upgrade the core of WordPress. 230 * 231 * This will create a .maintenance file at the base of the WordPress directory 232 * to ensure that people can not access the web site, when the files are being 233 * copied to their locations. 234 * 235 * The files in the {@link $_old_files} list will be removed and the new files 236 * copied from the zip file after the database is upgraded. 237 * 238 * The steps for the upgrader for after the new release is downloaded and 239 * unzipped is: 240 * 1. Test unzipped location for select files to ensure that unzipped worked. 241 * 2. Create the .maintenance file in current WordPress base. 242 * 3. Copy new WordPress directory over old WordPress files. 243 * 4. Upgrade WordPress to new version. 244 * 5. Delete new WordPress directory path. 245 * 6. Delete .maintenance file. 246 * 7. Remove old files. 247 * 8. Delete 'update_core' option. 248 * 249 * There are several areas of failure. For instance if PHP times out before step 250 * 6, then you will not be able to access any portion of your site. Also, since 251 * the upgrade will not continue where it left off, you will not be able to 252 * automatically remove old files and remove the 'update_core' option. This 253 * isn't that bad. 254 * 255 * If the copy of the new WordPress over the old fails, then the worse is that 256 * the new WordPress directory will remain. 257 * 258 * If it is assumed that every file will be copied over, including plugins and 259 * themes, then if you edit the default theme, you should rename it, so that 260 * your changes remain. 261 * 262 * @since 2.7.0 263 * 264 * @param string $from New release unzipped path. 265 * @param string $to Path to old WordPress installation. 266 * @return WP_Error|null WP_Error on failure, null on success. 267 */ 268 function update_core($from, $to) { 269 global $wp_filesystem, $_old_files, $wpdb; 270 271 @set_time_limit( 300 ); 272 273 $php_version = phpversion(); 274 $mysql_version = $wpdb->db_version(); 275 $required_php_version = '4.3'; 276 $required_mysql_version = '4.1.2'; 277 $wp_version = '3.0.1'; 278 $php_compat = version_compare( $php_version, $required_php_version, '>=' ); 279 $mysql_compat = version_compare( $mysql_version, $required_mysql_version, '>=' ) || file_exists( WP_CONTENT_DIR . '/db.php' ); 280 281 if ( !$mysql_compat || !$php_compat ) 282 $wp_filesystem->delete($from, true); 283 284 if ( !$mysql_compat && !$php_compat ) 285 return new WP_Error( 'php_mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher and MySQL version %3$s or higher. You are running PHP version %4$s and MySQL version %5$s.'), $wp_version, $required_php_version, $required_mysql_version, $php_version, $mysql_version ) ); 286 elseif ( !$php_compat ) 287 return new WP_Error( 'php_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires PHP version %2$s or higher. You are running version %3$s.'), $wp_version, $required_php_version, $php_version ) ); 288 elseif ( !$mysql_compat ) 289 return new WP_Error( 'mysql_not_compatible', sprintf( __('The update cannot be installed because WordPress %1$s requires MySQL version %2$s or higher. You are running version %3$s.'), $wp_version, $required_mysql_version, $mysql_version ) ); 290 291 // Sanity check the unzipped distribution 292 apply_filters('update_feedback', __('Verifying the unpacked files…')); 293 $distro = ''; 294 $roots = array( '/wordpress', '/wordpress-mu' ); 295 foreach( $roots as $root ) { 296 if ( $wp_filesystem->exists($from . $root . '/wp-settings.php') && $wp_filesystem->exists($from . $root . '/wp-admin/admin.php') && 297 $wp_filesystem->exists($from . $root . '/wp-includes/functions.php') ) { 298 $distro = $root; 299 break; 300 } 301 } 302 if ( !$distro ) { 303 $wp_filesystem->delete($from, true); 304 return new WP_Error('insane_distro', __('The update could not be unpacked') ); 305 } 306 307 apply_filters('update_feedback', __('Installing the latest version…')); 308 309 // Create maintenance file to signal that we are upgrading 310 $maintenance_string = '<?php $upgrading = ' . time() . '; ?>'; 311 $maintenance_file = $to . '.maintenance'; 312 $wp_filesystem->delete($maintenance_file); 313 $wp_filesystem->put_contents($maintenance_file, $maintenance_string, FS_CHMOD_FILE); 314 315 // Copy new versions of WP files into place. 316 $result = copy_dir($from . $distro, $to); 317 if ( is_wp_error($result) ) { 318 $wp_filesystem->delete($maintenance_file); 319 $wp_filesystem->delete($from, true); 320 return $result; 321 } 322 323 // Remove old files 324 foreach ( $_old_files as $old_file ) { 325 $old_file = $to . $old_file; 326 if ( !$wp_filesystem->exists($old_file) ) 327 continue; 328 $wp_filesystem->delete($old_file, true); 329 } 330 331 // Upgrade DB with separate request 332 apply_filters('update_feedback', __('Upgrading database…')); 333 $db_upgrade_url = admin_url('upgrade.php?step=upgrade_db'); 334 wp_remote_post($db_upgrade_url, array('timeout' => 60)); 335 336 // Remove working directory 337 $wp_filesystem->delete($from, true); 338 339 // Force refresh of update information 340 if ( function_exists('delete_site_transient') ) 341 delete_site_transient('update_core'); 342 else 343 delete_option('update_core'); 344 345 // Remove maintenance file, we're done. 346 $wp_filesystem->delete($maintenance_file); 347 } 348 349 ?>
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| Generated: Thu Oct 14 05:12:05 2010 | Cross-referenced by PHPXref 0.7 |