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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 182 | list( $normalized_version ) = explode( '-', $wp_version ); |
| 183 | echo '<p>' . sprintf( __( '<a href="%s">Learn more about WordPress %s</a>.' ), esc_url( admin_url( 'about.php' ) ), $normalized_version ) . '</p>'; |
| 184 | } |
| 185 | dismissed_updates(); |
| 186 | |
| 187 | if ( current_user_can( 'update_plugins' ) ) |
| 188 | list_plugin_updates(); |
| 189 | if ( current_user_can( 'update_themes' ) ) |
| 190 | list_theme_updates(); |
| 191 | do_action('core_upgrade_preamble'); |
| 192 | echo '</div>'; |
| 193 | } |
| 194 | |
| 195 | function list_plugin_updates() { |
| 196 | global $wp_version; |
| 197 | |
| 198 | $cur_wp_version = preg_replace('/-.*$/', '', $wp_version); |
| 199 | |
| 200 | require_once(ABSPATH . 'wp-admin/includes/plugin-install.php'); |