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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 |
|---|---|
| 200 | echo '<tr class="plugin-update-tr"><td colspan="' . $wp_list_table->get_column_count() . '" class="plugin-update colspanchange"><div class="update-message">'; |
| 201 | |
| 202 | if ( ! current_user_can('update_plugins') ) |
| 203 | printf( __('There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a>.'), $plugin_name, esc_url($details_url), esc_attr($plugin_name), $r->new_version ); |
| 204 | else if ( empty($r->package) ) |
| 205 | printf( __('There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a>. <em>Automatic update is unavailable for this plugin.</em>'), $plugin_name, esc_url($details_url), esc_attr($plugin_name), $r->new_version ); |
| 206 | else |
| 207 | printf( __('There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s details</a> or <a href="%5$s">update automatically</a>.'), $plugin_name, esc_url($details_url), esc_attr($plugin_name), $r->new_version, wp_nonce_url( self_admin_url('update.php?action=upgrade-plugin&plugin=') . $file, 'upgrade-plugin_' . $file) ); |
| 208 | |
| 209 | do_action( "in_plugin_update_message-$file", $plugin_data, $r ); |
| 210 | |
| 211 | echo '</div></td></tr>'; |
| 212 | } |
| 213 | } |
| 214 | |
| 215 | function wp_update_plugin($plugin, $feedback = '') { |
| 216 | if ( !empty($feedback) ) |
| 217 | add_filter('update_feedback', $feedback); |
| 218 | |