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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 |
|---|---|
| 184 | |
| 185 | echo '<tr class="plugin-update-tr"><td colspan="3" class="plugin-update"><div class="update-message">'; |
| 186 | if ( ! current_user_can('update_plugins') ) |
| 187 | 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), $r->new_version ); |
| 188 | else if ( empty($r->package) ) |
| 189 | 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 upgrade unavailable for this plugin</em>.'), $plugin_name, esc_url($details_url), esc_attr($plugin_name), $r->new_version ); |
| 190 | else |
| 191 | printf( __('There is a new version of %1$s available. <a href="%2$s" class="thickbox" title="%3$s">View version %4$s Details</a> or <a href="%5$s">upgrade automatically</a>.'), $plugin_name, esc_url($details_url), esc_attr($plugin_name), $r->new_version, wp_nonce_url('update.php?action=upgrade-plugin&plugin=' . $file, 'upgrade-plugin_' . $file) ); |
| 192 | |
| 193 | do_action( "in_plugin_update_message-$file", $plugin_data, $r ); |
| 194 | |
| 195 | echo '</div></td></tr>'; |
| 196 | } |
| 197 | |
| 198 | function wp_update_plugin($plugin, $feedback = '') { |
| 199 | |
| 200 | if ( !empty($feedback) ) |
| 201 | add_filter('update_feedback', $feedback); |
| 202 | |