wp-admin/includes/class-plugin-installer-skin.php:192Checks if the plugin can be overwritten and outputs the HTML for overwriting a plugin on upload.
bool2 hooks fire while Plugin_Installer_Skin::do_overwrite() runs, in this order:
Filters the compare table output for overwriting a plugin package on upload.
Filters the list of action links available following a single plugin installation failure when overwriting is allowed.
private function do_overwrite() { if ( 'upload' !== $this->type || ! is_wp_error( $this->result ) || 'folder_exists' !== $this->result->get_error_code() ) { return false; } $folder = $this->result->get_error_data( 'folder_exists' ); $folder = ltrim( substr( $folder, strlen( WP_PLUGIN_DIR ) ), '/' ); $current_plugin_data = false; $all_plugins = get_plugins(); foreach ( $all_plugins as $plugin => $plugin_data ) { if ( strrpos( $plugin, $folder ) !== 0 ) { continue; } $current_plugin_data = $plugin_data; } $new_plugin_data = $this->upgrader->new_plugin_data; if ( ! $current_plugin_data || ! $new_plugin_data ) { return false; } echo '<h2 class="update-from-upload-heading">' . esc_html__( 'This plugin is already installed.' ) . '</h2>'; $this->is_downgrading = version_compare( $current_plugin_data['Version'], $new_plugin_data['Version'], '>' ); $rows = array( 'Name' => __( 'Plugin name' ), 'Version' => __( 'Version' ), 'Author' => __( 'Author' ), 'RequiresWP' => __( 'Required WordPress version' ), 'RequiresPHP' => __( 'Required PHP version' ), ); $table = '<table class="update-from-upload-comparison"><tbody>'; $table .= '<tr><th></th><th>' . esc_html_x( 'Current', 'plugin' ) . '</th>'; $table .= '<th>' . esc_html_x( 'Uploaded', 'plugin' ) . '</th></tr>'; $is_same_plugin = true; // Let's consider only these rows. foreach ( $rows as $field => $label ) { $old_value = ! empty( $current_plugin_data[ $field ] ) ? (string) $current_plugin_data[ $field ] : '-'; $new_value = ! empty( $new_plugin_data[ $field ] ) ? (string) $new_plugin_data[ $field ] : '-'; $is_same_plugin = $is_same_plugin && ( $old_value === $new_value ); $diff_field = ( 'Version' !== $field && $new_value !== $old_value ); $diff_version = ( 'Version' === $field && $this->is_downgrading ); $table .= '<tr><td class="name-label">' . $label . '</td><td>' . wp_strip_all_tags( $old_value ) . '</td>'; $table .= ( $diff_field || $diff_version ) ? '<td class="warning">' : '<td>'; $table .= wp_strip_all_tags( $new_value ) . '</td></tr>'; } $table .= '</tbody></table>'; /** * Filters the compare table output for overwriting a plugin package on upload. * * @since 5.5.0 * * @param string $table The output table with Name, Version, Author, RequiresWP, and RequiresPHP info. * @param array $current_plugin_data Array with current plugin data. * @param array $new_plugin_data Array with uploaded plugin data. */ echo apply_filters( 'install_plugin_overwrite_comparison', $table, $current_plugin_data, $new_plugin_data ); $install_actions = array(); $can_update = true; $blocked_message = '<p>' . esc_html__( 'The plugin cannot be updated due to the following:' ) . '</p>'; $blocked_message .= '<ul class="ul-disc">'; $requires_php = isset( $new_plugin_data['RequiresPHP'] ) ? $new_plugin_data['RequiresPHP'] : null; $requires_wp = isset( $new_plugin_data['RequiresWP'] ) ? $new_plugin_data['RequiresWP'] : null; if ( ! is_php_version_compatible( $requires_php ) ) {Introduced in 5.5.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.
src/wp-admin/includes/class-plugin-installer-skin.php, and regenerated for each WordPress release so it tracks the code rather than a snapshot of it.