installed plugin W3 Total Cache version 2.3.2

wp-content/plugins/w3-total-cache/Extension_Amp_Page_View.php

@@ -0,0 +1,41 @@
+<?php
+namespace W3TC;
+
+if ( ! defined( 'W3TC' ) ) {
+	die();
+}
+?>
+<form action="admin.php?page=w3tc_extensions&amp;extension=amp&amp;action=view" method="post">
+<div class="metabox-holder">
+	<?php Util_Ui::postbox_header( esc_html__( 'Configuration', 'w3-total-cache' ), '', '' ); ?>
+	<table class="form-table">
+		<?php
+		Util_Ui::config_item(
+			array(
+				'key'               => array( 'amp', 'url_type' ),
+				'label'             => esc_html__( 'AMP URL Type:', 'w3-total-cache' ),
+				'control'           => 'radiogroup',
+				'radiogroup_values' => array(
+					'tag'         => 'tag',
+					'querystring' => 'query string',
+				),
+				'description'       => esc_html__(
+					'If AMP page URLs are tag based (/my-page/amp/) or query string based (/my-page?amp)',
+					'w3-total-cache'
+				),
+			)
+		);
+		Util_Ui::config_item(
+			array(
+				'key'         => array( 'amp', 'url_postfix' ),
+				'label'       => esc_html__( 'AMP URL Postfix:', 'w3-total-cache' ),
+				'control'     => 'textbox',
+				'description' => 'Postfix used',
+			)
+		);
+		?>
+	</table>
+	<?php Util_Ui::button_config_save( 'extension_amp_configuration' ); ?>
+	<?php Util_Ui::postbox_footer(); ?>
+</div>
+</form>