laipower/wp-content/plugins/w3-total-cache/inc/options/parts/dashboard_banner.php

<?php
namespace W3TC;

if ( ! defined( 'W3TC' ) ) {
	die();
}
?>

<div id="w3tc_dashboard_banner" class="metabox-holder">
	<div class="postbox">
		<div class="w3tc-postbox-ad">
			<?php
			echo wp_kses(
				sprintf(
					// Translators: 1 HTML line break, 2 opening HTML a tag to W3TC Support admin page, 3 closing HTML a tag.
					__(
						'Did you know that we offer premium support services?%1$s Our experts will configure W3 Total Cache for you! %2$sClick here for info%3$s.',
						'w3-total-cache'
					),
					'<br />',
					'<a href="' . esc_url( admin_url( 'admin.php?page=w3tc_support' ) ) . '">',
					'</a>'
				),
				array(
					'a'  => array(
						'href' => array(),
					),
					'br' => array(),
				)
			);
			?>
		</div>
		<h3 class="postbox-title">
			<img style="height:32px;" src="<?php echo esc_url( plugins_url( 'w3-total-cache/pub/img/W3TC_dashboard_logo_title.png' ) ); ?>" />
		</h3>
		<div class="inside">
			<p>
				<?php
				echo wp_kses(
					sprintf(
						// Translators: 1 opening HTML strong tag, 2 closing HTML strong tag.
						__(
							'You\'re using the Community Edition of W3 Total Cache. Maximize your website\'s speed even more by upgrading to %1$sW3 Total Cache Pro%2$s to unlock advanced anaytics, fragment caching, full site delivery, extension support and other tools that will allow you to completely fine tune your website\'s performance.',
							'w3-total-cache'
						),
						'<strong>',
						'</strong>'
					),
					array(
						'strong' => array(),
					)
				);
				?>
			</p>
			<p>
				<input type="button" class="button w3tc-gopro-button button-buy-plugin"	data-src="dashboard_banner"
					value="<?php esc_attr_e( 'Learn more about Pro', 'w3-total-cache' ); ?>" />
			</p>
		</div>
	</div>
</div>