lyblog/wp-content/plugins/wordpress-seo/admin/views/tabs/tool/import-seo.php

<?php
/**
 * WPSEO plugin file.
 *
 * @package WPSEO\Admin\Views
 */

if ( ! defined( 'WPSEO_VERSION' ) ) {
	header( 'Status: 403 Forbidden' );
	header( 'HTTP/1.1 403 Forbidden' );
	exit();
}

// Determine if we have plugins we can import from. If so, load that tab. Otherwise, load an empty tab.
$import_check = new WPSEO_Import_Plugins_Detector();
$import_check->detect();
if ( count( $import_check->needs_import ) === 0 ) {
	echo '<h2>', esc_html__( 'Import from other SEO plugins', 'wordpress-seo' ), '</h2>';
	echo '<p>';
	printf(
		/* translators: %s expands to Yoast SEO */
		esc_html__( '%s did not detect any plugin data from plugins it can import from.', 'wordpress-seo' ),
		'Yoast SEO'
	);
	echo '</p>';

	return;
}

/**
 * Creates a select box given a name and plugins array.
 *
 * @param string $name    Name field for the select field.
 * @param array  $plugins An array of plugins and classes.
 *
 * @return void
 */
function wpseo_import_external_select( $name, $plugins ) {
	esc_html_e( 'Plugin: ', 'wordpress-seo' );
	echo '<select name="', esc_attr( $name ), '">';
	foreach ( $plugins as $class => $plugin ) {
		/* translators: %s is replaced with the name of the plugin we're importing from. */
		echo '<option value="' . esc_attr( $class ) . '">' . esc_html( $plugin ) . '</option>';
	}
	echo '</select>';
}

?>
<h2><?php esc_html_e( 'Import from other SEO plugins', 'wordpress-seo' ); ?></h2>
<p>
	<?php esc_html_e( 'We\'ve detected data from one or more SEO plugins on your site. Please follow the following steps to import that data:', 'wordpress-seo' ); ?>
</p>

<div class="tab-block">
	<h3><?php esc_html_e( 'Step 1: Create a backup', 'wordpress-seo' ); ?></h3>
	<p>
		<?php esc_html_e( 'Please make a backup of your database before starting this process.', 'wordpress-seo' ); ?>
	</p>
</div>

<div class="tab-block">
	<h3><?php esc_html_e( 'Step 2: Import', 'wordpress-seo' ); ?></h3>
	<p>
		<?php
		printf(
			/* translators: 1: expands to Yoast SEO */
			esc_html__( 'This will import the post metadata like SEO titles and descriptions into your %1$s metadata. It will only do this when there is no existing %1$s metadata yet. The original data will remain in place.', 'wordpress-seo' ),
			'Yoast SEO'
		);
		?>
	</p>
	<form action="<?php echo esc_url( admin_url( 'admin.php?page=wpseo_tools&tool=import-export#top#import-seo' ) ); ?>"
		method="post" accept-charset="<?php echo esc_attr( get_bloginfo( 'charset' ) ); ?>">
		<?php
		wp_nonce_field( 'wpseo-import-plugins', '_wpnonce', true, true );
		wpseo_import_external_select( 'import_external_plugin', $import_check->needs_import );
		?>
		<?php
		do_action( 'wpseo_import_other_plugins' );
		?>
		<input type="submit" class="button button-primary" name="import_external"
			value="<?php esc_attr_e( 'Import', 'wordpress-seo' ); ?>"/>
	</form>
</div>

<div class="tab-block">
	<h3><?php esc_html_e( 'Step 3: Check your data', 'wordpress-seo' ); ?></h3>
	<p>
		<?php esc_html_e( 'Please check your posts and pages and see if the metadata was successfully imported.', 'wordpress-seo' ); ?>
	</p>
</div>

<div class="tab-block">
	<h3><?php esc_html_e( 'Step 4: Run the configuration wizard', 'wordpress-seo' ); ?></h3>
	<p>
		<?php
		printf(
			esc_html__( 'You should run the configuration wizard, from the SEO &rarr; General &rarr; Dashboard page, to make sure all the settings for your site are correct.', 'wordpress-seo' ),
			'<a href="' . esc_url( admin_url( 'admin.php?page=wpseo_dashboard' ) ) . '">',
			'</a>'
		);
		?>
	</p>
</div>

<div class="tab-block">
	<h3><?php esc_html_e( 'Step 5: Clean up', 'wordpress-seo' ); ?></h3>
	<p>
		<?php esc_html_e( 'Once you\'re certain your site is OK, you can clean up. This will remove all the original data.', 'wordpress-seo' ); ?>
	</p>
	<form action="<?php echo esc_url( admin_url( 'admin.php?page=wpseo_tools&tool=import-export#top#import-seo' ) ); ?>"
		method="post" accept-charset="<?php echo esc_attr( get_bloginfo( 'charset' ) ); ?>">
		<?php
		wp_nonce_field( 'wpseo-clean-plugins', '_wpnonce', true, true );
		wpseo_import_external_select( 'clean_external_plugin', $import_check->needs_import );
		?>
		<input type="submit" class="button button-primary" name="clean_external"
			value="<?php esc_attr_e( 'Clean', 'wordpress-seo' ); ?>"/>
	</form>
</div>