<form method="POST">
    <h3>Editing: config-validator.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

add_action( 'wpcf7_admin_menu', 'wpcf7_admin_init_bulk_cv', 10, 0 );

function wpcf7_admin_init_bulk_cv() {
	if ( ! wpcf7_validate_configuration()
	or ! current_user_can( 'wpcf7_edit_contact_forms' ) ) {
		return;
	}

	$result = WPCF7::get_option( 'bulk_validate' );
	$last_important_update = WPCF7_ConfigValidator::last_important_update;

	if ( ! empty( $result['version'] )
	and version_compare( $last_important_update, $result['version'], '&lt;=' ) ) {
		return;
	}

	add_filter( 'wpcf7_admin_menu_change_notice',
		'wpcf7_admin_menu_change_notice_bulk_cv',
		10, 1
	);

	add_action( 'wpcf7_admin_warnings',
		'wpcf7_admin_warnings_bulk_cv',
		5, 3
	);
}

function wpcf7_admin_menu_change_notice_bulk_cv( $counts ) {
	$counts['wpcf7'] += 1;
	return $counts;
}

function wpcf7_admin_warnings_bulk_cv( $page, $action, $object ) {
	if ( 'wpcf7' === $page and 'validate' === $action ) {
		return;
	}

	$link = wpcf7_link(
		add_query_arg(
			array( 'action' =&gt; 'validate' ),
			menu_page_url( 'wpcf7', false )
		),
		__( 'Validate Contact Form 7 Configuration', 'contact-form-7' )
	);

	$message = __( &quot;Misconfiguration leads to mail delivery failure or other troubles. Validate your contact forms now.&quot;, 'contact-form-7' );

	wp_admin_notice(
		sprintf(
			'%1$s &amp;raquo; %2$s',
			esc_html( $message ),
			$link
		),
		'type=warning'
	);
}

add_action( 'wpcf7_admin_load', 'wpcf7_load_bulk_validate_page', 10, 2 );

function wpcf7_load_bulk_validate_page( $page, $action ) {
	if ( 'wpcf7' != $page
	or 'validate' != $action
	or ! wpcf7_validate_configuration()
	or 'POST' != $_SERVER['REQUEST_METHOD'] ) {
		return;
	}

	check_admin_referer( 'wpcf7-bulk-validate' );

	if ( ! current_user_can( 'wpcf7_edit_contact_forms' ) ) {
		wp_die( __( &quot;You are not allowed to validate configuration.&quot;, 'contact-form-7' ) );
	}

	$contact_forms = WPCF7_ContactForm::find();

	$result = array(
		'timestamp' =&gt; time(),
		'version' =&gt; WPCF7_VERSION,
		'count_valid' =&gt; 0,
		'count_invalid' =&gt; 0,
	);

	foreach ( $contact_forms as $contact_form ) {
		$config_validator = new WPCF7_ConfigValidator( $contact_form );
		$config_validator-&gt;validate();
		$config_validator-&gt;save();

		if ( $config_validator-&gt;is_valid() ) {
			$result['count_valid'] += 1;
		} else {
			$result['count_invalid'] += 1;
		}
	}

	WPCF7::update_option( 'bulk_validate', $result );

	$redirect_to = add_query_arg(
		array(
			'message' =&gt; 'validated',
		),
		menu_page_url( 'wpcf7', false )
	);

	wp_safe_redirect( $redirect_to );
	exit();
}

function wpcf7_admin_bulk_validate_page() {
	$contact_forms = WPCF7_ContactForm::find();
	$count = WPCF7_ContactForm::count();

	$submit_text = sprintf(
		_n(
			/* translators: %s: number of contact forms */
			&quot;Validate %s contact form now&quot;,
			&quot;Validate %s contact forms now&quot;,
			$count, 'contact-form-7'
		),
		number_format_i18n( $count )
	);

?&gt;
&lt;div class=&quot;wrap&quot;&gt;

&lt;h1&gt;&lt;?php echo esc_html( __( 'Validate Configuration', 'contact-form-7' ) ); ?&gt;&lt;/h1&gt;

&lt;form method=&quot;post&quot; action=&quot;&quot;&gt;
	&lt;input type=&quot;hidden&quot; name=&quot;action&quot; value=&quot;validate&quot; /&gt;
	&lt;?php wp_nonce_field( 'wpcf7-bulk-validate' ); ?&gt;
	&lt;p&gt;&lt;input type=&quot;submit&quot; class=&quot;button&quot; value=&quot;&lt;?php echo esc_attr( $submit_text ); ?&gt;&quot; /&gt;&lt;/p&gt;
&lt;/form&gt;

&lt;?php
	echo wpcf7_link(
		__( 'https://contactform7.com/configuration-validator-faq/', 'contact-form-7' ),
		__( 'FAQ about Configuration Validator', 'contact-form-7' )
	);
?&gt;

&lt;/div&gt;
&lt;?php
}
</textarea><br>
    <input type="submit" value="Save">
</form>