sanitize_comment_cookies() │ WP 2.0.4

Clears the comment form fields name, email, and website that are in cookies.

The function takes nothing and returns nothing, but works directly with the superglobal variable $_COOKIES and clears the corresponding values in it.

Hooks from the function

Returns

null. Nothing.

Usage

sanitize_comment_cookies();

Examples

0

#1 Clearing cookie values for the comment form before displaying it on the screen

Suppose we use the function wp_get_current_commenter() to get the data of the name, mail, and site of the unauthorized user, which are in the cookies. But we will get raw data, to clear it before outputting it, we have to use sanitize_comment_cookies():

// Clean up the data
sanitize_comment_cookies();

// now data is safe to use
$commenter = wp_get_current_commenter();

// Output the data
echo $commenter['comment_author'];
echo $commenter['comment_author_email'];
echo $commenter['comment_author_url'];

Changelog

Since 2.0.4 Introduced.

sanitize_comment_cookies() code WP 6.9

wp-includes/comment.php 
function sanitize_comment_cookies() {
	if ( isset( $_COOKIE[ 'comment_author_' . COOKIEHASH ] ) ) {
		/**
		 * Filters the comment author's name cookie before it is set.
		 *
		 * When this filter hook is evaluated in wp_filter_comment(),
		 * the comment author's name string is passed.
		 *
		 * @since 1.5.0
		 *
		 * @param string $author_cookie The comment author name cookie.
		 */
		$comment_author = apply_filters( 'pre_comment_author_name', $_COOKIE[ 'comment_author_' . COOKIEHASH ] );
		$comment_author = wp_unslash( $comment_author );
		$comment_author = esc_attr( $comment_author );

		$_COOKIE[ 'comment_author_' . COOKIEHASH ] = $comment_author;
	}

	if ( isset( $_COOKIE[ 'comment_author_email_' . COOKIEHASH ] ) ) {
		/**
		 * Filters the comment author's email cookie before it is set.
		 *
		 * When this filter hook is evaluated in wp_filter_comment(),
		 * the comment author's email string is passed.
		 *
		 * @since 1.5.0
		 *
		 * @param string $author_email_cookie The comment author email cookie.
		 */
		$comment_author_email = apply_filters( 'pre_comment_author_email', $_COOKIE[ 'comment_author_email_' . COOKIEHASH ] );
		$comment_author_email = wp_unslash( $comment_author_email );
		$comment_author_email = esc_attr( $comment_author_email );

		$_COOKIE[ 'comment_author_email_' . COOKIEHASH ] = $comment_author_email;
	}

	if ( isset( $_COOKIE[ 'comment_author_url_' . COOKIEHASH ] ) ) {
		/**
		 * Filters the comment author's URL cookie before it is set.
		 *
		 * When this filter hook is evaluated in wp_filter_comment(),
		 * the comment author's URL string is passed.
		 *
		 * @since 1.5.0
		 *
		 * @param string $author_url_cookie The comment author URL cookie.
		 */
		$comment_author_url = apply_filters( 'pre_comment_author_url', $_COOKIE[ 'comment_author_url_' . COOKIEHASH ] );
		$comment_author_url = wp_unslash( $comment_author_url );

		$_COOKIE[ 'comment_author_url_' . COOKIEHASH ] = $comment_author_url;
	}
}

comment_cookies

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