Filters a sanitized key string.

$sanitized_key string

Sanitized key.

$key string

The key prior to sanitization.

• By default, sanitize_key() function sanitize a string key, which is used as internal identifiers, into lowercase alphanumeric, dashes, and underscores characters. After sanitize_key() function has done its work, it passes the sanitized key through this sanitize_key filter.
• The filter passes $key and $raw_key as parameters, which allows the user of this filter to perform additional sanitization based on these two keys.

File: wp-includes/formatting.php. View all references

return apply_filters( 'sanitize_key', $sanitized_key, $key );