convert_smilies()
Converts text equivalent of smilies to images.
WordPress File wp-includes/formatting.php
ent2ncr()
Converts named entities into numbered entities.
esc_attr()
Escaping for HTML attributes.
esc_html()
Escaping for HTML blocks.
esc_js()
Escapes single quotes, ", , &, and fixes line endings.
esc_sql()
Escapes data for use in a MySQL query.
esc_textarea()
Escaping for textarea values.
esc_url()
Checks and cleans a URL.
esc_url_raw()
Performs esc_url() for database or redirect usage.
esc_xml()
Escaping for XML blocks.