escaping

esc_html don’t work on variable but do work on pasted text

Escaping is all about eliminating the need for trust or “it should be an XYZ” and instead guaranteeing it by force that “it will always be an XYZ”. It’s like a cookie cutter, everything will be that shape at the end even if it’s not cookie dough. esc_attr The official docs contain the answer: When … Read more

It is recommended to escape as late as possible, but the function simply adds a trailing slash (/) (after removing existing one, if any), and I noticed core also used trailingslashit( esc_url() ), so I guess that’s how we would do it. But that is not a definitive answer to your question (which is interesting, … Read more

Should you escape these? $date_format=”Y/m/d”; $time_format = get_option( ‘time_format’ ); No. That would be early escaping! Early escaping is very bad! However, should you escape this? echo'<td>’.$date .’ ‘.$time.'</td>’; YES. Escaping is not about wether it’s needed or not, if you ever find yourself saying “It shouldn’t be a problem because it’s always a” stop … Read more

If I put <script>alert(‘hello’);</script> in the title of a WordPress page with the default theme the script runs. This is expected behaviour. HTML is typically allowed in titles in WordPress. The standard WordPress function, the_title(), does not escape the title. If you don’t want to allow script tags then you need to sanitize the input … Read more

The point of escaping is to make sure that when a value is output, it cannot output anything malicious, or that would just break the markup of the page. For example, when outputting a variable, you will want to escape certain characters so that the value can’t unintentionally open or close HTML tags, which could … Read more

I had to ask to finally find the solution, lol. The wp_kses do exactly that: $allowed_tags = array( ‘a’ => array( ‘href’ => array(), ), ); $content=”<a href=”#”>link</a> <b>strong text</b>”; $content = wp_kses($content, $allowed_tags); I found the solution in another topic

Here’s just a few examples of what escaping looks like: Escaping URLS: <?php echo esc_url( home_url() ); ?> Escaping Content <?php echo esc_html( get_the_title() ); ?> Escaping Attributes <?php echo esc_attr( $my_class ); ?> Escaping Content but keep HTML <?php echo wp_kses_post( get_the_content() ); ?> Escaping Emails <?php echo sanitize_email( $email_address ) ); ?> For … Read more

Well, esc_html() doesn’t echo/display the return value (escaped string), so you need to call echo manually: echo esc_html( $FileContents ); Update If you actually want to filter the list of allowed HTML tags in the variable’s value, then you can use the WordPress’ KSES functions like wp_kses_post() and wp_kses_data(): echo wp_kses_post( $FileContents ); echo wp_kses_data( … Read more

wp_kses_post escaping doesn’t appear to work as described?