Escaping WordPress Data — a practical guide to WordPress escaping with clear examples you can reuse in real projects.
WordPress Plugin Development Series (26/95). Prefer one article? Read the complete WordPress plugin development tutorial.
Short description
Escape late (when printing). Choose the right esc_* helper for the context.
Escape examples
echo esc_html($title);
echo '<a href="' . esc_url($link) . '">' . esc_html($label) . '</a>';
echo '<input value="' . esc_attr($value) . '">';