Custom Payment Fields — a practical guide to WooCommerce payment fields with clear examples you can reuse in real projects.
WooCommerce Plugin Development Series (42/101). Prefer one article? Read the complete WooCommerce plugin development tutorial.
Short description
Render fields in the gateway form, validate on process_payment, and never log sensitive card data.
Security note
Never store raw card PANs
Use payment provider hosted fields/token when possible
PCI scope reduction first