Data Sanitization and Validation — a practical guide to WooCommerce sanitize validate with clear examples you can reuse in real projects.
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Short description
Amounts, SKUs, emails, and addresses each need specific validation.
Sanitize examples
$sku = wc_clean(wp_unslash($_POST['sku'] ?? ''));
$price = wc_format_decimal(wp_unslash($_POST['price'] ?? ''));