Regex Editor & Tester

Matches the literal text 'ion>' followed by exactly three digits and a '<' character, such as 'ion>123<'. This is typically used to extract three-digit values (like version, edition, or revision numbers) from XML/HTML elements whose tag names end in 'ion', e.g. <version>123</version>. The g flag finds all occurrences, while m, s, and x enable multiline, dotall, and extended matching modes.