Regular Expression Library

Test Your Regular Expressions

New Silverlight Tester

Singleline

Case Insensitive

Multiline

Ignore Whitespace in Expression

Explicit Capture

URL

File

Source

Regular Expression
(<[^>]*?tag[^>]*?(?:identify_by)[^>]*>)((?:.*?(?:<[ \r\t]*tag[^>]*>?.*?(?:<.*?/.*?tag.*?>)?)*)*)(<[^>]*?/[^>]*?tag[^>]*?>)