Regular expression tester with syntax highlighting, PHP / PCRE & JS Support, contextual help, cheat sheet, reference, and searchable community patterns.
If you're running an ad blocker, consider whitelisting regex101 to support the website.Read more. Explanation An explanation of your regex will be automatically generated as you type. Match Information Detailed match information will be displayed here automatically. ...
Testing regexes Rapidly develop your syntax by testing on a regex utility website, before using it in a pipeline. The siteregex101.comallows you to enter a regex, then test it against a few sample values. The siteJava Regular Expressions Testeralso allows you to test a regex, including the...
↵ ⁃test↵ ↵ ↵ 20:1 Substitution Processing... testing↵ ↵ -test1↵ ↵ -test3↵ ↵ ⁃test4↵ ↵ •testing↵ ↵ ◦test2↵ ↵ ⁃tester↵ ↵ -retest↵ ↵ ⁃test↵ ↵ ↵ 1:1 \n
Why is Testing Regex Crucial? Regular Expressions, or Regex, is a potent tool when navigating the programming world. But with its power comes complexity, and therein lies the need for rigorous testing. Let’s delve into the reasons.
Regular expression (regex/regexp) testing and debugging for Your Browser, Bun, Deno, Go, Java, .NET, Node.js, Perl, PHP, PostgreSQL, Python, Ruby, Rust, Swift, tcl, XRegExp.
Sampletextfortesting: abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789+-.,!@#$%^&*();\\/|<>\"\' 12345-98.73.141.61809,000+42 555.123.4567+1-(800)-555-2468 foo@demo.netbar.ba@test.co.uk www.demo.comhttp://foo.co.uk/ ...
URL SOURCE: FILE SOURCE: MATCH PATTERN: REPLACE PATTERN: OPERATION: i x m s SHOW MATCH ARRAY: EXPLAIN: PHP ASP VB.NET C#.NET Java JS DELIM: HIGHLIGHT MATCHES: GEN SAMPLES: Save example SOURCE TEXT:
1 My test data Unit Tests(hide)HelpYou haven't added any unit tests yet No unit tests added. Library(hide)Help Quoted String Natural Number C-Style Variable Name Whole Number Integer SSN ISBN-13 ISBN-10 Hex Digit Block of up to 4 Hex Digits ...
As balazs_hideghety said in his comment, there are other popular, and great programs like RegEx buddy or Expresso that are extremely powerful and seem to be the last word on RegEx development and testing, but I still use this tool. Why? I needed a tool that helped me design HTML Extract...