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Regex generator with plain-English explanation

ChatGPT 8 views 0 copies Oct 3, 2026
Describe the pattern you need and get a tested regular expression, a token-by-token explanation, and examples that match and don't.

Prompt

Act as a regular expression expert.

Regex flavour: [JavaScript / Python / PHP (PCRE) / Java / .NET]
What I need to match: [describe, e.g. UK postcodes, dates in DD/MM/YYYY, URLs without query strings]
Should match:
[examples]
Should NOT match:
[examples]

Please give:
1. The regex
2. A token-by-token explanation in plain English
3. A table of test strings showing match / no match
4. Edge cases it doesn't handle
5. A code snippet showing how to use it in [language]

Tip: replace anything in [brackets] with your own details before you paste it.

#regex#regular expressions#validation#parsing
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