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Regex Editor
Tutorials and Regex Database
Tutorials and Sample Regular Expressions
Everything you need to know about writing regular expressions for PHP.
HTML
How to match anchor tags and links?
How to match colors?
How to match img tags?
How to match page title?
backend development
How to match UUIDs?
dates and times
How to match ISO8601 Date/Time?
system administration
How to match IP addresses?
How to match file extensions?
How to match youtube links?
web development
How to ensure password complexity requirements?
How to match URLs?
How to match emails?
How to match phone numbers?
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