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RegExr
Construct complex expressions, test accuracy, and learn fundamentals with a simple user interface and real-time feedback.
RegExr serves as an online tool dedicated to learning, building, and testing regular expressions with syntax highlighting and contextual help available throughout the process. It supports PHP PCRE and JavaScript along with a cheat sheet and reference section for those needing searchable community patterns. Results update in real time as users type, allowing them to validate patterns against suites of test cases and share expressions with others through various export options. The platform includes features like benchmarking and formatting regex to aid in code generation and debugging tasks.
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