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Teste suas expressões regulares (Regex) com nossa ferramenta online gratuita. Obtenha resultados instantâneos com explicações úteis e dicas para um melhor entendimento.
Teste suas expressões regulares (Regex) com nossa ferramenta online gratuita. Obtenha resultados instantâneos com explicações úteis e dicas para um melhor entendimento.
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A Regex Tester lets you build and test regular expressions against sample text with match highlighting.
Enter a regex pattern and test string. Matches are highlighted and capture groups are shown.
A Regex Tester is a tool designed to help developers and users test Regular Expressions (regex) against a sample string of text. It highlights matches, captures groups, and helps debug complex patterns in real-time.
Flags modify how the search is performed. Common flags include 'g' (global search for all matches), 'i' (case-insensitive search), and 'm' (multiline mode, where ^ and $ match start/end of lines).
In regex, certain characters like ., *, ?, +, ^, $, etc., have special meanings. If you want to match the literal character itself (e.g., a period), you must 'escape' it with a backslash (e.g., \.)
You can use parentheses () to create capturing groups. The text matched inside the parentheses is stored separately and can be referenced later (e.g., as $1 or \1) or extracted individually.
The 'g' flag stands for 'global'. Without it, the engine only returns the first match found in the string. With it, the engine continues searching the rest of the string to find all possible matches.
Quantifiers like * and + are 'greedy' by default, meaning they match as much text as possible. To make them match as little as possible (lazy), append a question mark, e.g., change .* to .*?
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