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Ferramenta Testador e deputador do Regex

Ferramenta gratuita que valida a cadeia de caracteres de entrada fornecida contra a expressão regular fornecida e corresponde a saída de acordo com o Regex definido.

A ferramenta suporta análise e depuração em linguagens JavaScript, Python e PHP


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Regex Parser Flags

Following are the explanations for the flags used.

Regex Parser Flags Description
g (Global) Don't return after the first match
s (Dot All) Dot also matches newline
i (Case Insensitive) Case insensitive match, ignores case of alphabets
m (Multiline) Causes ^ and $ to match the begin/end of each line
D (Dollar) Makes the dollar sign '$', to always match the end of the string, instead of end of the line
x (Extended) Spaces in the pattern are ignored
U (Ungreedy) The match becomes lazy by default

Regex Parser Examples

Following are few example input regex and results for the sample input string

InputRegex Description Input string Result
[A-Z] Character class: Literally matches all characters given inside '[' ']' Once upon A time There was a King with Seven sons
[A-Za-z]+ Checks for one or more matches Once upon A time
([A-Z]) Capturing group: Captures the matches of pattern within '(' and ')' in separate groups Once upon A time
\w Matches any word character (similar to [a-zA-Z0-9_]) Site
([A-Z])\w+ Capture all groups starting with uppercase alphabet and match all words starting with upper case alphabet followed by word character Once