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Valid Base64 string
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Expression |
(([A-Za-z0-9+/]{4})*([A-Za-z0-9+/]{3}=|[A-Za-z0-9+/]{2}==)?){1}
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Description |
The expression evaluates a Base64 string as a sequence of 4-byte blocks with a possible tail of 2 or 3-byte block with valid padding.
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Matches |
AAAAAA==
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Non-Matches |
AAAAAA
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Vassilis Petroulias
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HTML encoded characters as dec or hex values
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Expression |
&#([0-9]{1,5}|x[0-9a-fA-F]{1,4});
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Description |
Find all html encoded characters as dec &#[0-9]{1,5}; or hex &#x[0-9a-fA-F]{1,4}; values. Remember to remove "amp;" which is used for making this post possible.
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Matches |
  |  
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Non-Matches |
 
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Vassilis Petroulias
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US and Canada Phone numbers (all variations)
|
Expression |
((\+?1)(\ \.-)?)?\([2-9][0-9]{2}|\([2-9][0-9]{2}\))(\ \.-)?[0-9]{3}(\ \.-)?[0-9]{4}
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Description |
US and Canada phones in any usual variation (area code in parenthesis, spaces or dots) including the international notation +1
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Matches |
+1 212 555 6666 | (212) 555 6666 | 212-555-666 | 212 5556666
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Non-Matches |
212 555 666
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Vassilis Petroulias
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Month names (english)
|
Expression |
(Jan(uary)?|Feb(ruary)?|Mar(ch)?|Apr(il)?|May|Jun(e)?|Jul(y)?|Aug(ust)?|Sep(tember)?|Oct(ober)?|(Nov|Dec)(ember)?)
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Description |
The expression matches any month name (english) in short or full style. Use it with case insensitive mode in your date matching expressions.
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Matches |
Jan | April
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Non-Matches |
Febr
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Vassilis Petroulias
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Weekday names (english)
|
Expression |
(Mo(n(day)?)?|Tu(e(sday)?)?|We(d(nesday)?)?|Th(u(rsday)?)?|Fr(i(day)?)?|Sa(t(urday)?)?|Su(n(day)?)?)
|
Description |
The expression matches any weekday name (english) in short (2 or 3 characters) or full style. Use it with case insensitive mode in your date matching expressions.
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Matches |
Mo | Sun
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Non-Matches |
Any
|
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Vassilis Petroulias
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US (5 or 9 digits) Zip Codes with grouping
|
Expression |
(?<group5>[0-9]{5})-?(?<group4>[0-9]{4})?
|
Description |
Match 5-digit or 9-digit US zip codes with grouped results. Remember to replace < with open tag char and > with close tag char
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Matches |
12345 | 12345-6789 | 123456789
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Non-Matches |
12345 6789
|
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Vassilis Petroulias
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