Hello I need to exclude sequence of digits from 890000 till 890001;
890002 to 899999 is acceptable
Is it possible doing using regular expression?
No need for regex.
If Value >= 890002 And Value <= 899999 Then
' Accept
End If
Ok, if you insist on using regex (may be for learning purpose):
In this simple case it is actually easier to exclude those two number and match the rest:
^89(?!000[12])\d{4}$
Explanation:
^ match from start of text
89match 89
(?!000[12]) negative look ahead for 3 times zero and one of characters in the character group (1 or 2). If this doesn't block the match:
\d{4} match 4 digits
$ match end of text.
Related
I am trying to create a basic regular expression to match a phone number which can either use dots [.] or hyphens [-] as the separator.
The format is 123.456.7890 or 123-456-7890.
The expression I am currently using is:
\d\d\d[-.]\d\d\d[-.]\d\d\d\d
The issue here is that it also matches the phone numbers that have both separators in them which I want to be termed as invalid/not a match. For example, with my expression, 123.456-7890 and 123-456.7890 show up as a match, something I do not want happening.
Is there a way to do that?
Use a backreference:
^\d{3}([.-])\d{3}\1\d{4}$
Here is an explanation of the regex:
^ from the start of the number
\d{3} match any 3 digits
([.-]) then match AND capture either a dot or a dash separator
\d{3} match any 3 digits
\1 match the SAME separator seen earlier
\d{4} match any 4 digits
$ end of the number
You can use this regex:
^\d{3}([-.])\d{3}\1\d{4}$
You can see that it works here.
Key point here - is that you capture your desired character using brackets ([-.])
and then reuse it with back reference \1.
I have been trying to use regular expression to extract data from the following strings
LTE_LTE_FSD9167__P_Airport1
I want to extract the 7 digit sitecode(FSD9167) from the above string.
RUR1251__S_KhooNaiWala
I want to extract 7 digit sitecode(RUR1251) from above string.
For LTE_LTE case I wrote LTE_LTE_([^_;]+).* but it selects the whole string including not the required text only.
The pattern I see is three letters followed by four numbers, so:
\w{3}\d{4}
Use () to capture the pattern:
(\w{3}\d{4})
PHP:
$re = '/(\w{3}\d{4})/m';
JavaScript:
const regex = /(\w{3}\d{4})/gm;
Use https://regex101.com/ to learn the explanation.
You can use something like this:
^(?:LTE_LTE_)?(\S{7})\S*$ /gm
This captures the seven non-whitespace characters either at the beginning (case 2) or just after LTE_LTE_
Demo
You did not provide any rule about how the code could look like. I noticed that both codes you provided in the example have 3 letters followed by 4 digits. I made a rule more generic, with at least 2 letters followed by at least 3 digits.
The regex is:
[a-zA-Z]{2,}\d{3,}
Test here.
As you want to match only these 2 strings, use:
(?<![A-Z0-9])[A-Z0-9]{7}(?![A-Z0-9])
Explanation:
(?<![A-Z0-9]) # negative lookbehind, make sure we haven't alphanum before
[A-Z0-9]{7} # 7 alphanumerics
(?![A-Z0-9]) # negative lookahead, make sure we haven't alphanum after
Demo
I am trying to merge below four pattern into single pattern using pipe(|), but not getting the required result.
Scenario:
max 7 entry(alphabet and digits)
should contain 4 and only 4 consecutive digits(mandatory)
Patterns:
([\d]{4}[a-zA-Z]{0,3})
[a-zA-Z]{0,1}[\d]{4}[a-zA-Z]{0,2}
[a-zA-Z]{0,2}[\d]{4}[a-zA-Z]{0,1}
[a-zA-Z]{0,3}[\d]{4})
You can use
^(?=[a-zA-Z\d]{4,7}$)[a-zA-Z]*\d{4}[a-zA-Z]*$
See the regex demo
If you are using the regex pattern in a method that anchors the pattern by default, the ^ and/or $ might be redundant, but will still work.
The regex breakdown:
^ - start of string
(?=[a-zA-Z\d]{4,7}$) - the positive lookahead requiring the string to only consist of 4 to 7 letters or digits
[a-zA-Z]*\d{4}[a-zA-Z]* - the string should contain 4 digits (\d{4}`) that can be preceded or followed with zero or more letters
$ - end of string.
Using this for an example string
+$43073$7
and need the 5 number sequence from it I'm using the Regex expression
#"\$+(?<lot>\d{5})"
which is matching up any +$ in the string. I tried
#"^\$+(?<lot>\d{5})"
as the +$ are always at the beginning of the string. What will work?
If you use anchor ^, you need to include the + symbol at the first and don't forget to escape it because + is a special meta character in regex which repeats the previous token one or more times.
#"^\+\$(?<lot>\d{5})"
And without the anchor, it would be like
#"\$(?<lot>\d{5})"
And get the 5 digit number you want from group index 1.
DEMO
I would match what you want:
\d+
or if you only want digits after "special" characters at the start of input:
^\W+(\d+)
grabbing group 1
I figured out a regular expresion for my country's phone but I've something missing.
The rule here is: (Area Code) Prefix - Sufix
Area Code could be 3 to 5 digits
Prefix could be 2 to 4 digits.
Area Code + Prefix is 7 digits long.
Sufix is always 4 digits long
Total digits are 11.
I figured I could have 3 simple regex chained with an OR "|" like this:
/(\(?\d{3}\)?[- .]?\d{4}[- .]?\d\d\d\d)|(\(?\d{4}\)?[- .]?\d{3}[- .]?\d\d\d\d)|(\(?\d{5}\)?[- .]?\d{2}[- .]?\d\d\d\d)/
The thing I'm doing wrong is that \d\d\d\d doesn't match only 4 digits for the sufix, for example: (011) 4740-5000 which is a valid phone number, works ok but if put extra digits it will also return as a valid phone number, ie: (011) 4740-5000000000
You should use ^ and $ to match whole string
For example ^\d{4}$ will match exactly 4 digits not more not less.
Here is the complete regex pattern
^((\(?\d{3}\)? \d{4})|(\(?\d{4}\)? \d{3})|(\(?\d{5}\)? \d{2}))-\d{4}$
Online demo
As per your regex pattern delimiter can be -,. or single space then try
^((\(?\d{3}\)?[-. ]?\d{4})|(\(?\d{4}\)?[-. ]?\d{3})|(\(?\d{5}\)?[-. ]?\d{2}))[-. ]?\d{4}$
This pattern works fine for me:
/^\\(?(\d{3,5})?\\)?\s?(15)?[\s|-]?(4)\d{2,3}[\s|-]?\d{4}$/
I've tested this in regex101:
/^((?:\(?\d{3}\)?[- .]?\d{4}|\(?\d{4}\)?[- .]?\d{3}|\(?\d{5}\)?[- .]?\d{2})[- .]?\d{4})$/
RegEx Demo
^ Matches the beginning of a string
( Beginning of capture group
(?: Beginning of non-capturing group
Your different options for area code & prefix
) End non-capturing group
[- .]?\d{4} The last four digits of the phone number
) End capture group
$ Matches the end of a string
If you're trying to validate such a phone number, then the following one should suit your needs:
^(?=.{15}$)[(]\d{3,5}[)] \d{2,4}-\d{4}$
Debuggex Demo
You need to match the complete expression by indicating the start and end with anchors. You also don't need alternation for the different lengths.
/^(?=(\D*\d){11}$)\(?\d{3,5}\)?[- .]?\d{2,4}[- .]?\d{4}$/
Here's the breakdown:
(?=(\D*\d){11}$) is a non-capturing group ensuring that there are 11 digits total,
with any number of non-digits amongst them
\(?\d{3,5}\)?[- .]? matches 3-5 digits in parens (area code), followed by a separator
\d{2,4}[- .]? matches 2-4 digits (prefix), followed by a separator
\d{4} matches the suffix